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Organic farming
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Organic farming, also known as organic agriculture or ecological farming or biological farming,[1][2][3][4][5] is an agricultural system that emphasizes the use of naturally occurring, non-synthetic inputs, such as compost manure, green manure, and bone meal and places emphasis on techniques such as crop rotation, companion planting, and mixed cropping. Biological pest control methods such as the fostering of insect predators are also encouraged.[6] Organic agriculture can be defined as "an integrated farming system that strives for sustainability, the enhancement of soil fertility and biological diversity while, with rare exceptions, prohibiting synthetic pesticides, antibiotics, synthetic fertilizers, genetically modified organisms, and growth hormones".[7][8][9][10] It originated early in the 20th century in reaction to rapidly changing farming practices. Certified organic agriculture accounted for 70 million hectares (170 million acres) globally in 2019, with over half of that total in Australia.[11]
Organic standards are designed to allow the use of naturally occurring substances while prohibiting or severely limiting synthetic substances.[12] For instance, naturally occurring pesticides, such as garlic extract, bicarbonate of soda, or pyrethrin (which is found naturally in the Chrysanthemum flower), are permitted, while synthetic fertilizers and pesticides, such as glyphosate, are prohibited. Synthetic substances that are allowed only in exceptional circumstances may include copper sulfate, elemental sulfur, and veterinary drugs. Genetically modified organisms, nanomaterials, human sewage sludge, plant growth regulators, hormones, and antibiotic use in livestock husbandry are prohibited.[13][14] Broadly, organic agriculture is based on the principles of health, care for all living beings and the environment, ecology, and fairness.[15] Organic methods champion sustainability,[16][17] self-sufficiency, autonomy and independence,[17] health, animal welfare, food security, and food safety.[18] It is often seen as part of the solution to the impacts of climate change.[19]
Organic agricultural methods are internationally regulated and legally enforced by transnational organizations such as the European Union and also by individual nations, based in large part on the standards set by the International Federation of Organic Agriculture Movements (IFOAM),[20] an international umbrella organization for organic farming organizations established in 1972, with regional branches such as IFOAM Organics Europe[21] and IFOAM Asia.[22] Since 1990, the market for organic food and other products has grown rapidly, reaching $150 billion worldwide in 2022 – of which more than $64 billion was earned in North America and EUR 53 billion in Europe.[23] This demand has driven a similar increase in organically managed farmland, which grew by 26.6 percent from 2021 to 2022.[24] As of 2022, organic farming is practiced in 188 countries and approximately 96,000,000 hectares (240,000,000 acres) worldwide were farmed organically by 4.5 million farmers, representing approximately 2 percent of total world farmland.[25]
Organic farming can be beneficial on biodiversity and environmental protection at local level; however, because organic farming can produce lower yields compared to intensive farming, leading to increased pressure to convert more non-agricultural land to agricultural use in order to produce similar yields, it can cause loss of biodiversity and negative climate effects.[26][27][28]
History
[edit]Agriculture was practiced for thousands of years without the use of artificial chemicals. Artificial fertilizers were first developed during the mid-19th century. These early fertilizers were cheap, powerful, and easy to transport in bulk. Similar advances occurred in chemical pesticides in the 1940s, leading to the decade being referred to as the "pesticide era".[29] These new agricultural techniques, while beneficial in the short-term, had serious longer-term side-effects, such as soil compaction, erosion, and declines in overall soil fertility, along with health concerns about toxic chemicals entering the food supply.[30]: 10 In the late 1800s and early 1900s, soil biology scientists began to seek ways to remedy these side effects while still maintaining higher production.
In 1921 the founder and pioneer of the organic movement, Albert Howard, and his wife Gabrielle Howard[31][32][33] accomplished botanists, founded an Institute of Plant Industry to improve traditional farming methods in India. Among other things, they brought improved implements and improved animal husbandry methods from their scientific training; then by incorporating aspects of Indian traditional methods, developed protocols for the rotation of crops, erosion prevention techniques, and the systematic use of composts and manures.[34] Stimulated by these experiences of traditional farming, when Albert Howard returned to Britain in the early 1930s[35] he began to promulgate a system of organic agriculture.[36][37][38]
In 1924 Rudolf Steiner gave a series of eight lectures on agriculture with a focus on influences of the moon, planets, non-physical beings and elemental forces.[39][40] They were held in response to a request by adherent farmers who noticed degraded soil conditions and a deterioration in the health and quality of crops and livestock resulting from the use of chemical fertilizers.[41] The lectures were published in November 1924; the first English translation appeared in 1928 as The Agriculture Course.[42]
In July 1939, Ehrenfried Pfeiffer, the author of the standard work on biodynamic agriculture (Bio-Dynamic Farming and Gardening),[43] came to the UK at the invitation of Walter James, 4th Baron Northbourne as a presenter at the Betteshanger Summer School and Conference on Biodynamic Farming at Northbourne's farm in Kent.[44] One of the chief purposes of the conference was to bring together the proponents of various approaches to organic agriculture in order that they might cooperate within a larger movement. Howard attended the conference, where he met Pfeiffer.[45] In the following year, Northbourne published his manifesto of organic farming, Look to the Land, in which he coined the term "organic farming". The Betteshanger conference has been described as the 'missing link' between biodynamic agriculture and other forms of organic farming.[44]
In 1940, Howard published his An Agricultural Testament. In this book he adopted Northbourne's terminology of "organic farming".[46] Howard's work spread widely, and he became known as the "father of organic farming" for his work in applying scientific knowledge and principles to various traditional and natural methods.[30]: 45 In the United States J. I. Rodale, who was keenly interested both in Howard's ideas and in biodynamics,[33] founded in the 1940s both a working organic farm for trials and experimentation, The Rodale Institute, and Rodale, Inc., in Emmaus, Pennsylvania, to teach and advocate organic methods to the wider public. These became important influences on the spread of organic agriculture. Further work was done by Lady Eve Balfour (the Haughley Experiment) in the United Kingdom, and many other places across the world.
The term "eco-agriculture" was coined in 1970 by Charles Walters, founder of Acres Magazine, to describe agriculture which does not use "man-made molecules of toxic rescue chemistry", effectively another name for organic agriculture.[47]
Increasing environmental awareness in the general population in modern times has transformed the originally supply-driven organic movement to a demand-driven one. Premium prices and some government subsidies attracted farmers. In the developing world, many producers farm according to traditional methods that are comparable to organic farming, but not certified, and that may not include the latest scientific advancements in organic agriculture. In other cases, farmers in the developing world have converted to modern organic methods for economic reasons.[48]
Terminology
[edit]The term "organic," as popularized by Howard and Rodale, specifically pertains to the utilization of Soil organic matter from plant compost and animal manures to enhance soil humus content, based on the research of early soil scientists who pioneered the concept of "humus farming." Since the early 1940s, the two factions have increasingly converged.[49][50]
Biodynamic agriculturists, on the other hand, used the term "organic" to indicate that a farm should be viewed as a living organism,[38]: 17–19 [44] in the sense of the following quotation:
An organic farm, properly speaking, is not one that uses certain methods and substances and avoids others; it is a farm whose structure is formed in imitation of the structure of a natural system that has the integrity, the independence and the benign dependence of an organism
— Wendell Berry, "The Gift of Good Land"
They based their work on Steiner's spiritually-oriented alternative biodynamic agriculture which includes various esoteric concepts.
Methods
[edit]

"Organic agriculture is a production system that sustains the health of soils, ecosystems and people. It relies on ecological processes, biodiversity and cycles adapted to local conditions, rather than the use of inputs with adverse effects. Organic agriculture combines tradition, innovation and science to benefit the shared environment and promote fair relationships and a good quality of life for all involved..."
Organic farming methods combine scientific knowledge of ecology and some modern technology with traditional farming practices based on naturally occurring biological processes. Organic farming methods are studied in the field of agroecology. While conventional agriculture uses synthetic pesticides and water-soluble synthetically purified fertilizers, organic farmers are restricted by regulations to using natural pesticides and fertilizers. An example of a natural pesticide is pyrethrin, which is found naturally in the Chrysanthemum flower. The principal methods of organic farming include crop rotation, green manures and compost, biological pest control, and mechanical cultivation. These measures use the natural environment to enhance agricultural productivity: legumes are planted to fix nitrogen into the soil, natural insect predators are encouraged, crops are rotated to confuse pests and renew soil, and natural materials such as potassium bicarbonate[52] and mulches are used to control disease and weeds. Genetically modified seeds and animals are excluded.
While organic is fundamentally different from conventional because of the use of carbon-based fertilizers compared with highly soluble synthetic based fertilizers and biological pest control instead of synthetic pesticides, organic farming and large-scale conventional farming are not entirely mutually exclusive. Many of the methods developed for organic agriculture have been borrowed by more conventional agriculture. For example, Integrated Pest Management is a multifaceted strategy that uses various organic methods of pest control whenever possible, but in conventional farming could include synthetic pesticides only as a last resort.[53] Examples of beneficial insects that are used in organic farming include ladybugs and lacewings, both of which feed on aphids. The use of IPM lowers the possibility of pest developing resistance to pesticides that are applied to crops.
Crop diversity
[edit]Organic farming encourages crop diversity by promoting polyculture (multiple crops in the same space). Planting a variety of vegetable crops supports a wider range of beneficial insects, soil microorganisms, and other factors that add up to overall farm health. Crop diversity helps the environment to thrive and protects species from going extinct.[54][55] The science of Agroecology has revealed the benefits of polyculture, which is often employed in organic farming. Agroecology is a scientific discipline that uses ecological theory to study, design, manage, and evaluate agricultural systems that are productive and resource-conserving, and that are also culturally sensitive, socially just, and economically viable.[56]
Incorporating crop diversity into organic farming practices can have several benefits. For instance, it can help to increase soil fertility by promoting the growth of beneficial soil microorganisms. It can also help to reduce pest and disease pressure by creating a more diverse and resilient agroecosystem.[57] Furthermore, crop diversity can help to improve the nutritional quality of food by providing a wider range of essential nutrients.[58]
Soil management
[edit]Organic farming relies more heavily on the natural breakdown of organic matter than the average conventional farm, using techniques like green manure and composting, to replace nutrients taken from the soil by previous crops. This biological process, driven by microorganisms such as mycorrhiza and earthworms, releases nutrients available to plants throughout the growing season. Farmers use a variety of methods to improve soil fertility, including crop rotation, cover cropping, reduced tillage, and application of compost. By reducing fuel-intensive tillage, less soil organic matter is lost to the atmosphere. This has an added benefit of carbon sequestration, which reduces greenhouse gases and helps reverse climate change. Reducing tillage may also improve soil structure and reduce the potential for soil erosion.
Plants need a large number of nutrients in various quantities to flourish. Supplying enough nitrogen and particularly synchronization, so that plants get enough nitrogen at the time when they need it most, is a challenge for organic farmers.[59] Crop rotation and green manure ("cover crops") help to provide nitrogen through legumes (more precisely, the family Fabaceae), which fix nitrogen from the atmosphere through symbiosis with rhizobial bacteria. Intercropping, which is sometimes used for insect and disease control, can also increase soil nutrients, but the competition between the legume and the crop can be problematic and wider spacing between crop rows is required. Crop residues can be ploughed back into the soil, and different plants leave different amounts of nitrogen, potentially aiding synchronization.[59] Organic farmers also use animal manure and certain processed fertilizers, such as seed meal and various mineral powders such as rock phosphate and green sand, a naturally occurring form of potash that provides potassium. In some cases, pH may need to be amended. Natural pH amendments include lime and sulfur, but in the U.S. some compounds, such as iron sulfate, aluminum sulfate, magnesium sulfate, and soluble boron products are allowed in organic farming.[60]: 43
Mixed farms with both livestock and crops can operate as ley farms, whereby the land gathers fertility through growing nitrogen-fixing forage grasses, such as white clover or alfalfa, and grows cash crops or cereals when fertility is established. Farms without livestock ("stockless") may find it more difficult to maintain soil fertility and may rely more on external inputs, such as imported manure, as well as grain legumes and green manures, although grain legumes may fix limited nitrogen because they are harvested. Horticultural farms that grow fruits and vegetables in protected conditions often rely even more on external inputs.[59] Manure is very bulky and is often not cost-effective to transport more than a short distance from the source. Manure for organic farms may become scarce if a sizable number of farms become organically managed.
Weed management
[edit]Organic weed management promotes weed suppression, rather than weed elimination, by enhancing crop competition and phytotoxic effects on weeds.[61] Organic farmers integrate cultural, biological, mechanical, physical and chemical tactics to manage weeds without synthetic herbicides.
Organic standards require rotation of annual crops,[62] meaning that a single crop cannot be grown in the same location without a different, intervening crop. Organic crop rotations frequently include weed-suppressive cover crops and crops with dissimilar life cycles to discourage weeds associated with a particular person.[61] Research is ongoing to develop organic methods to promote the growth of natural microorganisms that suppress the growth or germination of common weeds.[63]
Other cultural practices used to enhance crop competitiveness and reduce weed pressure include selection of competitive crop varieties, high-density planting, tight row spacing, and late planting into warm soil to encourage rapid crop germination.[61]
Mechanical and chemical weed control practices used on organic farms can be broadly grouped as:[64]
- Tillage - Turning the soil between crops to incorporate crop residues and soil amendments; remove existing weed growth and prepare a seedbed for planting; turning soil after seeding to kill weeds, including cultivation of row crops.
- Mowing and cutting - Removing top growth of weeds.
- Flame weeding and thermal weeding - Using heat to kill weeds.
- Mulching - Blocking weed emergence with organic materials, plastic films, or landscape fabric.[65]
Some naturally sourced chemicals are allowed for herbicidal use. These include certain formulations of acetic acid (concentrated vinegar), corn gluten meal, and essential oils. A few selective bioherbicides based on fungal pathogens have also been developed. At this time, however, organic herbicides and bioherbicides play a minor role in the organic weed control toolbox.[64]
Weeds can be controlled by grazing. For example, geese have been used successfully to weed a range of organic crops including cotton, strawberries, tobacco, and corn,[66] reviving the practice of keeping cotton patch geese, common in the southern U.S. before the 1950s. Similarly, some rice farmers introduce ducks and fish to wet paddy fields to eat both weeds and insects.[67]
Controlling other organisms
[edit]Organisms aside from weeds that cause problems on farms include arthropods (e.g., insects, mites), nematodes, fungi and bacteria. Practices include, but are not limited to:
Examples of predatory beneficial insects include minute pirate bugs, big-eyed bugs, and to a lesser extent ladybugs (which tend to fly away), all of which eat a wide range of pests. Lacewings are also effective, but tend to fly away. Praying mantis tend to move more slowly and eat less heavily. Parasitoid wasps tend to be effective for their selected prey, but like all small insects can be less effective outdoors because the wind controls their movement. Predatory mites are effective for controlling other mites.[60]: 66–90
Naturally derived insecticides allowed for use on organic farms include Bacillus thuringiensis (a bacterial toxin), pyrethrum (a chrysanthemum extract), spinosad (a bacterial metabolite), neem (a tree extract) and rotenone (a legume root extract). Fewer than 10% of organic farmers use these pesticides regularly; a 2003 survey found that only 5.3% of vegetable growers in California use rotenone while 1.7% use pyrethrum.[68]: 26 These pesticides are not always more safe or environmentally friendly than synthetic pesticides and can cause harm.[60]: 92 The main criterion for organic pesticides is that they are naturally derived, and some naturally derived substances have been controversial. Controversial natural pesticides include rotenone, copper, nicotine sulfate, and pyrethrums[69][70] Rotenone and pyrethrum are particularly controversial because they work by attacking the nervous system, like most conventional insecticides. Rotenone is extremely toxic to fish[71] and can induce symptoms resembling Parkinson's disease in mammals.[72][73] Although pyrethrum (natural pyrethrins) is more effective against insects when used with piperonyl butoxide (which retards degradation of the pyrethrins),[74] organic standards generally do not permit use of the latter substance.[75][76][77]
Naturally derived fungicides allowed for use on organic farms include the bacteria Bacillus subtilis and Bacillus pumilus; and the fungus Trichoderma harzianum. These are mainly effective for diseases affecting roots. Compost tea contains a mix of beneficial microbes, which may attack or out-compete certain plant pathogens,[78] but variability among formulations and preparation methods may contribute to inconsistent results or even dangerous growth of toxic microbes in compost teas.[79]
Some naturally derived pesticides are not allowed for use on organic farms. These include nicotine sulfate, arsenic, and strychnine.[80]
Synthetic pesticides allowed for use on organic farms include insecticidal soaps and horticultural oils for insect management; and Bordeaux mixture, copper hydroxide and sodium bicarbonate for managing fungi.[80] Copper sulfate and Bordeaux mixture (copper sulfate plus lime), approved for organic use in various jurisdictions,[75][76][80] can be more environmentally problematic than some synthetic fungicides disallowed in organic farming.[81][82] Similar concerns apply to copper hydroxide. Repeated application of copper sulfate or copper hydroxide as a fungicide may eventually result in copper accumulation to toxic levels in soil,[83] and admonitions to avoid excessive accumulations of copper in soil appear in various organic standards and elsewhere. Environmental concerns for several kinds of biota arise at average rates of use of such substances for some crops.[84] In the European Union, where replacement of copper-based fungicides in organic agriculture is a policy priority,[85] research is seeking alternatives for organic production.[86]
Livestock
[edit]
Raising livestock and poultry, for meat, dairy and eggs, is another traditional farming activity that complements growing. Organic farms attempt to provide animals with natural living conditions and feed. Organic certification verifies that livestock are raised according to the USDA organic regulations throughout their lives.[87] These regulations include the requirement that all animal feed must be certified organic.
Organic livestock may be, and must be, treated with medicine when they are sick, but drugs cannot be used to promote growth, their feed must be organic, and they must be pastured.[88]: 19ff [89]
Also, horses and cattle were once a basic farm feature that provided labour, for hauling and plowing, fertility, through recycling of manure, and fuel, in the form of food for farmers and other animals. While today, small growing operations often do not include livestock, domesticated animals are a desirable part of the organic farming equation, especially for true sustainability, the ability of a farm to function as a self-renewing unit.
Genetic modification
[edit]A key characteristic of organic farming is the exclusion of genetically engineered plants and animals. On 19 October 1998, participants at IFOAM's 12th Scientific Conference issued the Mar del Plata Declaration, where more than 600 delegates from over 60 countries voted unanimously to exclude the use of genetically modified organisms in organic food production and agriculture.
Although opposition to the use of any transgenic technologies in organic farming is strong, agricultural researchers Luis Herrera-Estrella and Ariel Alvarez-Morales continue to advocate integration of transgenic technologies into organic farming as the optimal means to sustainable agriculture, particularly in the developing world.[90] Organic farmer Raoul Adamchak and geneticist Pamela Ronald write that many agricultural applications of biotechnology are consistent with organic principles and have significantly advanced sustainable agriculture.[91]
Although GMOs are excluded from organic farming, there is concern that the pollen from genetically modified crops is increasingly penetrating organic and heirloom seed stocks, making it difficult, if not impossible, to keep these genomes from entering the organic food supply. Differing regulations among countries limits the availability of GMOs to certain countries, as described in the article on regulation of the release of genetic modified organisms.
Tools
[edit]Organic farmers use a number of traditional farm tools to do farming, and may make use of agricultural machinery in similar ways to conventional farming. In the developing world, on small organic farms, tools are normally constrained to hand tools and diesel powered water pumps.
Standards
[edit]Standards regulate production methods and in some cases final output for organic agriculture. Standards may be voluntary or legislated. As early as the 1970s private associations certified organic producers. In the 1980s, governments began to produce organic production guidelines. In the 1990s, a trend toward legislated standards began, most notably with the 1991 EU-Eco-regulation developed for European Union,[92] which set standards for 12 countries, and a 1993 UK program. The EU's program was followed by a Japanese program in 2001, and in 2002 the U.S. created the National Organic Program (NOP).[93] As of 2007 over 60 countries regulate organic farming (IFOAM 2007:11). In 2005 IFOAM created the Principles of Organic Agriculture, an international guideline for certification criteria.[94] Typically the agencies accredit certification groups rather than individual farms.
Production materials used for the creation of USDA Organic certified foods require the approval of a NOP accredited certifier.
EU-organic production-regulation on "organic" food labels define "organic" primarily in terms of whether "natural" or "artificial" substances were allowed as inputs in the food production process.[95]
Composting
[edit]Using manure as a fertilizer risks contaminating food with animal gut bacteria, including pathogenic strains of E. coli that have caused fatal poisoning from eating organic food.[96] To combat this risk, USDA organic standards require that manure must be sterilized through high temperature thermophilic composting. If raw animal manure is used, 120 days must pass before the crop is harvested if the final product comes into direct contact with the soil. For products that do not directly contact soil, 90 days must pass prior to harvest.[97]
In the US, the Organic Food Production Act of 1990 (OFPA) as amended, specifies that a farm can not be certified as organic if the compost being used contains any synthetic ingredients. The OFPA singles out commercially blended fertilizers [composts] disallowing the use of any fertilizer [compost] that contains prohibited materials.[98]
Economics
[edit]The economics of organic farming, a subfield of agricultural economics, encompasses the entire process and effects of organic farming in terms of human society, including social costs, opportunity costs, unintended consequences, information asymmetries, and economies of scale.
Labour input, carbon and methane emissions, energy use, eutrophication, acidification, soil quality, effect on biodiversity, and overall land use vary considerably between individual farms and between crops, making general comparisons between the economics of organic and conventional agriculture difficult.[99][100]
In the European Union "organic farmers receive more subsidies under agri-environment and animal welfare subsidies than conventional growers".[101]
Geographic producer distribution
[edit]The markets for organic products are strongest in North America and Europe, which as of 2001 are estimated to have $6 and $8 billion respectively of the $20 billion global market.[68]: 6 As of 2007, Australasia has 39% of the total organic farmland, including Australia's 11,800,000 hectares (29,000,000 acres) but 97% of this land is sprawling rangeland (2007:35). US sales are 20x as much.[68]: 7 Europe farms 23% of global organic farmland (6,900,000 ha (17,000,000 acres)), followed by Latin America and the Caribbean with 20% (6,400,000 ha (16,000,000 acres)). Asia has 9.5% while North America has 7.2%. Africa has 3%.[102]
Besides Australia,[103] the countries with the most organic farmland are Argentina (3.1 million hectares (7.7 million acres)), China (2.3 million hectares (5.7 million acres)), and the United States (1.6 million hectares (4.0 million acres)). Much of Argentina's organic farmland is pasture, like that of Australia (2007:42). Spain, Germany, Brazil (the world's largest agricultural exporter), Uruguay, and England follow the United States in the amount of organic land (2007:26).
In the European Union (EU25) 3.9% of the total utilized agricultural area was used for organic production in 2005. The countries with the highest proportion of organic land were Austria (11%) and Italy (8.4%), followed by the Czech Republic and Greece (both 7.2%). The lowest figures were shown for Malta (0.2%), Poland (0.6%), and Ireland (0.8%).[104][105] In 2009, the proportion of organic land in the EU grew to 4.7%. The countries with the highest share of agricultural land were Liechtenstein (26.9%), Austria (18.5%), and Sweden (12.6%).[106] 16% of all farmers in Austria produced organically in 2010. By the same year the proportion of organic land increased to 20%.[107] In 2005, 168,000 hectares (420,000 acres) of land in Poland was under organic management.[108] In 2012, 288,261 hectares (712,310 acres) were under organic production, and there were about 15,500 organic farmers; retail sales of organic products were EUR 80 million in 2011. As of 2012 organic exports were part of the government's economic development strategy.[109]
After the collapse of the Soviet Union in 1991, agricultural inputs that had previously been purchased from Eastern bloc countries were no longer available in Cuba, and many Cuban farms converted to organic methods out of necessity.[110] Consequently, organic agriculture is a mainstream practice in Cuba, while it remains an alternative practice in most other countries.[111][112] Cuba's organic strategy includes development of genetically modified crops; specifically corn that is resistant to the palomilla moth.[111]
Growth
[edit]
In 2001, the global market value of certified organic products was estimated at US$20 billion. By 2002, this was US$23 billion and by 2015 more than US$43 billion.[113] By 2014, retail sales of organic products reached US$80 billion worldwide.[114] North America and Europe accounted for more than 90% of all organic product sales.[114] In 2018 Australia accounted for 54% of the world's certified organic land with the country recording more than 35,000,000 verified organic hectares (86,000,000 acres).[115]
Organic agricultural land increased almost fourfold in 15 years, from 11 million hectares (27 million acres) in 1999 to 43.7 million hectares (108 million acres) in 2014.[114] Between 2013 and 2014, organic agricultural land grew by 500 thousand hectares (1,200,000 acres) worldwide, increasing in every region except Latin America.[114] During this time period, Europe's organic farmland increased 260 thousand hectares (640,000 acres) to 11.6 million hectares (29 million acres) (+2.3%), Asia's increased 159 thousand hectares (390,000 acres) to 3.6 million hectares (8.9 million acres) (+4.7%), Africa's increased 54 thousand hectares (130,000 acres) to 1.3 million hectares (3.2 million acres) total (+4.5%), and North America's increased 35 thousand hectares (86,000 acres) to 3.1 million hectares (7.7 million acres) total (+1.1%).[114] As of 2014, the country with the most organic land was Australia (17.2 million hectares (43 million acres)), followed by Argentina (3.1 million hectares (7.7 million acres)), and the United States (2.2 million hectares (5.4 million acres)).[114] Australia's organic land area has increased at a rate of 16.5% per annum for the past eighteen years.[115]
In 2013, the number of organic producers grew by almost 270,000, or more than 13%.[114] By 2014, there were a reported 2.3 million organic producers in the world.[114] Most of the total global increase took place in the Philippines, Peru, China, and Thailand.[114] Overall, the majority of all organic producers are in India (650,000 in 2013), Uganda (190,552 in 2014), Mexico (169,703 in 2013) and the Philippines (165,974 in 2014).[114]
In 2016, organic farming produced over 1 million metric tons (980,000 long tons; 1,100,000 short tons) of bananas, over 800 thousand metric tons (790,000 long tons; 880,000 short tons) of soybean, and just under 500 thousand metric tons (490,000 long tons; 550,000 short tons) of coffee.[116]
Productivity
[edit]A 2012 meta-analysis found that productivity is on average 25% lower for organic farming than conventional farming. Yield differences between organic and conventional farming are highly context-dependent, varying with system and site characteristics. Organic yields can be about 5% lower for rain-fed legumes and perennials grown on weakly acidic to weakly alkaline soils, around 13% lower when best organic management practices are applied, and up to 34% lower when conventional and organic systems are most directly comparable.[117]
Another meta-analysis published in the journal Agricultural Systems in 2011 analyzed 362 datasets and found that organic yields were on average 80% of conventional yields. The authors found that there are relative differences in this yield gap based on crop type with crops like soybeans and rice scoring higher than the 80% average and crops like wheat and potato scoring lower. Across global regions, Asia and Central Europe were found to have relatively higher yields and Northern Europe relatively lower than the average.[118]
Long term studies
[edit]A study published in 2005 compared conventional cropping, organic animal-based cropping, and organic legume-based cropping on a test farm at the Rodale Institute over 22 years.[119] The study found that "the crop yields for corn and soybeans were similar in the organic animal, organic legume, and conventional farming systems". It also found that "significantly less fossil energy was expended to produce corn in the Rodale Institute's organic animal and organic legume systems than in the conventional production system. There was little difference in energy input between the different treatments for producing soybeans. In the organic systems, synthetic fertilizers and pesticides were generally not used". As of 2013 the Rodale study was ongoing[120] and a thirty-year anniversary report was published by Rodale in 2012.[121]
A long-term field study comparing organic/conventional agriculture carried out over 21 years in Switzerland concluded that "Crop yields of the organic systems averaged over 21 experimental years at 80% of the conventional ones. The fertilizer input, however, was 34 – 51% lower, indicating an efficient production. The organic farming systems used 20 – 56% less energy to produce a crop unit and per land area this difference was 36 – 53%. In spite of the considerably lower pesticide input the quality of organic products was hardly discernible from conventional analytically and even came off better in food preference trials and picture creating methods."[122]
Profitability
[edit]In the United States, organic farming has been shown to be 2.7 to 3.8 times more profitable for the farmer than conventional farming when prevailing price premiums are taken into account.[123] Globally, organic farming is 22–35% more profitable for farmers than conventional methods, according to a 2015 meta-analysis of studies conducted across five continents.[124]
The profitability of organic agriculture can be attributed to a number of factors. First, organic farmers do not rely on synthetic fertilizer and pesticide inputs, which can be costly. In addition, organic foods currently enjoy a price premium over conventionally produced foods, meaning that organic farmers can often get more for their yield.
The price premium for organic food is an important factor in the economic viability of organic farming. In 2013 there was a 100% price premium on organic vegetables and a 57% price premium for organic fruits. These percentages are based on wholesale fruit and vegetable prices, available through the United States Department of Agriculture's Economic Research Service.[125] Price premiums exist not only for organic versus nonorganic crops, but may also vary depending on the venue where the product is sold: farmers' markets, grocery stores, or wholesale to restaurants. For many producers, direct sales at farmers' markets are most profitable because the farmer receives the entire markup, however this is also the most time and labour-intensive approach.[126]
There have been signs of organic price premiums narrowing in recent years, which lowers the economic incentive for farmers to convert to or maintain organic production methods.[127] Data from 22 years of experiments at the Rodale Institute found that, based on the current yields and production costs associated with organic farming in the United States, a price premium of only 10% is required to achieve parity with conventional farming.[127] A separate study found that on a global scale, price premiums of only 5-7% were needed to break even with conventional methods.[124] Without the price premium, profitability for farmers is mixed.[68]: 11
For markets and supermarkets organic food is profitable as well, and is generally sold at significantly higher prices than non-organic food.[128]
Energy efficiency
[edit]Compared to conventional agriculture, the energy efficiency of organic farming depends upon crop type and farm size.[100][129]
Two studies – both comparing organically- versus conventionally-farmed apples – declare contradicting results, one saying organic farming is more energy efficient, the other saying conventionally is more efficient.[129][130]
It has generally been found that the labour input per unit of yield was higher for organic systems compared with conventional production.[129]
Sales and marketing
[edit]Most sales are concentrated in developed nations. In 2008, 69% of Americans claimed to occasionally buy organic products, down from 73% in 2005. One theory for this change was that consumers were substituting "local" produce for "organic" produce.[131][132]
Distributors
[edit]The United States Department of Agriculture requires that distributors, manufacturers, and processors of organic products be certified by an accredited state or private agency.[133] In 2007, there were 3,225 certified organic handlers, up from 2,790 in 2004.[134]
Organic handlers are often small firms; 48% reported sales below $1 million annually, and 22% between $1 and $5 million per year.[135] Smaller handlers are more likely to sell to independent natural grocery stores and natural product chains whereas large distributors more often market to natural product chains and conventional supermarkets, with a small group marketing to independent natural product stores.[134] Some handlers work with conventional farmers to convert their land to organic with the knowledge that the farmer will have a secure sales outlet. This lowers the risk for the handler as well as the farmer. In 2004, 31% of handlers provided technical support on organic standards or production to their suppliers and 34% encouraged their suppliers to transition to organic.[133] Smaller farms often join in cooperatives to market their goods more effectively.
93% of organic sales are through conventional and natural food supermarkets and chains, while the remaining 7% of U.S. organic food sales occur through farmers' markets, foodservices, and other marketing channels.[136]
Direct-to-consumer sales
[edit]In the 2012 Census, direct-to-consumer sales equalled $1.3 billion, up from $812 million in 2002, an increase of 60 percent. The number of farms that utilize direct-to-consumer sales was 144,530 in 2012 in comparison to 116,733 in 2002.[137] Direct-to-consumer sales include farmers' markets, community supported agriculture (CSA), on-farm stores, and roadside farm stands. Some organic farms also sell products direct to retailer, direct to restaurant and direct to institution.[138] According to the 2008 Organic Production Survey, approximately 7% of organic farm sales were direct-to-consumers, 10% went direct to retailers, and approximately 83% went into wholesale markets. In comparison, only 0.4% of the value of convention agricultural commodities were direct-to-consumers.[139]
While not all products sold at farmer's markets are certified organic, this direct-to-consumer avenue has become increasingly popular in local food distribution and has grown substantially since 1994. In 2014, there were 8,284 farmer's markets in comparison to 3,706 in 2004 and 1,755 in 1994, most of which are found in populated areas such as the Northeast, Midwest, and West Coast.[140]
Labour and employment
[edit]Organic production is more labour-intensive than conventional production.[141] Increased labour cost is one factor that contributes to organic food being more expensive.[141] Organic farming's increased labour requirements can be seen in a good way providing more job opportunities for people. The 2011 UNEP Green Economy Report suggests that "[a]n increase in investment in green agriculture is projected to lead to growth in employment of about 60 per cent compared with current levels" and that "green agriculture investments could create 47 million additional jobs compared with BAU2 over the next 40 years".[142]
Much of the growth in women labour participation in agriculture is outside the "male dominated field of conventional agriculture". Organic farming has a greater percentage of women working in the farms with 21% compared to farming in general with 14%.[citation needed]
World's food security
[edit]In 2007, the United Nations Food and Agriculture Organization (FAO) said that organic agriculture often leads to higher prices and hence a better income for farmers, so it should be promoted. However, FAO stressed that organic farming could not feed the current human population, much less the larger future population. Both data and models showed that organic farming was far from sufficient. Therefore, chemical fertilizers were needed to avoid hunger.[143] Others have argued that organic farming is particularly well-suited to food-insecure areas, and therefore could be "an important part of increased food security" in places like sub-Saharan Africa[144]
FAO stressed that fertilizers and other chemical inputs can increase production, particularly in Africa where fertilizers are currently used 90% less than in Asia.[143] For example, in Malawi the yield has been boosted using seeds and fertilizers.[143]
Also NEPAD, a development organization of African governments, announced that feeding Africans and preventing malnutrition requires fertilizers and enhanced seeds.[145]
According to a 2012 study from McGill University, organic best management practices show an average yield only 13% less than conventional.[146] In the world's poorer nations where most of the world's hungry live, and where conventional agriculture's expensive inputs are not affordable for the majority of farmers, adopting organic management actually increases yields 93% on average, and could be an important part of increased food security.[144][147]
Capacity building in developing countries
[edit]Organic agriculture can contribute to ecological sustainability, especially in poorer countries.[148] The application of organic principles enables employment of local resources (e.g., local seed varieties, manure, etc.) and therefore cost-effectiveness. Local and international markets for organic products show tremendous growth prospects and offer creative producers and exporters excellent opportunities to improve their income and living conditions.[149]
Organic agriculture is knowledge intensive. Globally, capacity building efforts are underway, including localized training material, to limited effect. As of 2007, the International Federation of Organic Agriculture Movements hosted more than 170 free manuals and 75 training opportunities online.[citation needed]
In 2008 the United Nations Environmental Programme (UNEP) and the United Nations Conference on Trade and Development (UNCTAD) stated that "organic agriculture can be more conducive to food security in Africa than most conventional production systems, and that it is more likely to be sustainable in the long-term"[150] and that "yields had more than doubled where organic, or near-organic practices had been used" and that soil fertility and drought resistance improved.[151]
Millennium Development Goals
[edit]The value of organic agriculture (OA) in the achievement of the Millennium Development Goals (MDG), particularly in poverty reduction efforts in the face of climate change, is shown by its contribution to both income and non-income aspects of the MDGs. These benefits are expected to continue in the post-MDG era. A series of case studies conducted in selected areas in Asian countries by the Asian Development Bank Institute (ADBI) and published as a book compilation by ADB in Manila document these contributions to both income and non-income aspects of the MDGs. These include poverty alleviation by way of higher incomes, improved farmers' health owing to less chemical exposure, integration of sustainable principles into rural development policies, improvement of access to safe water and sanitation, and expansion of global partnership for development as small farmers are integrated in value chains.[152]
A related ADBI study also sheds on the costs of OA programs and set them in the context of the costs of attaining the MDGs. The results show considerable variation across the case studies, suggesting that there is no clear structure to the costs of adopting OA. Costs depend on the efficiency of the OA adoption programs. The lowest cost programs were more than ten times less expensive than the highest cost ones. However, further analysis of the gains resulting from OA adoption reveals that the costs per person taken out of poverty was much lower than the estimates of the World Bank,[153] based on income growth in general or based on the detailed costs of meeting some of the more quantifiable MDGs (e.g., education, health, and environment).[154]
Externalities
[edit]Agriculture imposes negative externalities upon society through public land and other public resource use, biodiversity loss, erosion, pesticides, nutrient pollution, and assorted other problems. Positive externalities include self-reliance, entrepreneurship, respect for nature, and air quality.[citation needed] Organic methods differ from conventional methods in the impacts of their respective externalities, dependent on implementation and crop type. Overall land use is generally higher for organic methods, but organic methods generally use less energy in production.[100][155] The analysis and comparison of externalities is complicated by whether the comparison is done using a per unit area measurement or per unit of production, and whether analysis is done on isolated plots or on farm units as a whole.[156]
Measurements of biodiversity are highly variable between studies, farms, and organism groups. "Birds, predatory insects, soil organisms and plants responded positively to organic farming, while non-predatory insects and pests did not. A 2005 review found that the positive effects of organic farming on abundance were prominent at the plot and field scales, but not for farms in matched landscapes."[157]
Other studies that have attempted to examine and compare conventional and organic systems of farming and have found that organic techniques reduce levels of biodiversity less than conventional systems do, and use less energy and produce less waste when calculated per unit area, although not when calculated per unit of output. "Farm comparisons show that actual (nitrate) leaching rates per hectare[/acre] are up to 57% lower on organic than on conventional fields. However, the leaching rates per unit of output were similar or slightly higher." "On a per-hectare[/-acre] scale, the CO2 emissions are 40 – 60% lower in organic farming systems than in conventional ones, whereas on a per-unit output scale, the CO2 emissions tend to be higher in organic farming systems."[156][158]
It has been proposed that organic agriculture can reduce the level of some negative externalities from (conventional) agriculture. Whether the benefits are private, or public depends upon the division of property rights.[159]
Issues
[edit]
According to a meta analysis published in 2017, compared to conventional agriculture, biological agriculture has a higher land requirement per yield unit, a higher eutrophication potential, a higher acidification potential and a lower energy requirement, but is associated with similarly high greenhouse gas emissions.[100]
A 2003 to 2005 investigation by the Cranfield University for the Department for Environment, Food and Rural Affairs in the UK found that it is difficult to compare the global warming potential, acidification and eutrophication emissions but "Organic production often results in increased burdens, from factors such as nitrogen leaching and N2O emissions", even though primary energy use was less for most organic products. N2O is always the largest global warming potential contributor except in tomatoes. However, "organic tomatoes always incur more burdens (except pesticide use)". Some emissions were lower "per area", but organic farming always required 65 to 200% more field area than non-organic farming. The numbers were highest for bread wheat (200+ % more) and potatoes (160% more).[161][162]
Environmental impact and emissions
[edit]Researchers at Oxford University analysed 71 peer-reviewed studies and observed that organic products are sometimes worse for the environment.[163] Organic milk, cereals, and pork generated higher greenhouse gas emissions per product than conventional ones but organic beef and olives had lower emissions in most studies.[163] Usually organic products required less energy, but more land.[163] Per unit of product, organic produce generates higher nitrogen leaching, nitrous oxide emissions, ammonia emissions, eutrophication, and acidification potential than conventionally grown produce.[164] Other differences were not significant.[164] The researchers concluded that public debate should consider various manners of employing conventional or organic farming, and not merely debate conventional farming as opposed to organic farming. They also sought to find specific solutions to specific circumstances.[164][clarification needed]
A 2018 review article in the Annual Review of Resource Economics found that organic agriculture is more polluting per unit of output and that widespread upscaling of organic agriculture would cause additional loss of natural habitats.[27]
Proponents of organic farming have claimed that organic agriculture emphasizes closed nutrient cycles, biodiversity, and effective soil management providing the capacity to mitigate and even reverse the effects of climate change[165] and that organic agriculture can decrease fossil fuel emissions.[166] "The carbon sequestration efficiency of organic systems in temperate climates is almost double (575–700 kilograms per hectare per year (16.3–19.8 lb/acre/Ms)) that of conventional treatment of soils, mainly owing to the use of grass clovers for feed and of cover crops in organic rotations."[167] However, studies acknowledge organic systems require more acreage to produce the same yield as conventional farms. By converting to organic farms in developed countries where most arable land is accounted for,[168] increased deforestation would decrease overall carbon sequestration.[169]
Smith et al. (2019) analysed the net greenhouse gas emissions resulting from a hypothetical full conversion of agriculture in England and Wales to 100% organic production. They estimated that such a transition would lead to a 40% reduction in food production compared to conventional farming. Domestic greenhouse gas emissions would decrease by 6%, but the lower yields would require increased food imports, resulting in land-use change abroad. In the medium scenario—where half of the additional land is converted from grassland and moderate soil carbon sequestration is assumed—this would lead to a 21% increase in global greenhouse gas emissions emissions compared to the conventional system.[28]
Nutrient leaching
[edit]According to a 2012 meta-analysis of 71 studies, nitrogen leaching, nitrous oxide emissions, ammonia emissions, eutrophication potential and acidification potential were higher for organic products. Specifically, the emission per area of land is lower, but per amount of food produced is higher.[164] This is due to the lower crop yield of organic farms. Excess nutrients in lakes, rivers, and groundwater can cause algal blooms, eutrophication, and subsequent dead zones. In addition, nitrates are harmful to aquatic organisms by themselves.[170]
Land use
[edit]A 2012 Oxford meta-analysis of 71 studies found that organic farming requires 84% more land for an equivalent amount of harvest, mainly due to lack of nutrients but sometimes due to weeds, diseases or pests, lower yielding animals and land required for fertility building crops.[164] While organic farming does not necessarily save land for wildlife habitats and forestry in all cases,[163] the most modern breakthroughs in organic are addressing these issues with success.[171][172][173]
Professor Wolfgang Branscheid says that organic animal production is not good for the environment, because organic chicken requires twice as much land as "conventional" chicken and organic pork a quarter more.[174] According to a calculation by Hudson Institute, organic beef requires three times as much land.[175] On the other hand, certain organic methods of animal husbandry have been shown to restore desertified, marginal, and/or otherwise unavailable land to agricultural productivity and wildlife.[176][177] Or by getting both forage and cash crop production from the same fields simultaneously, reduce net land use.[178]
SRI methods for rice production, without external inputs, have produced record yields on some farms,[179][180] but not others.[181]
Pesticides
[edit]
In organic farming the use of synthetic pesticides and certain natural compounds that are produced using chemical synthesis are prohibited. The organic labels restrictions are not only based on the nature of the compound, but also on the method of production.
A non-exhaustive list of organic approved pesticides with their median lethal doses:
- Boric acid is used as an insecticide (LD50: 2660 mg/kg).
- Copper(II) sulfate is used as a fungicide and is also used in conventional agriculture (LD50 300 mg/kg). Conventional agriculture has the option to use the less toxic Mancozeb (LD50 4,500 to 11,200 mg/kg)
- Lime sulfur (aka calcium polysulfide) and sulfur are considered to be allowed, synthetic materials[182] (LD50: 820 mg/kg)
- Neem oil is used as an insect repellant in India;[183][184] since it contains azadirachtin its use is restricted in the UK and Europe.[185]
- Pyrethrin comes from chemicals extracted from flowers of the genus Pyrethrum (LD50 of 370 mg/kg). Its potent toxicity is used to control insects.
Food quality and safety
[edit]While there may be some differences in the amounts of nutrients and anti-nutrients when organically produced food and conventionally-produced food are compared, the variable nature of food production and handling makes it difficult to generalize results, and there is insufficient evidence to make claims that organic food is safer or healthier than conventional food.[186][187][188][189][190]
Soil conservation
[edit]Supporters claim that organically managed soil has a higher quality[191] and higher water retention.[192] This may help increase yields for organic farms in drought years. Organic farming can build up soil organic matter better than conventional no-till farming, which suggests long-term yield benefits from organic farming.[193] An 18-year study of organic methods on nutrient-depleted soil concluded that conventional methods were superior for soil fertility and yield for nutrient-depleted soils in cold-temperate climates, arguing that much of the benefit from organic farming derives from imported materials that could not be regarded as self-sustaining.[194]
In Dirt: The Erosion of Civilizations, geomorphologist David Montgomery outlines a coming crisis from soil erosion. Agriculture relies on roughly one meter of topsoil, and that is being depleted ten times faster than it is being replaced.[195] No-till farming, which some claim depends upon pesticides, is one way to minimize erosion. However, a 2007 study by the USDA's Agricultural Research Service has found that manure applications in tilled organic farming are better at building up the soil than no-till.[196][197][198][199]
Gunsmoke Farms, a 137 square kilometres (53 square miles) organic farming project in South Dakota, suffered from massive soil erosion as result of tilling after it switched to organic farming.[200]
Biodiversity
[edit]
Nearly all non-crop, naturally occurring[201] species observed in comparative farm land practice studies show a preference for organic farming both by abundance and diversity.[202][203] An average of 30% more species inhabit organic farms,[204] however this does not account for possible loss of biodiversity due to decreased yields because more land is needed.[205] Birds, butterflies, soil microbes, beetles, earthworms,[206][207] spiders, vegetation, and mammals are particularly affected. Lack of herbicides and pesticides improve biodiversity fitness and population density.[203] Many weed species attract beneficial insects that improve soil qualities and forage on weed pests.[208] Soil-bound organisms often benefit because of increased bacteria populations due to natural fertilizer such as manure, while experiencing reduced intake of herbicides and pesticides.[202] Increased biodiversity, especially from beneficial soil microbes and mycorrhizae have been proposed as an explanation for the high yields experienced by some organic plots, especially in light of the differences seen in a 21-year comparison of organic and control fields.[209]
A wide range of organisms benefit from organic farming, but it is unclear whether organic methods confer greater benefits than conventional integrated agri-environmental programs.[202] Organic farming is often presented as a more biodiversity-friendly practice, but the generality of the beneficial effects of organic farming is debated as the effects appear often species- and context-dependent, and current research has highlighted the need to quantify the relative effects of local- and landscape-scale management on farmland biodiversity.[210] In this context, two landscape management strategies are traditionally opposed: land sparing (which combines intensive farming and nature reserves) and land sharing via organic farming.[211][212][213] A 2018 literature review of empirical studies indicates that land sparing is generally favored for conserving tropical forest biodiversity (67% of relevant studies).[214]
Organic farming supports higher biodiversity than conventional farming, but at the cost of lower yields. A meta-analysis found that organic farming had on average a 23% increase in biodiversity with a similar reduction in yield. The authors also evaluated whether biodiversity gains outweigh yield losses at the landscape level and concluded that organic farming is advantageous when surrounding unfarmed land is less than 2.4 times as biodiverse as conventional farmland. However, semi-natural habitats and uncropped field margins often exceed this threshold, suggesting that conventional farming combined with land sparing may be preferable in many landscapes.[215]
Hodgson et al. found that conventional farming combined with setting aside land as nature reserves is more beneficial for butterfly populations when the yield of organic farming falls below 87% of that of conventional farming.[216]
A 2018 review article in the Annual Review of Resource Economics found that widespread upscaling of organic agriculture would cause additional loss of natural habitats because more land is needed due to lower yields in organic farming.[27]
Labour standards
[edit]Organic agriculture is often considered to be more socially just and economically sustainable for farmworkers than conventional agriculture. However, there is little social science research or consensus as to whether or not organic agriculture provides better working conditions than conventional agriculture.[217] As many consumers equate organic and sustainable agriculture with small-scale, family-owned organizations it is widely interpreted that buying organic supports better conditions for farmworkers than buying with conventional producers.[218] Organic agriculture is generally more labour-intensive due to its dependence on manual practices for fertilization and pest removal. Although illnesses from inputs pose less of a risk[dubious – discuss], hired workers still fall victim to debilitating musculoskeletal disorders associated with agricultural work. The USDA certification requirements outline growing practices and ecological standards but do nothing to codify labour practices. Independent certification initiatives such as the Agricultural Justice Project, Domestic Fair Trade Working Group, and the Food Alliance have attempted to implement farmworker interests but because these initiatives require voluntary participation of organic farms, their standards cannot be widely enforced.[219] Despite the benefit to farmworkers of implementing labour standards, there is little support among the organic community for these social requirements. Many actors of the organic industry believe that enforcing labour standards would be unnecessary,[218] unacceptable,[219] or unviable due to the constraints of the market.[217]
Regional support for organic farming
[edit]

The following is a selected list of support given in some regions.
Europe
[edit]The EU-organic production-regulation is a part of the European Union regulation that sets rules about the production of organic agricultural and livestock products and how to label them. In the EU, organic farming and organic food are more commonly known as ecological or biological.[1]
The regulation is derived from the guidelines of the International Federation of Organic Agriculture Movements (IFOAM), which is an association of about 800 member organizations in 119 countries.
As in the rest of the world, the organic market in Europe continues to grow and more land is farmed organically each year. "More farmers cultivate organically, more land is certified organic, and more countries report organic farming activities" as per the 2016 edition of the study "The World of Organic Agriculture Archived 11 November 2017 at the Wayback Machine" according to data from the end of 2014 published by FiBL and IFOAM in 2016.
Denmark
[edit]Denmark has a long ongoing support for converting conventional farming into organic farming, which has been taught in academic classes in universities since 1986. The state began substitutes and has promoted a special national label for products that qualify as organic since 1989. Denmark is thus the first country in the world to substitute organic farming, promoting the concept and organizing the distribution of organic products.[220] Today the government accept applicants for financial support during conversion years, as in Danish regulations farms must not have utilized conventional farming methods such as the usage of pesticides for several years before products can be assessed for qualification as organic. This financial support has in recent years been cut due to organic farming increasing in profitability, and some goods surpassing the profitability of conventional farming in domestic markets. In general, the financial situation of organic farmers in Denmark boomed between 2010 and 2018, while in 2018 serious nationwide long-lasting droughts stagnated the economic results of organic farmers; however, the average farmer still achieved a net positive result that year.[221] In 2021 Denmark's (and Europe's) largest slaughterhouse, Danish Crown, publicized its expectations of stagnating sales of conventional pork domestically, however it expected increasing sales of organic pork and especially free range organic pork.[222] Besides the conversion support, there are still base subsidies for organic farming paid per area of qualified farm land.[223]
The first Danish private development organisation, SamsØkologisk, was established in 2013, by veteran organic farmers from the existing organisation Økologisk Samsø. The development organisation has intentions to buy and invest in farmland and then lend the land to young and aspiring farmers seeking to get into farming, especially organic farming. This organisation reports 300 economical active members as of 2021, but does not publish the amount of acquired land or active lenders.[224]
However, the organic farming concept in Denmark is often not limited to organic farming as the definition is globally. Instead, the majority of organic farming is instead "ecological farming". The development of this concept has been parallel with the general organic farming movement, and is most often used interchangeable with organic farming. Thus, there is a much stronger focus on the environmental and especially the ecological impact of ecological farming than organic farming. E.g. besides the base substitute for organic farming, farmers can qualify for an extra substitute equal to 2/3 of the base for realizing a specific reduction in the usage of added nitrogen to the farmland (also by organic means).[223] There are also parallels to the extended organic movements of regenerative agriculture, although far from all concepts in regenerative agriculture are included in the national strategy at this time, but exist as voluntary options for each farmer. For these reasons, international organic products do not fulfill the requirements of ecological farming and thus do not receive the domestic label for ecological products, rather they receive the standard European Union organic label.
Ukraine
[edit]The Ministry of Agrarian Policy and Food of Ukraine is the central executive body that develops the regulatory framework for the organic sector in Ukraine, maintains the state registers of certification bodies, operators and organic seeds and planting material, and provides training and professional development for organic inspectors.
Thanks to the hard work on organic legislation by the Ministry of Agrarian Policy and Food of Ukraine and the organic working group that includes the main players of the Ukraine's organic sector, on 10 July 2018, the Verkhovna Rada of Ukraine (the Ukrainian Parliament) adopted the Law of Ukraine "On Basic Principles and Requirements for Organic Production, Circulation and Labelling of Organic Products" No. 2496, which was enacted on 2 August 2019. As of April 2024, organic production, circulation and labelling of organic products in Ukraine is regulated by this law as well as relevant by-laws.
One more important governmental institution of the organic sector of Ukraine is the State Service of Ukraine on Food Safety and Consumer Protection. It is the central executive body authorised to conduct state supervision (control) in the field of organic production, circulation and labelling of organic products in accordance with the organic legislation of Ukraine. This includes state supervision (control) over compliance with the legislation in the field of organic production, circulation and labelling of organic products: inspection of certification bodies; random inspection of operators; monitoring of organic products on the market to prevent the entry of non-organic products labelled as organic.
The State Institution "Entrepreneurship and Export Promotion Office" (EEPO, Ukraine) contributes to the development of the Ukrainian organic exporters' potential, promotion of the organic sector and formation of a positive image of Ukraine as a reliable supplier of organic products abroad. EEPO actively supports and organises various events for organic exporters, including national pavilions at key international trade fairs, such as BIOFACH (Nuremberg, Germany), Anuga (Cologne, Germany), SIAL (Paris, France), and Middle East Organic & Natural Products Expo (Dubai, UAE). EEPO also created the Catalogue of Ukrainian Exporters of Organic Products in partnership with Organic Standard certification body.
Organic farming is Ukraine is also supported by international technical assistance projects and programmes implementation of which is funded and supported by Switzerland, Germany, and other countries. These project/programmes are the Swiss-Ukrainian program "Higher Value Added Trade from the Organic and Dairy Sector in Ukraine" (QFTP), financed by Switzerland and implemented by the Research Institute of Organic Agriculture (FiBL, Switzerland) in partnership with SAFOSO AG (Switzerland); the Swiss-Ukrainian program "Organic Trade for Development in Eastern Europe" (OT4D), financed by Switzerland through the Swiss State Secretariat for Economic Affairs (SECO) and implemented by IFOAM – Organics International in partnership HELVETAS Swiss Intercooperation and the Research Institute of Organic Agriculture (FiBL, Switzerland); Project "German-Ukrainian Cooperation in Organic Agriculture" (COA).
The project/programme representatives provide their expertise during development of the organic legislative framework and implementation of the legislation in the field of organic production, circulation and labelling of organic products and support various activities related to organic farming and production.
China
[edit]The Chinese government, especially the local government, has provided various supports for the development of organic agriculture since the 1990s. Organic farming has been recognized by local governments for its potential in promoting sustainable rural development.[225] It is common for local governments to facilitate land access of agribusinesses by negotiating land leasing with local farmers. The government also establishes demonstration organic gardens, provides training for organic food companies to pass certifications, subsidizes organic certification fees, pest repellent lamps, organic fertilizer and so on. The government has also been playing an active role in marketing organic products through organizing organic food expos and branding supports.[226]
India
[edit]In India, in 2016, the northern state of Sikkim achieved its goal of converting to 100% organic farming.[227][228][229][230][231] Other states of India, including Kerala,[232][233] Mizoram, Goa, Rajasthan, and Meghalaya, have also declared their intentions to shift to fully organic cultivation.[231]
The South Indian state of Andhra Pradesh is also promoting organic farming, especially Zero Budget Natural Farming (ZBNF), which is a form of regenerative agriculture.[234]
As of 2018, India has the largest number of organic farmers in the world and constitutes more than 30% of organic farmers globally.[235] India has 835,000 certified organic producers.[236] However, the total land under organic cultivation is around 2% of overall farmland.[237][238] The current level food production is 1.5 times greater than what's needed to feed the world. It is thus sufficient to feed 10 billion people which is the projected population peak of 2050 (Holt-Gimenez, 2012). Yet one in nine people remain hungry in the world today (FAO, IFAD, and WFP, 2015).[239]
Dominican Republic
[edit]The Dominican Republic has successfully converted a large amount of its banana crop to organic.[231] The Dominican Republic accounts for 55% of the world's certified organic bananas.[231]
South Korea
[edit]The most noticeable change in Korea's agriculture occurred throughout the 1960s and 1970s. More specifically, the "Green Revolution"[240] program where South Korea experienced reforestations and agricultural revolution. Due to a food shortage during Park Chung Hee's presidency, the government encouraged rice varieties suited for organic farming.[241] Farmers were able to strategize risk minimization efforts by breeding a variety of rice called Japonica with Tongil.[241] They also used less fertilizer and made other economic adjustments to alleviate potential risk factors.[240]
In modern society, organic farming and food policies have changed, more specifically since the 1990s. As expected, the guidelines focus on basic dietary recommendations for consumption of nutrients and Korean-style diets.[242] The main reason for this encouragement is that around 88% of countries across the world face forms of malnutrition.[242] Then in 2009, the Special Act on Safety Management of Children's Dietary Life was passed, restricting foods low in energy and poor in nutrients.[243] It also focused on other nutritional problems Korean students may have had as well.
Thailand
[edit]In Thailand, the Institute for Sustainable Agricultural Communities (ISAC) was established in 1991 to promote organic farming (among other sustainable agricultural practices). The national target via the National Plan for Organic Farming is to attain, by 2021, 1.3 million rai (2,100 square kilometres; 800 square miles) of organically farmed land. Another target is for 40% of the produce from these farmlands to be consumed domestically.[244]
Much progress has been made:[245][246][244]
- Many organic farms have sprouted, growing produce ranging from mangosteen to stinky bean.
- Some of the farms have also established education centres to promote and share their organic farming techniques and knowledge.
- In Chiang Mai Province, there are 18 organic markets. (ISAC-linked)
United States
[edit]The United States Department of Agriculture Rural Development (USDARD) was created in 1994 as a subsection of the USDA that implements programs to stimulate growth in rural communities.[247] One of the programs that the USDARD created provided grants to farmers who practiced organic farming through the Organic Certification Cost Share Program (OCCSP).[248] During the 21st century, the United States has continued to expand its reach in the organic foods market, doubling the number of organic farms in the U.S. in 2016 when compared to 2011.[249]
Employment on organic farms offers potentially large numbers of jobs for people, and this may better manage the Fourth Industrial Revolution. Moreover, sustainable forestry, fishing, and mining, and other conservation-oriented activities provide larger numbers of jobs than more fossil fuel and mechanized work.
- Organic Farming has grown by 3.53 million acres (1,430,000 hectares) in the U.S. from 2000 to 2011.[250]
- In 2016, California had 2,713 organic farms, which makes California the largest producer of organic goods in the U.S.[249]
- 4% of food sales in the U.S. are of organic goods.[251]
Sri Lanka
[edit]As was the case with most countries, Sri Lanka made the transition away from organic farming upon the arrival of the Green Revolution, whereupon it started depending more on chemical fertilizers. This became a highly popularized method when the nation started offering subsidies on the import of artificial fertilizers to increase rice paddy production, and to incentivize farmers to switch from growing traditional varieties into using high yielding varieties (HYVs).[252] This was especially true for young farmers who saw short-term economic profit as more sustainable to their wellbeing, compared to the long term drawbacks to the environment.[253] However, due to the various health concerns with inorganic farming including the possibility of a chronic kidney disease being associated with chemical fertilizers, many middle aged and experienced farmers displayed skepticism towards these new approaches. Some even resorted to organic farming or utilizing insecticide free fertilizers for their crops.[254] In a study conducted by F. Horgan and E. Kudavidanage, the researchers compared crop yields of farmers in Sri Lanka who employed distinct farming techniques including organic farmers who grew traditional varieties, and insecticide-free fertilizer users and pesticide users who grew modern varieties.[254] No significant difference was found among the yield productions and in fact, organic farmers and insecticide-free fertilizer users lamented less about insects such as planthoppers as a challenge to their production. Regardless, many farmers continued to use insecticides to avoid the predicted dangers of pests to their crops, and the cheap sale of agrochemicals provided an easy approach to augment crop growth. Additionally, while organic farming has health benefits, it's a strenuous task which requires more man power.[255] Although that presented a great opportunity for increased employment in Sri Lanka, the economic compensation was not enough to suffice the living expenses of those employed. Thus, most farmers relied on modern methods to run their household, especially after the economic stressors brought on by COVID-19.[256]
However, while Sri Lanka was still facing the new challenges of the pandemic, in the 2019 presidential election campaign, the president, Gotabaya Rajapaksa proposed a 10-year, national transition to organic farming to declare Sri Lanka as the first nation to be known for its organic produce.[256][257] On April 27, 2021,[258] the country issued an order prohibiting the import of any inorganic pesticides or fertilizers, creating chaos among farmers.[259][260][261] While such a change was made over concerns for the nation's ecosystems and the health of citizens where pesticide poisonings prevailed over other health related deaths,[262] the precipitous decision was met with criticism from the agriculture industry. This included fears that the mandate would harm the yields of the country's major crops (despite claims to the contrary), that the country would not be able to produce enough organic fertilizer domestically, and organic farming being more expensive and complex than conventional agriculture.[263][260][256] To put this into perspective, 7.4% of Sri Lanka's GDP is reliant on agriculture and 30% of citizens work in this sector.[264] This means that about ⅓ of its population is dependent on this sector for jobs, making its maintenance highly crucial for the prosperity of the nation's social and economic status. Of special concern was rice and tea, which are a staple food and major export respectively.
Despite it being a record crop in the first half of 2021, the tea crop began to decline in July of that year.[256] Rice production fell by 20% over the first six months of the ban, and prices increased by around 50%. Contrary to its past success at self-sustainability, the country had to import US$450 million worth of rice to meet domestic demand.[256] In late August, the government acknowledged the ban had created a critical dependency on supplies of imported organic fertilizers, but by then food prices had already increased twofold in some cases.[265] In September 2021, the government declared an economic emergency, citing the ban's impact on food prices, as well as inflation from the devaluation of Sri Lankan currency due to the crashing tea industry, and a lack of tourism induced by COVID-19 restrictions.[266][267][265]
In November 2021, the country partially lifted the ban on inorganic farming for certain key crops such as rubber and tea, and began to offer compensation and subsidies to farmers and rice producers in an attempt to cover losses.[268][256][269] The previous subsidies on synthetic fertilizer imports were not reintroduced.[256]
See also
[edit]- Agroecology
- Biointensive
- Biological pest control
- Certified Naturally Grown
- Holistic management (agriculture)
- List of countries by organic farmland
- List of organic food topics
- List of organic gardening and farming topics
- List of pest-repelling plants
- Natural Farming
- Organic farming by continent
- Organic lawn management
- Organic movement
- Organic food culture
- Permaculture
References
[edit]- ^ a b Labelling, article 30 of Regulation (EU) 2018/848 of the European Parliament and of the Council of 30 May 2024 on organic production and labelling of organic products and repealing Council Regulation (EC) No 834/2007.
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Various types and methods of organic agriculture have been developed in the Northern Hemisphere, such as the biological-organic and biodynamic method
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the term biological often refers to organic farming, whereas the term ecological refers to organic plus environmental considerations such as on-farm wildlife management
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A form of production (also organic farming, ecological farming, ecological-biological farming, ecological agriculture, alternative agriculture) for the production of food and other agricultural products
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Biological farming and 'bio' products are terms often used in European countries as equivalent to organic farming. [...] Ecological farming and 'eco' products are terms also used in European countries as equivalent to organic farming.
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Further reading
[edit]- Ableman, M. (April 1993). From the Good Earth: A Celebration of Growing Food Around the World. HNA Books. ISBN 978-0-8109-2517-5.
- Avery, A. The Truth About Organic Foods (Volume 1, Series 1). Henderson Communications, L.L.C. 2006. ISBN 0-9788952-0-7
- Committee on the Role of Alternative Farming Methods in Modern Production Agriculture, National Research Council. 1989. Alternative Agriculture. National Academies Press.
- Guthman, J. Agrarian Dreams: The Parodox of Organic Farming in California, Berkeley and London: University of California Press. 2004. ISBN 978-0-520-24094-0
- Lampkin, N. and S. Padel. (eds.) The Economics of Organic Farming: An International Perspective, CAB International. 1994. ISBN 9780851989112
- Organic Agriculture: Sustainability, Markets and Policies. Organisation for Economic Co-Operation and Development. 1 January 2003. ISBN 978-92-64-10150-0.
- Beecher, N. A.; et al. (2002). "Agroecology of birds in organic and nonorganic farmland". Conservation Biology. 16 (6): 1621–30. Bibcode:2002ConBi..16.1620B. doi:10.1046/j.1523-1739.2002.01228.x. S2CID 83914793.
- Brown, R. W. (1999b). "Margin/field interfaces and small mammals". Aspects of Applied Biology. 54: 203–210.
- Emsley, J. (April 2001). "Going one better than nature". Nature. 410 (6829): 633–634. Bibcode:2001Natur.410..633E. doi:10.1038/35070632. S2CID 31532351.
- Gabriel, D.; Tscharntke, T. (2007). "Insect pollinated plants benefit from organic farming" (PDF). Agriculture, Ecosystems and Environment. 118 (1–4): 43–48. Bibcode:2007AgEE..118...43G. doi:10.1016/j.agee.2006.04.005. Archived from the original (PDF) on 15 December 2014. Retrieved 5 November 2013.
- Kuepper, G. and L. Gegner. Organic Crop Production Overview., ATTRA — National Sustainable Agriculture Information Service. August 2004.
- Kumar Srivastava, Adarsh; Kumar, Anil (2022). "Exploring Organic Farming: Advantages, Challenges, and Future Directions". Plant Science Archives. 7 (3): 9–13. doi:10.51470/PSA.2022.7.3.09.
- Rani, Madhu; Kaushik, Preeti; Bhayana, Seema; Kapoor, Sonia (2023). "Impact of organic farming on soil health and nutritional quality of crops". Journal of the Saudi Society of Agricultural Sciences. 22 (8): 560–569. doi:10.1016/j.jssas.2023.07.002.
- Tsvetkov, Ivan; Atanassov, Atanas; Vlahova, Mariana; Carlier, Lucien; Christov, Nikolai; Lefort, Francois; Rusanov, Krasimir; Badjakov, Ilian; Dincheva, Ivayla; Tchamitchian, Mark; Rakleova, Goritsa; Georgieva, Liliya; Tamm, Lucius; Iantcheva, Anelia; Herforth-Rahmé, Joelle; Paplomatas, Epaminondas; Atanassov, Ivan (2018). "Plant organic farming research – current status and opportunities for future development". Biotechnology & Biotechnological Equipment. 32 (2): 241–260. doi:10.1080/13102818.2018.1427509.
- Wheeler, S. A. (2008). "What influences agricultural professionals' views towards organic agriculture?". Ecological Economics. 65 (1): 145–154. Bibcode:2008EcoEc..65..145W. doi:10.1016/j.ecolecon.2007.05.014.
- Wickramasinghe, L. P.; et al. (2003). "Bat activity and species richness on organic and conventional farms: impact of agricultural intensification". Journal of Applied Ecology. 40 (6): 984–93. Bibcode:2003JApEc..40..984W. doi:10.1111/j.1365-2664.2003.00856.x.
External links
[edit]
Media related to Organic farming at Wikimedia Commons
Organic farming
View on GrokipediaDefinition and Principles
Core Principles
The core principles of organic agriculture, formalized by the International Federation of Organic Agriculture Movements (IFOAM) in 2005, consist of health, ecology, fairness, and care, serving as the ethical and operational foundation for practices worldwide.[14] These principles derive from observations of natural systems and aim to integrate farming with ecological processes, prohibiting synthetic inputs such as chemical fertilizers, pesticides, and genetically modified organisms while emphasizing natural resource cycling.[14] National regulations, including the USDA National Organic Program established in 2000 and the EU's Regulation (EU) 2018/848 effective from 2022, incorporate these tenets by mandating avoidance of prohibited substances and promotion of biodiversity, though they prioritize verifiable compliance over explicit ethical framing.[15] The principle of health asserts that organic systems must sustain and enhance the vitality of soil, plants, animals, humans, and ecosystems as interconnected entities, viewing soil health as foundational to overall productivity and rejecting isolated treatments that disrupt natural balances.[14] This manifests in practices like composting and cover cropping to build soil organic matter, which empirical studies link to improved microbial activity and nutrient retention compared to synthetic amendments.[14] Ecology requires agriculture to emulate and support living ecological cycles, fostering biodiversity through methods such as polyculture and habitat preservation rather than monocropping with chemical interventions.[14] This principle underpins restrictions on tillage to prevent erosion and mandates landscape features like hedgerows for pest regulation via natural predators, aligning with causal mechanisms observed in undisturbed ecosystems.[14] Fairness promotes equitable relationships among stakeholders, ensuring sustainable resource access, fair trade for producers, and humane animal welfare without exploitation, as reflected in standards prohibiting confinement systems and requiring access to outdoors for livestock.[14] Care demands precautionary management to safeguard future generations, emphasizing responsibility in input selection and waste minimization to avoid unintended environmental harms, such as groundwater contamination from runoff.[14] These principles collectively prioritize long-term systemic resilience over short-term yields, though implementation varies by certification rigor across jurisdictions.[14]Distinction from Conventional Farming
Organic farming distinguishes itself from conventional farming primarily through strict prohibitions on synthetic inputs and genetically modified organisms (GMOs). Under standards such as the USDA National Organic Program, organic production bans synthetic pesticides, fertilizers, growth hormones, antibiotics in livestock, sewage sludge, and irradiation, relying instead on natural substances and processes like compost, crop rotations, and biological controls unless explicitly allowed on a national list.[16][17] Conventional farming permits these synthetic inputs to enhance efficiency, pest control, and yields, with no such blanket restrictions on GMOs or chemical applications.[18] In terms of practices, organic systems emphasize soil-building techniques, including diverse crop rotations, cover cropping, and mechanical weed control, aiming to mimic natural ecosystems and foster biodiversity.[19] Conventional methods often prioritize monocultures and tillage supplemented by chemical herbicides and fertilizers to maximize short-term output. Organic certification requires third-party verification of compliance, including multi-year transition periods free of prohibited substances, whereas conventional operations face fewer regulatory mandates on input origins.[17] Empirical comparisons reveal trade-offs in performance metrics. Meta-analyses indicate organic crop yields average 19-25% lower than conventional due to restricted inputs and greater vulnerability to pests and weather variability.[19] On environmental impacts, organic farming reduces synthetic pesticide residues and certain pollutant runoffs but demands more land for equivalent output, potentially increasing habitat conversion and erosion risks; conventional systems often show lower overall greenhouse gas emissions and water eutrophication when accounting for yield differences.[8][20] Soil health outcomes vary, with some studies finding no significant advantage for organic in organic matter accumulation or macronutrient levels, though organic soils may exhibit higher microbial activity in specific contexts.[21][22] Nutritional content in organic produce shows minimal differences from conventional, with meta-analyses reporting few consistent advantages in macronutrients or vitamins, though occasional elevations in antioxidants; claims of broad superiority lack robust support across diverse crops and conditions.[22] Pesticide use in organic farming shifts to natural alternatives, which can require higher volumes and exhibit comparable or greater toxicity to non-target species in some cases.[8] These distinctions reflect organic farming's focus on precautionary avoidance of synthetics over efficiency-driven optimization, leading to higher production costs—often 20-50% more—and reliance on premium pricing for viability.[19]Historical Development
Origins in Traditional and Early Modern Practices
Traditional agricultural systems worldwide predated the development of synthetic fertilizers and pesticides, relying inherently on organic methods to sustain soil fertility and crop yields. Farmers in ancient civilizations, such as those in Mesopotamia and the Nile Valley around 8000–3000 BCE, domesticated crops like wheat, barley, and legumes while using animal manure and crop residues to enrich soils, practices necessitated by the absence of industrial inputs.[23] In ancient Egypt specifically, cultivators harnessed annual Nile River inundations to deposit nutrient-rich silt, supplementing it with livestock manure and composted organic waste to boost productivity, as evidenced in agricultural texts and tomb depictions from the Old Kingdom period onward.[24] Similarly, Roman agronomist Columella in the 1st century CE documented the use of manure, green manures, and basic crop rotations to prevent soil exhaustion, reflecting a causal understanding of nutrient cycling derived from empirical observation.[25] During the medieval period in Europe, the three-field rotation system emerged around the 8th century CE, dividing arable land into thirds: one planted with winter grains like wheat or rye, another with spring crops such as oats or legumes, and the third left fallow to regenerate via natural processes and grazing.[26] This method, which improved upon earlier two-field systems by reducing fallow land from half to one-third, enhanced nitrogen fixation through legumes and maintained long-term soil health without external chemical amendments, though yields remained low due to limited tools and knowledge. Manure from communal livestock herds was systematically applied during fallow periods, underscoring the integration of animal husbandry with crop production in closed-loop systems.[23] These practices, widespread across feudal manors, demonstrated early causal realism in agriculture by linking biodiversity, rotation, and organic amendments to prevent depletion observed in over-cultivated fields. In early modern Europe, from the 16th to 18th centuries, innovations built on these foundations amid population pressures and enclosure movements. The Norfolk four-field system, popularized in England by the 1730s through figures like Charles Townshend, rotated wheat, turnips (for weed control and fodder), barley, and clover (for nitrogen restoration), eliminating fallow entirely and doubling arable productivity in some regions.[27] This approach, reliant on natural fertilizers like manure and legumes rather than synthetics, addressed soil degradation empirically while enabling surplus production that fueled proto-industrial growth. Such methods, absent synthetic interventions until the late 19th century with superphosphate and later ammonia synthesis, exemplified sustainable intensification grounded in observable ecological balances, laying empirical precedents for 20th-century organic advocacy.[27]20th-Century Movement and Key Figures
The organic farming movement coalesced in the early 20th century amid concerns over soil degradation from industrialized agriculture, which increasingly depended on synthetic fertilizers and pesticides following the Haber-Bosch process's widespread adoption after World War I.[28] Pioneers advocated for holistic soil management, drawing from traditional practices and empirical observations of natural fertility cycles, arguing that healthy soil—maintained through composting, crop rotations, and livestock integration—was foundational to productive, resilient farming without chemical crutches.[29] This shift gained momentum in Europe and North America during the interwar period and post-World War II, as agricultural scientists and farmers documented declining yields and health issues linked to monocultures and input overuse.[30] A foundational influence was Rudolf Steiner, an Austrian philosopher who delivered eight lectures on agriculture in June 1924 at Koberwitz (now in Poland), at the request of concerned farmers facing soil vitality losses.[31] Steiner's biodynamic approach, rooted in anthroposophical principles, treated the farm as a self-sustaining organism influenced by cosmic rhythms, incorporating specific herbal preparations to enhance soil life and crop vitality—practices that prefigured organic methods but included esoteric elements like astronomical planting calendars.[32] These ideas spread through Demeter certification, established in 1928, and influenced later organic advocates, though critics have questioned the scientific basis of its spiritual components.[33] Sir Albert Howard, a British agronomist, advanced empirical foundations for organic practices during his 26 years (1905–1931) in India, where he studied indigenous methods yielding robust crops without synthetics.[34] In works like An Agricultural Testament (1940), Howard codified the "law of return," stressing that farm wastes must recycle into soil via composting to mimic natural decomposition and sustain fertility, critiquing chemical fertilizers as disruptive to microbial balances.[29] His observations linked soil health directly to human nutrition, positing that nutrient-dense foods from vital soils prevented disease—a causal chain supported by his field trials showing superior disease resistance in organically managed systems.[35] In Britain, Lady Eve Balfour galvanized the movement by founding the Soil Association on May 5, 1946, with collaborators including Howard, to promote research and policy on humus-based farming.[36] Motivated by her farming experiences and Howard's ideas, Balfour's The Living Soil (1943) called for comparative experiments, launching the Haughley Experiment (initiated 1939, formalized post-war) to test organic versus chemical systems on adjacent plots, revealing benefits like improved soil structure and reduced erosion in organic plots despite initial yield dips.[37] The Association grew to advocate against post-war chemical intensification, influencing European organic standards.[38] In the United States, Jerome Irving Rodale imported and adapted these European insights, purchasing a 63-acre farm in Emmaus, Pennsylvania, in 1940 for hands-on trials.[39] Rodale popularized the term "organic" in America through Organic Farming and Gardening magazine (launched 1942), emphasizing composting, cover crops, and avoidance of synthetics to build soil organic matter, based on data from his farm showing higher microbial activity and nutrient retention.[40] His publishing empire, including books like The Organic Front (1948), fostered a grassroots network, countering the U.S. Department of Agriculture's chemical-focused extension services, though Rodale faced ridicule from mainstream agronomists prioritizing high-input yields.[35] By the 1950s, Rodale's work had established experimental farms that demonstrated long-term soil improvements, laying groundwork for American organic advocacy.[41] Other figures, such as Ehrenfried Pfeiffer, bridged biodynamics to the U.S. via lectures and composting manuals in the 1930s–1940s, while Rachel Carson's Silent Spring (1962) amplified concerns over pesticide harms, indirectly bolstering organic critiques of chemical dependency.[42] These efforts formed a decentralized movement prioritizing observable soil biology over theoretical yield models, with early adopters documenting causal links between organic matter inputs and sustained productivity.[43]Post-1980s Institutionalization and Expansion
The institutionalization of organic farming accelerated in the late 1980s and 1990s through the establishment of national and supranational regulatory frameworks. In the United States, the Organic Foods Production Act of 1990 (OFPA), enacted as Title XXI of the 1990 Farm Bill (P.L. 101-624), authorized the U.S. Department of Agriculture (USDA) to develop uniform national standards for organic production, processing, and labeling, culminating in the National Organic Program (NOP) with final rules issued in December 2000.[44][45] In the European Union, Council Regulation (EEC) No 2092/91, adopted on June 24, 1991, provided the first harmonized rules for organic production methods and the indication "organic" on agricultural products, replacing fragmented national approaches and facilitating cross-border trade. The International Federation of Organic Agriculture Movements (IFOAM), which issued its first basic standards in 1980, influenced these developments by promoting harmonized international guidelines that informed both U.S. and EU regulations.[46][47] These frameworks spurred rapid expansion in certified organic production. In the U.S., certified organic cropland and pasture grew from approximately 1.8 million acres in 2000 to 4.9 million acres in 2021, driven by consumer demand and market incentives.[48] Globally, the organic agricultural area expanded to nearly 99 million hectares by 2023, with an addition of 2.5 million hectares in that year alone, reflecting increases across regions including Africa (24.4% relative growth).[10] In Europe, organic farming gained traction from the mid-1980s, with EU-wide standards enabling subsidized conversions and market development; by the 1990s, most member states had implemented certification systems aligned with the 1991 regulation.[49] Institutional support extended beyond regulation to include research, education, and financial incentives. The USDA's NOP facilitated accredited certification agencies, while EU policies from the late 1980s incorporated organic farming into the Common Agricultural Policy through conversion aids and rural development funds.[50] IFOAM's ongoing role in standard-setting and advocacy helped integrate organic principles into international trade agreements and sustainability initiatives, contributing to the sector's mainstreaming despite ongoing debates over certification rigor and input allowances.[51] This period marked the transition from niche, voluntary practices to a formalized industry segment, with organic retail sales worldwide surpassing $150 billion by 2022.Practices and Methods
Soil Management and Fertility
Organic farming prohibits the use of synthetic fertilizers, relying instead on organic amendments such as compost, animal manure, and green manures to sustain soil fertility.[52] These inputs provide essential nutrients through decomposition by soil microbes, enhancing organic matter content and supporting long-term soil health.[53] Crop rotations and cover cropping are integral, preventing nutrient depletion and promoting nutrient cycling via root exudates and residue incorporation.[54] Leguminous crops play a central role in nitrogen management through symbiotic nitrogen fixation with rhizobia bacteria, converting atmospheric N2 into plant-available forms and potentially adding 50-200 kg N/ha depending on species and conditions.[55] However, fixation rates decline with increasing soil mineral N levels, as plants preferentially uptake existing N, which can limit efficacy in high-fertility soils.[56] Green manures, such as vetch or clover, further bolster fertility by suppressing weeds, reducing erosion, and increasing soil organic carbon upon incorporation, though improper timing can lead to nitrogen immobilization during decomposition.[57] Meta-analyses indicate that organic systems generally accumulate higher soil organic matter (SOM) than conventional ones, with averages 20-30% greater in organic soils, improving water retention and structure.[58] Long-term studies, such as those spanning 20+ years, show enhanced microbial diversity and fertility indices, including higher enzyme activities and nutrient availability, particularly in red soils under organic management.[59] Yet, some medium-term comparisons find no significant SOM accumulation advantage over conventional systems, attributing variability to management intensity and initial soil conditions.[21] Challenges include slower nutrient release from organic sources, risking deficiencies in phosphorus or potassium if rotations lack diverse amendments, and potential pathogen persistence from raw manure, necessitating composting protocols.[52] Intensive organic practices can also reduce soil multifunctionality, mirroring conventional trends, due to tillage or over-reliance on few inputs.[60] Overall, while organic methods foster resilient soils via biological processes, fertility maintenance demands precise integration of practices to avoid yield gaps from uneven nutrient supply.[61]Crop Diversity and Rotation
Organic farming mandates crop rotation and diversification as core strategies to mimic natural ecological processes, thereby maintaining soil nutrient balances, disrupting pest and disease cycles, and fostering biodiversity in the absence of synthetic inputs. Rotations commonly sequence crops from distinct botanical families—such as legumes following cereals—to leverage complementary nutrient demands and symbiotic nitrogen fixation by plants like alfalfa or clover, which can contribute 50-200 kg of nitrogen per hectare annually in suitable conditions.[62] Intercropping and polycultures, including understory planting or relay cropping, further amplify diversity, reducing bare soil exposure and enhancing resource use efficiency; for example, combining cereals with legumes in the same field can increase land equivalent ratios by 10-30% compared to sole cropping.[63] These methods align with standards from bodies like the USDA National Organic Program, which require rotations to prevent nutrient depletion and soil erosion.[18] Empirical evidence demonstrates that diversified rotations in organic systems improve soil health metrics, including elevated organic matter levels (up to 20% increases over five years) and enhanced microbial diversity, which bolster nutrient cycling and aggregate stability.[64] A meta-analysis of global studies found that rotations with greater species diversity reduce soil bulk density by 5-10% and improve water infiltration rates, mitigating compaction and drought vulnerability more effectively than monocultures.[65] In cotton-based rotations under organic management in India, such practices shifted bacterial communities toward beneficial decomposers, correlating with higher enzyme activities for carbon and nitrogen mineralization.[66] Long-term field trials in North America further reveal that two- to four-year rotations yield 5-10% higher maize outputs on average versus continuous cropping, attributing gains to improved root exudates stimulating soil biota.[67] Yield stability benefits emerge prominently under variable conditions; diversified organic rotations decreased crop loss risks by enhancing resilience to poor weather, with equivalent yields rising up to 38% alongside 39% lower nitrous oxide emissions in diversified sequences versus simple ones.[68][69] Legume-inclusive rotations, per a global meta-analysis of 60 systems, amplified subsequent crop yields by an average 20%, though effects varied by sequence length and climate, underscoring causal links to residual nitrogen and reduced pathogen carryover.[70] However, transitions to complex rotations can temporarily depress yields by 10-20% due to learning curves and weed pressures, necessitating integrated cover cropping—such as rye or vetch—to suppress competitors and recycle nutrients.[71] Despite these advantages, systemic analyses indicate that while rotations mitigate organic yield gaps (typically 20-25% below conventional averages), they do not fully close them without supplemental fertility from manure or compost, as synthetic alternatives remain prohibited.[72] Farmer adoption surveys highlight knowledge barriers, with diversified systems demanding precise timing and monitoring to avoid nutrient imbalances, yet peer-reviewed longevity data affirm net sustainability gains in soil carbon sequestration and biodiversity indices over decades.[73]Pest, Weed, and Disease Control
Organic pest, weed, and disease control relies on preventive strategies, cultural practices, biological agents, and mechanical interventions, as synthetic chemical inputs are prohibited under standards like those of the USDA National Organic Program. These methods aim to maintain ecosystem balance and soil health to suppress populations naturally, though they often require greater labor and timing precision compared to conventional approaches.[74] Crop rotation disrupts pest life cycles by alternating host plants, reducing buildup of soil-borne pathogens and weeds adapted to monocultures, with studies showing rotations including legumes or cover crops can decrease disease incidence by up to 50% in vegetable systems.[75] Intercropping and polycultures enhance biodiversity, fostering natural enemies such as predatory insects that control herbivores, as evidenced by meta-analyses indicating organic systems support higher predator densities relative to pests in diversified landscapes.[76] For insect pests, biological control predominates through conservation of beneficial organisms like ladybugs, parasitic wasps, and birds, supplemented by releases of approved agents such as Trichogramma wasps for lepidopteran eggs. Physical barriers like row covers exclude pests, while sanitation—removing crop residues and trapping—prevents outbreaks; field trials demonstrate these tactics can reduce aphid and beetle infestations by 30-60% in cereals when combined with habitat provisioning via hedgerows.[77] Limited botanical extracts, such as neem oil or pyrethrum derived from chrysanthemums, provide contact control but degrade quickly and face restrictions on frequency to avoid harming non-target species. Effectiveness varies; organic fields often exhibit lower overall pest pressure due to reduced insecticide reliance promoting resilient natural enemy communities, yet outbreaks can occur without vigilant monitoring, contributing to yield variability of 10-20% below conventional in high-pressure scenarios.[78] [79] Weed suppression emphasizes competitive cropping and mechanical disruption over herbicides. Dense planting and timely sowing establish crop canopies that shade out weeds, while cover crops like rye or clover smother seedlings and add mulch upon termination, suppressing weed biomass by 40-80% in rotations per long-term trials.[80] Cultivation tools, including tine weeders and rotary hoes, uproot emerged weeds between rows, and mulching with straw or plastic (if biodegradable) conserves moisture while blocking light; flaming uses propane torches for pre-emergence control in row crops, achieving 70-90% efficacy on small weeds without soil residue.[81] These integrated tactics reduce weed seedbanks over time through prevention of seed set, but persistent perennials like bindweed demand repeated mechanical passes, increasing fuel and labor costs by 20-50% relative to herbicide-based systems.[82] Disease management centers on soil vitality and host resistance, with balanced nutrient cycling via compost and green manures enhancing plant vigor to withstand pathogens like Fusarium or Phytophthora. Resistant varieties, selected through breeding for traits like partial resistance to rusts or mildews, form a foundational defense, complemented by sanitation practices such as debris removal and tool disinfection to limit inoculum spread; epidemiological models indicate these reduce foliar disease severity by 25-50% in diversified organics.[83] Biological fungicides, including Trichoderma species for root rots or copper-based compounds (allowed in moderation), offer targeted suppression, though copper accumulation risks soil toxicity if overused. Organic systems experience higher disease incidence in humid climates due to absent prophylactics, with meta-reviews noting 10-30% greater losses in potatoes and tomatoes versus conventional, underscoring the need for site-specific adaptations like windbreaks to improve airflow and reduce humidity-driven epidemics.[75] Overall, while these methods foster long-term suppression through ecological processes, their success hinges on farmer expertise, with incomplete control occasionally necessitating crop sacrifice to preserve system integrity.[74]Livestock and Animal Husbandry
![Organic cattle in Ohio, United States][float-right] Organic livestock production mandates that animals be raised on certified organic feed free from synthetic pesticides, fertilizers, and genetically modified organisms, with at least 30% of dry matter intake from pasture during the grazing season for ruminants.[84] Prophylactic use of antibiotics and synthetic hormones is prohibited, requiring instead preventive health management practices such as vaccinations, nutritional strategies, and sanitation to maintain animal health.[85] Livestock must have year-round access to the outdoors, shelter, and conditions allowing exercise, comfort, and natural behaviors like rooting for pigs or perching for poultry, as updated in U.S. National Organic Program standards effective January 2, 2025.[86] Health challenges in organic systems arise primarily from mandatory outdoor access, which increases exposure to environmental pathogens, parasites, and weather stressors, leading to higher incidences of conditions like gastrointestinal parasites in ruminants and piglets, respiratory diseases in poultry, and mastitis in dairy cattle compared to conventional confinement systems.[87] Without routine antibiotics, organic producers rely on alternative treatments such as herbal remedies, homeopathy, or withholding treated animals from organic sale, which can result in elevated mortality rates—evident in higher chick losses in organic poultry flocks and piglet mortality from outdoor exposure.[88] [89] Comprehensive parasite control plans, including rotational grazing and tannin-rich forages, are required to mitigate these risks, though efficacy varies by management and climate.[85] Productivity metrics reveal trade-offs: a global meta-analysis found organic dairy cattle productivity 14% lower than conventional, attributed to reduced feed efficiency and health constraints, while organic poultry exhibits up to 89% lower feed conversion efficiency.[90] Animal welfare outcomes are mixed; organic systems score higher on behavioral freedom due to space allowances, but systematic reviews indicate no consistent superiority in overall health metrics, with higher disease prevalence offsetting gains from lower antibiotic residues in meat.[87] These factors underscore causal links between restricted inputs and heightened vulnerability to biological pressures, necessitating skilled husbandry to sustain viability.[91]Restrictions on Inputs and Technology
Organic farming standards impose strict prohibitions on synthetic inputs to preserve soil health, biodiversity, and ecosystem integrity, with allowances limited to approved natural or nonsynthetic substances. Under the U.S. Department of Agriculture's National Organic Program (NOP), synthetic fertilizers—such as ammonium nitrate or urea—are banned, as they disrupt microbial activity and nutrient cycling; instead, fertility derives from compost, manure, and cover crops.[16] Similarly, most synthetic pesticides, herbicides, and fungicides, including glyphosate and neonicotinoids, are prohibited unless explicitly listed as permissible on the National List after rigorous review for minimal environmental impact. In the European Union, Regulation (EU) 2018/848 mandates pre-approval by the European Commission for any plant protection products, excluding synthetic chemicals in favor of biological controls like beneficial insects or plant-based extracts.[92] Genetically modified organisms (GMOs) and genetic engineering technologies are universally excluded from organic production to avoid unintended ecological consequences and maintain varietal purity. USDA NOP rules explicitly bar seeds, plants, or animals derived from recombinant DNA techniques, ensuring no cross-contamination with conventional GMO crops during certification audits.[18] EU standards align, prohibiting transgenic varieties under the principle of precaution against biodiversity loss.[92] Sewage sludge, often laden with heavy metals and pathogens, is also forbidden as a soil amendment, with NOP designating it a prohibited substance due to risks of soil contamination.[93] Ionizing radiation for food preservation, seed treatment, or pest control is restricted, as it alters molecular structures without addressing root causes of spoilage or infestation. Both USDA and EU frameworks ban irradiation in organic processing to uphold nutritional integrity and consumer expectations of minimal intervention. For livestock, synthetic growth hormones like rBST are prohibited, and antibiotics are limited to therapeutic use under veterinary oversight, followed by mandatory withdrawal periods to prevent residues; preventive use or routine dosing violates standards aimed at fostering natural immunity. These restrictions extend to processing aids, excluding synthetic preservatives and solvents, though mechanical technologies like tillage equipment or precision farming tools are permitted if they do not introduce prohibited materials.[94]| Category | Prohibited Inputs/Technologies | Rationale and Standards |
|---|---|---|
| Fertilizers | Synthetic nitrogen (e.g., urea), phosphorus derivatives | Disrupts soil microbiome; USDA NOP National List exclusion |
| Pesticides | Synthetic insecticides (e.g., organophosphates), herbicides (e.g., atrazine) | Persistence in environment; EU pre-approval requirement[92] |
| Biotechnology | GMOs, gene editing via CRISPR for crops/livestock | Potential gene flow risks; universal ban in organic codes[18] |
| Waste/Amendments | Sewage sludge, municipal biosolids | Contaminant accumulation; NOP prohibition[93] |
| Preservation | Ionizing radiation, irradiation | Molecular alteration; disallowed in processing |
| Animal Inputs | Hormones (e.g., rBGH), routine antibiotics | Promotes resistance, unnatural growth; therapeutic only[94] |
Certification and Standards
International and National Frameworks
The International Federation of Organic Agriculture Movements (IFOAM), established in 1972, develops the IFOAM Norms, which serve as a foundational international reference for organic standards, emphasizing principles of health, ecology, fairness, and care in production and processing.[95] These norms influence global practices but are not legally binding, instead guiding national regulations and certification bodies.[96] Complementing IFOAM, the Codex Alimentarius Commission, a joint FAO/WHO body, adopted Guidelines for the Production, Processing, Labelling and Marketing of Organically Produced Foods in 1999, revised in subsequent years, defining organic agriculture as a holistic system that promotes agro-ecosystem health without synthetic inputs like pesticides or GMOs.[97] These guidelines facilitate international trade by providing harmonized criteria, though adoption remains voluntary across countries.[98] In the European Union, organic production is governed by Regulation (EU) 2018/848, adopted on 30 May 2018 and fully applicable from 1 January 2022, which sets uniform rules for production, labelling, and control of organic products, prohibiting synthetic fertilizers, GMOs, and certain animal treatments while mandating traceability and residue limits.[99] The regulation applies to all EU member states and third-country imports under equivalence, with oversight by accredited control bodies.[100] The United States' framework centers on the USDA's National Organic Program (NOP), authorized by the Organic Foods Production Act of 1990 and implemented with standards effective 21 October 2002 under 7 CFR Part 205, requiring certified operations to avoid prohibited substances like synthetic pesticides and hormones while allowing limited exceptions via the National List.[18] Enforcement involves accredited certifiers and annual inspections, with the program covering crops, livestock, and processed goods sold domestically or exported.[101] Other nations maintain distinct standards: Australia's organic sector operates under the Australian Standard for Organic and Biodynamic Products (AS 6000 series), updated periodically and administered through private certifiers accredited by the Department of Agriculture, emphasizing soil health and biodiversity without national prohibition on certain inputs varying by certifier.[102] Canada's organic regime, established in 2009, aligns with international equivalency arrangements and prohibits GMOs and synthetic inputs via the Safe Food for Canadians Regulations, with certification by bodies recognized under the Canada Organic Regime.[103] Japan's Japanese Agricultural Standards (JAS) for organics, introduced in 2001, cover plant products, processed foods, and feeds, requiring soil-based production without chemical fertilizers or pesticides and certification by registered bodies.[104] Equivalency agreements, such as those between Canada-Japan since 2014 or USDA recognitions with partners like Taiwan, enable cross-border trade while addressing variances in stringency.[105][106]Certification Processes and Compliance
Organic certification involves third-party verification that production and handling practices comply with established standards prohibiting synthetic pesticides, fertilizers, genetically modified organisms, and certain other inputs, while requiring specific methods for soil management, pest control, and animal welfare. Certifying agents, accredited by national authorities such as the USDA's National Organic Program (NOP) or equivalent bodies in other countries, conduct the process, which typically spans 3 to 6 months for initial applicants and requires annual renewals thereafter.[107][108] The process begins with producers developing an Organic System Plan (OSP) detailing practices, inputs, and compliance measures, followed by submission to an accredited certifier. This includes documentation of land history, ensuring no prohibited substances have been applied for at least three years prior to certification for crop production. An on-site inspection then verifies adherence, sampling soils, water, and products for residues if warranted, and reviewing records for traceability. Certification is granted if no major non-compliances are found, with minor issues requiring corrective action plans; denial or revocation occurs for unresolved violations.[109][17][107] Compliance demands rigorous record-keeping of all inputs, sales, and practices to enable traceback, with annual inspections and periodic unannounced audits mandated under frameworks like the USDA NOP and EU Regulation 2018/848, which entered full effect in 2022. In the EU, operators must notify authorities annually, undergo risk-based controls including residue testing, and adhere to uniform rules across production, processing, and trade, with group certification allowed for smallholders under strict internal controls. Internationally, the IFOAM Norms underpin many standards, emphasizing holistic production and prohibiting practices like irradiation or sewage sludge use, while allowing equivalence recognition for cross-border trade.[110][95][111] Enforcement challenges persist, particularly with imports, where fraud—such as mislabeling conventional grains as organic amid supply shortages—has been documented, prompting USDA enhancements like the 2023 Strengthening Organic Enforcement rule for better supply chain oversight and residue sampling. Critics note that while certification verifies claims, limited resources and reliance on self-reported data can enable undetected non-compliance, with studies identifying vulnerabilities in credence goods like organics due to asymmetric information between producers and consumers. Recent EU updates from 2025 tighten import rigor, excluding non-compliant products to curb fraud, though implementation strains smaller operators.[112][113][114]Productivity and Yields
Meta-Analyses and Long-Term Studies
A 2012 meta-analysis of 362 comparisons across global organic and conventional systems found that organic crop yields averaged 19% lower than conventional yields, with greater gaps for cereals (26% lower) and legumes (similar yields), influenced by factors such as irrigation availability and nitrogen-fixing crops that narrowed the gap to under 10% in some cases.[4] A 2023 global meta-analysis of 1,414 paired observations confirmed an average organic yield penalty of 18.4%, with larger deficits in warm temperate climates and for high-input conventional systems, attributing differences to constraints on synthetic fertilizers and pesticides in organic methods.[115] These yield gaps persist despite organic practices' emphasis on soil health, as synthetic inputs in conventional farming enable higher nutrient and pest control efficiency under optimized conditions.[4] Yield stability, measured by interannual variability, is also lower in organic systems; a 2018 meta-analysis of 90 studies showed organic agriculture exhibited 15% less temporal stability than conventional, due to greater susceptibility to weather fluctuations without chemical buffers, though conservation tillage in conventional systems improved stability comparably to organic in some metrics.[72] Crop diversification in organic farming can mitigate the yield gap by up to 9%, per a 2015 analysis, by enhancing resilience through polycultures and rotations that reduce pest pressure and improve nutrient cycling, yet overall gaps remain as diversification benefits conventional systems similarly without eliminating organic's inherent limitations.[116] The Rodale Institute's Farming Systems Trial, initiated in 1981 in Pennsylvania, USA, provides one of the longest continuous comparisons, tracking corn and soybean yields across organic (manure-based), conventional (synthetic inputs), and organic transitional systems over 40 years. In average weather years, organic yields reached parity with conventional no-till systems for soybeans but lagged 10-15% for corn; however, during droughts like 2012, organic corn yields exceeded conventional by 31%, attributed to deeper root systems and higher soil organic matter improving water retention.[117] Critics note the trial's location-specific conditions (e.g., adequate rainfall) and Rodale's advocacy orientation may overestimate organic performance, as broader metas show consistent gaps, and the study lacks replication across diverse agroecologies.[118] Other long-term European trials, such as the Danish DOK system (1985-present), report organic yields 20-40% below conventional for wheat and potatoes, reinforcing meta-analytic trends while highlighting organic's potential soil carbon gains without proportional yield equivalence.[119]Yield Gaps and Variability Factors
Meta-analyses of global data indicate that organic crop yields are typically 19-25% lower than conventional yields on average, with variations by crop type and region.[4] For cereals, the gap often reaches 26%, while for legumes it is smaller at around 10%.[4] A 2023 meta-analysis across climate types confirmed an average organic yield reduction of 18.4%, with larger disparities in warm temperate subtypes where synthetic inputs provide greater advantages in controlling pests and weeds.[5] Yield variability is generally higher in organic systems compared to conventional ones, with organic agriculture exhibiting 15% lower temporal stability per unit yield.[72] This increased variability stems from organic farming's prohibition on synthetic fertilizers and pesticides, leading to greater susceptibility to weather fluctuations, nutrient deficiencies, and biotic stresses such as pests and weeds.[120] In contrast, conventional systems' reliance on external inputs buffers against such shocks, resulting in more consistent outputs.[72] Key factors influencing the yield gap and variability include crop diversification and rotation practices, which can narrow the difference to as low as 9% in optimized organic systems by enhancing soil health and natural pest control.[116] Climate conditions exacerbate gaps in organic farming during droughts or high pest pressure, though some long-term trials suggest organic resilience in extreme weather due to improved soil organic matter.[5] Soil fertility management and initial transition periods also contribute, as organic fields may experience temporary yield penalties before ecological balance is achieved.[121] Management expertise plays a critical role, with well-implemented organic practices reducing variability through biodiversity promotion, but overall empirical evidence underscores persistent productivity trade-offs.[4]Impacts on Global Food Security
Organic farming systems typically produce yields 19-25% lower than conventional systems across global meta-analyses, limiting their capacity to contribute equivalently to total food production on the same land area.[122] This yield gap arises primarily from restrictions on synthetic fertilizers and pesticides, which constrain nutrient availability and pest control in organic practices. In high-input conventional environments, the disparity can exceed 40%, while diversification practices like crop rotations and multi-cropping in organic systems may narrow it to 8-9%.[116] However, even optimized organic approaches rarely match conventional outputs, particularly for staple grains essential to caloric security.[5] The lower productivity of organic farming implies that scaling it globally to replace conventional methods would necessitate 20-25% more cropland to maintain current production levels, exacerbating land scarcity and competition with natural ecosystems.[72] Foresight modeling indicates that widespread adoption could reduce global food production by approximately 40%, with nitrogen cycling limitations amplifying yield penalties to 44% in simulations.[123] Such expansion risks increased deforestation and habitat loss, as arable land expansion historically contributes to biodiversity decline, without proportionally enhancing food availability.[124] In regions with marginal soils or developing economies, where yield gaps are widest—up to 43%—organic transitions have been linked to reduced household food security, including lower dietary diversity and nutrient intake.[125][126] Yield stability in organic systems further compounds risks to food security, with relative stability (per unit yield) 15% lower than conventional due to greater variability from biotic stresses and nutrient fluctuations.[72] This heightened vulnerability to droughts, pests, and climate variability could amplify shortages during shocks, undermining supply reliability for a projected global population of 10 billion by 2050.[72] While organic practices enhance long-term soil health in some contexts, empirical evidence shows no compensatory absolute stability gains, and global caloric demands—dominated by cereals—remain unmet without conventional efficiencies.[72] Offsetting these deficits would require drastic dietary shifts toward plant-based foods or yield-closing innovations, neither of which current data substantiates as scalable without hybrid approaches.[123] In summary, while organic farming supports localized resilience and environmental goals, its systemic yield penalties and stability deficits pose substantive barriers to global food security if pursued as a dominant paradigm, prioritizing sustainability over volume in resource-constrained scenarios.[123] Peer-reviewed assessments consistently affirm that conventional agriculture's higher output remains indispensable for averting hunger, particularly in staple crop production where organic alternatives falter.[122][72]Economic Aspects
Production Costs and Profitability
Organic farming generally entails higher per-unit production costs compared to conventional methods, driven primarily by elevated labor demands for tasks such as mechanical weeding, pest management, and soil cultivation without synthetic aids, as well as lower yields that spread fixed costs over reduced output.[127][128] U.S. Department of Agriculture data indicate that organic farms average higher total economic costs than conventional counterparts, with labor expenses often 7-13% greater globally due to manual-intensive practices.[128][129] While organic systems may reduce variable input costs—such as for chemical fertilizers and pesticides, which are prohibited—these savings are frequently outweighed by the need for alternative biological controls, cover cropping, and compliance with certification standards.[130] For instance, a Purdue University analysis of crop rotations found labor costs notably higher in organic systems, contributing to overall expenses that challenge scalability on larger operations.[131] Profitability varies by crop, region, and market conditions, but organic premiums—typically 20-100% above conventional prices—can compensate for cost disadvantages and yield gaps of 10-25%, enabling net returns that are sometimes comparable or superior.[129][128] A 2024 University of Illinois study reported average net returns to land $115 per acre higher for organic versus conventional crops across several enterprises, with premiums offsetting lower productivity.[132] USDA assessments of certified organic field crops like corn, soybeans, and wheat highlight significant profit potential from premiums, though transition periods (often 3 years) impose upfront costs without revenue, and risks from pests or weather are amplified without synthetic interventions.[133] Globally, a meta-analysis found organic agriculture more financially competitive despite yield reductions, attributing this to lower external input dependency, though tropical systems showed mixed gross margins where organic and conventional were often equivalent.[128][134]| Factor | Organic vs. Conventional | Key Data Source |
|---|---|---|
| Labor Costs | 7-13% higher in organic | Global meta-analysis (2015)[128] |
| Yield Levels | 77-90% of conventional | Recent meta-analyses (2019-2023)[135][136] |
| Net Returns (U.S. field crops) | Often higher by $100-350/acre due to premiums | Farm-level studies (2020-2024)[132][133] |
Market Pricing and Consumer Demand
Organic foods typically command a substantial price premium over conventional equivalents, with empirical studies reporting ranges from 35% to over 270% across product categories such as processed tomatoes, cereals, dairy, fruits, and vegetables.[138] In the United States, organic prices have consistently exceeded conventional counterparts over the past decade, though the gap has narrowed in select produce items like lettuce and apples between 2016 and 2023 due to increased organic supply and production efficiencies.[139] [140] These premiums reflect disparities in supply chains, certification requirements, and yield limitations, which elevate per-unit costs despite consumer willingness to absorb them.[141] Market data underscores robust consumer demand sustaining these elevated prices, with U.S. organic sales totaling $71.6 billion in 2024—a 5.2% increase that outpaced conventional food growth by more than double.[11] Globally, the organic food sector was valued at approximately $199 billion in 2024 and is forecasted to expand to $529 billion by 2032, driven by rising preferences in developed markets for products perceived as healthier and more sustainable.[142] Demand growth has been particularly strong in categories like meat, poultry, and yogurt, with 16.1% and 10.5% sales increases respectively in 2024, reflecting targeted consumer segments prioritizing these attributes.[143] Surveys reveal consumers' average willingness to pay a 60% premium for organic labeling worldwide, based on a meta-analysis of studies through 2023, though this varies by product and demographics such as income and education levels.[144] In emerging economies, premiums as low as 20% for staples like rice have been observed, influenced by health consciousness and prior purchase experience.[145] However, price sensitivity limits broader adoption, as 72% of U.S. adults factor the cost differential into purchasing decisions, often capping premiums at 10-25% for everyday items.[146] This tension highlights demand's elasticity amid economic pressures, with higher-income and educated cohorts showing greater tolerance for premiums tied to subjective norms around quality and ethics.[147]Role of Subsidies and Government Policies
Government policies worldwide have played a pivotal role in promoting organic farming through direct subsidies, transition incentives, and regulatory frameworks, often prioritizing environmental goals over yield maximization. In the European Union, the Common Agricultural Policy (CAP) allocates funds via eco-schemes that support organic conversion, with all member states required to subsidize transitions and many offering premiums up to double the standard rates for organic practices as of 2023.[148] [149] The EU's Organic Action Plan, launched in 2021, further drives investment toward a 25% organic land target by 2030 under the Green Deal's Farm-to-Fork strategy, combining subsidies with promotion funding for organic products.[150] [151] In the United States, the USDA's National Institute of Food and Agriculture (NIFA) administers the Organic Agriculture Program, providing grants for research, education, and extension services, with funding supporting organic adoption since the program's establishment.[152] These policies have contributed to steady growth, such as the EU's organic agricultural area rising continuously since 2012, covering a notable share of utilized agricultural area (UAA) by 2024.[153] Subsidies directly influence adoption rates by offsetting the higher production costs and yield risks associated with organic methods during the conversion period, which typically lasts 3-5 years. Empirical studies indicate that conversion subsidies have driven increases in organic acreage, with government assistance enabling farmers to cover transitional losses that would otherwise deter participation; without such support, organic expansion would be substantially limited.[154] [155] Evolutionary game models demonstrate that targeted subsidies stabilize farmer strategies toward organic production, particularly when coupled with consumer demand, leading to higher equilibrium adoption levels under policy intervention.[156] For instance, EU subsidies have correlated with rapid sector development, where policy frameworks provide both financial incentives and market advocacy, amplifying organic farmland growth beyond what market forces alone could achieve.[157] In the US, NIFA funding has facilitated technical support, indirectly boosting certified organic operations from approximately 14,000 in 2008 to over 20,000 by 2021.[152] Critics argue that these subsidies distort markets and encourage inefficient land use, given organic farming's persistent yield gaps—often 20-25% lower than conventional methods—potentially straining global food supplies without proportional environmental gains.[158] Instances of abuse, such as Greece's 2025 organic boom attributed to generous payouts rather than genuine practice shifts, have raised concerns over "subsidy scams" where farmers register land or livestock as organic primarily for financial gain, undermining policy integrity.[159] While subsidies reduce organic production costs and enhance research, they may favor larger operations and overlook opportunity costs, as public funds redirected from high-yield conventional agriculture could better address food security amid population growth.[158] [160] Policy effectiveness varies, with EU agri-environmental measures showing mixed results in verifiable biodiversity or emissions reductions, suggesting a need for more targeted, outcome-based incentives over blanket support.[161]Environmental Impacts
Resource Efficiency and Land Use
Organic farming typically exhibits lower yields than conventional agriculture, resulting in reduced land use efficiency when measured per unit of output. A 2023 meta-analysis of 786 pairwise observations from 105 studies found that organic yields are 18.4% lower than conventional yields across various climate types (relative risk = 0.83, 95% CI: 0.77–0.89).[5] Earlier meta-analyses report similar gaps, ranging from 19.2% to 25% lower yields for organic systems under experimental and field conditions.[19][8] This yield disparity implies that organic production requires approximately 22–33% more land to achieve equivalent food output, as calculated from the inverse of yield ratios.[162] The expanded land requirements of organic farming raise concerns about scalability and environmental trade-offs, particularly in the context of global food demand. To match conventional output, widespread adoption of organic methods could necessitate conversion of natural habitats, potentially increasing deforestation and greenhouse gas emissions from land clearance.[19] Conventional systems, by contrast, enable higher productivity on existing farmland, sparing wilderness areas—a factor highlighted in assessments of agricultural intensification.[8] While organic proponents argue that improved soil health may narrow yield gaps over decades, empirical long-term data do not consistently support equivalent land-sparing potential.[162] Regarding other resources, organic farming shows mixed efficiency profiles. Energy use is generally lower in organic systems per hectare, primarily due to avoidance of synthetic nitrogen fertilizers produced via the energy-intensive Haber-Bosch process, though exceptions occur for vegetables requiring alternative weed control methods.[8][162] However, when normalized per unit yield, organic energy demands may rise owing to the land expansion effect. Water efficiency varies by context; organic soils often retain more moisture, enhancing drought resilience, yet total irrigation needs can increase with lower yields and reliance on less efficient natural nutrient cycling.[19] Overall, conventional agriculture tends to outperform organic on aggregate resource metrics tied to output, including land and water pollution minimization.[8]Effects on Biodiversity and Soil Health
Organic farming typically enhances on-farm biodiversity relative to conventional agriculture due to the absence of synthetic pesticides and greater reliance on natural processes. A 2014 meta-analysis of 66 studies across Europe found that organic farms support 34% higher species richness on average, with effects varying by taxon: strongest for plants (18%) and birds (26%), moderate for bees and butterflies, and weaker for soil organisms.[7] This biodiversity boost stems from reduced chemical inputs allowing greater weed, insect, and microbe proliferation, though benefits diminish under high land-use intensity mimicking conventional practices.[163] A 2021 multi-community analysis confirmed organic systems increase organism abundance by 50% and species richness by 30%, particularly for arthropods and multitrophic groups, fostering ecosystem services like pest control.[164] However, these gains are site-specific and do not account for expanded land requirements from organic's 20-25% average yield gaps, which could pressure off-farm habitats.[72] Regarding soil health, long-term organic practices improve key indicators such as organic matter content, structure, and microbial diversity through organic amendments like compost and manure, which enhance carbon sequestration and nutrient cycling. A 2021 French study of paired organic and conventional fields over decades reported higher soil microbial biomass and enzyme activities in organic systems, correlating with better disease suppressiveness and reduced erosion.[165] Recent 2025 research on red soils in China demonstrated that 10+ years of organic farming significantly elevated soil quality indices, including aggregate stability and bacterial diversity, outperforming shorter-term conversions.[59] Similarly, a 2025 global assessment found organic management boosts soil organic matter more via health-focused practices like cover cropping than edaphic factors alone, though intensive organic tillage can counteract gains by accelerating decomposition.[166] Despite these advantages, a 2025 study across European arable soils noted that escalating management intensity in organic fields—such as frequent mechanical weeding—erodes multifunctionality, including nutrient retention and water holding capacity, underscoring the need for low-disturbance variants.[60] Overall, while organic farming causally promotes soil biological activity via input quality, sustained benefits hinge on minimizing mechanical interventions to preserve physical integrity.[167]Emissions, Pollution, and Nutrient Cycling
Organic farming systems typically exhibit lower nitrous oxide (N2O) emissions per unit land area compared to conventional systems, as they avoid synthetic nitrogen fertilizers, which are a primary source of N2O through denitrification processes.[168] However, reliance on livestock manure for fertilization increases methane (CH4) emissions from enteric fermentation and manure management, potentially offsetting these gains; a 2024 study found that organic cropping with reduced external inputs still results in lower overall climate impact per hectare due to minimized synthetic inputs.[169] When assessed per unit of product yield, organic systems often show higher greenhouse gas (GHG) emissions intensity, as yield gaps of approximately 18-20% necessitate greater land use to achieve equivalent output.[5] [168] Ammonia (NH3) emissions pose a notable challenge in organic agriculture, stemming primarily from manure application and composting, which account for significant volatile nitrogen losses. Agriculture contributes over 80% of global NH3 emissions, with organic systems' dependence on organic amendments exacerbating this in livestock-integrated farms; for instance, manure management in organic dairy operations can lead to higher NH3 volatilization rates during storage and field application compared to synthetic fertilizers in conventional setups.[170] [171] These emissions contribute to atmospheric deposition, fine particulate matter formation, and indirect N2O production, with composting processes further releasing NH3 that impacts air quality.[172] Pollution from nutrient runoff and leaching presents mixed outcomes. Organic practices reduce pesticide-related water contamination due to prohibition of synthetic chemicals, but nitrate leaching can be comparable or higher per unit crop produced, as lower nitrogen use efficiency in manure-based systems leads to greater losses; meta-analyses indicate organic sources result in 16% higher nitrate-N losses on average, though some interventions like organic inputs can mitigate leaching by 15% per area.[173] [174] Intensive organic greenhouse farming has been observed to cause substantial nitrate pollution to groundwater, with concentrations exceeding regulatory limits in monitored subsurface flows.[175] Nutrient cycling in organic farming emphasizes closed-loop systems via crop rotations, legumes, and manure recycling to enhance soil organic matter and microbial activity, potentially improving long-term fertility.[176] However, these systems often exhibit lower nutrient use efficiency, requiring higher gross inputs to compensate for losses via leaching, volatilization, and denitrification, which can disrupt balances and necessitate off-farm imports; per-unit-product analyses reveal greater nutrient export risks compared to conventional precision fertilization.[177] While organic amendments boost soil carbon pools, they may reduce overall soil organic carbon stability, limiting resilience to perturbations.[176]Health, Nutrition, and Safety
Pesticide Residues and Exposure Risks
Organic farming standards, such as those set by the USDA National Organic Program, prohibit synthetic pesticides and restrict applications to naturally derived substances like copper compounds, pyrethrins, and Bacillus thuringiensis, aiming to minimize chemical residues in crops.[18] Empirical analyses consistently show that organic produce exhibits substantially lower detectable residues of synthetic pesticides compared to conventional counterparts; for instance, a 2012 systematic review of 240 studies found organic fruits and vegetables were 30% less likely to contain pesticide residues, with concentrations four to five times lower when detected. Similarly, a 2014 meta-analysis reported a four-fold reduction in the incidence of pesticide residues exceeding maximum residue limits (MRLs) in organic crops. Despite these reductions, organic produce is not residue-free, as approved natural pesticides can persist, and cross-contamination from adjacent conventional fields via drift occurs in up to 10-20% of samples in some regions.[178] Natural pesticides often display higher acute toxicity profiles than many synthetics; for example, rotenone (historically used in organic systems) has an oral LD50 in mammals comparable to or exceeding that of some organophosphates, potentially posing risks to non-target organisms and, at residue levels, uncertain human health effects.[179] Copper-based fungicides, widely applied in organic viticulture and orchards, accumulate in soils and exceed environmental thresholds in intensively farmed areas, with bioaccumulation linked to oxidative stress in aquatic life and potential dietary exposure concerns.[179] Consumer exposure risks from pesticide residues in organic foods remain low overall, as USDA Pesticide Data Program (PDP) monitoring from 2023 confirmed that over 99% of all domestic food samples (including organics) complied with EPA tolerances, with 38.8% showing no detectable residues.[180] However, PDP data indicate synthetic residues are rarer in organic samples, though natural alternatives like sulfur and neem extracts may contribute to trace exposures not always captured in standard testing protocols focused on synthetics. Health outcome studies, including a 2017 review, find associations between organic consumption and reduced urinary pesticide metabolites, but causal links to improved health—such as lower cancer or neurodevelopmental risks—are not robustly established, given that conventional residue levels are calibrated below no-observed-adverse-effect levels (NOAELs) by regulatory bodies.[181] Critics note that emphasizing organic's residue advantages overlooks equivalent safety margins in conventional systems, where risk assessments incorporate chronic low-dose epidemiology. For agricultural workers, organic practices correlate with reduced dermal and inhalation exposure; a 2025 study using silicone wristbands on farmers documented 50-70% lower pesticide biomarkers in organic operators versus conventional, attributed to fewer applications and avoidance of high-volatility synthetics.[182] Nonetheless, manual handling of natural pesticides, often less refined, elevates risks of irritant effects or allergic responses in the absence of inert stabilizers common in synthetics.[179] Regulatory tolerances for natural pesticides are generally harmonized with synthetics under frameworks like EPA's, but gaps in long-term toxicity data for some biopesticides persist, prompting calls for enhanced monitoring.[183]Nutritional Profiles and Claims
Organic farming advocates frequently assert that foods produced under organic standards possess enhanced nutritional value, citing factors such as improved soil microbial activity, diverse crop rotations, and exclusion of synthetic fertilizers and pesticides as contributors to higher concentrations of vitamins, minerals, antioxidants, and beneficial fatty acids.[184] These claims position organic products as inherently superior for human health, though empirical assessments reveal a more nuanced picture dominated by modest, inconsistent differences rather than wholesale superiority. Systematic reviews of crop nutrient content indicate that organic produce often exhibits elevated levels of certain phytochemicals and antioxidants, such as polyphenols and flavonoids, with a 2014 meta-analysis of 343 studies reporting up to 69% higher concentrations in organic variants compared to conventional ones.[185] Similarly, organic crops tend to contain lower cadmium levels (approximately 48% less), a heavy metal accumulated via phosphate fertilizers common in conventional systems.[184] However, macronutrients like proteins, carbohydrates, and fats show negligible differences, and vitamins such as C and E display variable elevations not consistently exceeding 20-30% across studies.[186] A 2023 analysis of 40 peer-reviewed comparisons found organic foods presented a "slightly improved" micronutrient profile in some cases, but many variances lacked statistical significance due to confounding factors like soil type, climate, and harvest timing.[187] In animal-derived products, organic dairy and meat may offer advantages in fatty acid composition owing to mandatory pasture access and forage-based feeds, which boost omega-3 polyunsaturated fatty acids by 50-60% relative to grain-fed conventional counterparts.[188] Organic milk, for instance, contains higher conjugated linoleic acid (CLA) and vaccenic acid, linked in observational data to potential anti-inflammatory effects.[189] Protein content, however, can be marginally lower in organic meat due to slower growth rates without synthetic hormones or high-protein concentrates.[9] A 2012 Stanford meta-analysis synthesizing 240 studies underscored the absence of robust evidence for overall nutritional superiority, noting that while organic produce had 30% lower pesticide residues, nutrient profiles were broadly comparable.[188] More recent evaluations, including a 2024 systematic review of fruit pairs, reported organic superiority in micronutrients for about 75% of comparisons but emphasized that conventional options prevailed in 25%, with no category-wide dominance.[190] These findings align with critiques that organic premiums—often 20-100% higher—are not justified primarily on nutritional grounds, as variations attributable to farming method are dwarfed by genetic, environmental, and post-harvest influences on nutrient density.[9] Long-term health outcome trials remain scarce, with proxy indicators like reduced eczema risk in infants from organic dairy consumption emerging from cohort data but requiring causal validation.[189]| Nutrient Category | Organic vs. Conventional Trends | Key Evidence |
|---|---|---|
| Antioxidants (e.g., polyphenols) | Often 19-69% higher in organic crops | 2014 meta-analysis of 343 studies[185] |
| Omega-3 Fatty Acids | 50-60% higher in organic dairy/meat | 2012 Stanford review; pasture-based feeding effects[188] |
| Macronutrients (protein, carbs, fats) | Negligible differences | Multiple systematic reviews (2012-2024)[186][9] |
| Minerals (e.g., cadmium) | 48% lower cadmium in organic | 2014 crop meta-analysis[184] |
| Vitamins (C, E) | Variable, modest increases (up to 30%) in some produce | Inconsistent across 2023-2024 analyses[187][190] |
Microbial and Contaminant Hazards
Organic farming's dependence on untreated or partially treated animal manure and compost as fertilizers introduces elevated risks of microbial pathogens, including Escherichia coli, Salmonella spp., and other enteric bacteria, which can contaminate soil, irrigation water, and crops through fecal matter persistence.[191] [192] These materials, derived from livestock operations, harbor viable pathogens that survive in soil for months, with survival influenced by factors like temperature, moisture, and organic matter content; incomplete composting fails to achieve the sustained high temperatures (above 55°C for several days) required for substantial pathogen die-off under standards like those from the U.S. Composting Council.[191] [193] In contrast, conventional farming's use of synthetic fertilizers minimizes such introductions, though cross-contamination risks exist from shared environmental sources.[194] Empirical data from foodborne illness surveillance underscores these hazards: from 1992 to 2014, 18 outbreaks in the United States were linked to organic foods, causing 779 illnesses, 258 hospitalizations, and 3 deaths, with E. coli and Salmonella as predominant agents, often traced to produce like sprouts and leafy greens grown using manure-based amendments.[195] A 2024 multistate E. coli O121:H19 outbreak, affecting 48 individuals across 12 states with 20 hospitalizations and 1 death, was attributed to bagged organic carrots from Grimmway Farms, highlighting ongoing vulnerabilities in supply chains despite recall measures.[196] [197] Recent analyses indicate a rising proportion of U.S. produce-related outbreaks tied to organic systems, potentially due to higher pathogen loads in manure-amended fields and challenges in scaling hygienic practices.[194] [198] Regarding contaminants, organic soils and crops exhibit lower cadmium concentrations—up to 48% reduced in some meta-analyses—owing to prohibitions on sewage sludge and reduced reliance on phosphate rock fertilizers high in trace metals, though natural soil variability and legacy pollution pose baseline risks.[199] Heavy metal levels, including lead and zinc, are generally 10-74% lower in long-term organic managed fields compared to conventional counterparts, as confirmed by assessments of European and U.S. farmlands, attributing this to enhanced soil microbial immobilization and avoidance of industrial inputs.[200] [201] However, improper sourcing of organic amendments, such as compost from contaminated urban waste, can introduce arsenic or other metals, necessitating rigorous certification to mitigate uptake into edible crops.[202] Overall, while microbial hazards predominate due to fertilization practices, contaminant profiles favor organic systems under verified protocols.[199]Controversies and Scientific Debates
Empirical Challenges to Superiority Claims
Organic farming proponents often claim superiority over conventional methods in yields, nutritional quality, and environmental outcomes, but empirical evidence from meta-analyses challenges these assertions. A 2012 meta-analysis of 362 comparisons across global studies found that organic crop yields averaged only 80% of conventional yields, with gaps widening to 25% or more for cereals under temperate conditions.[4] More recent reviews confirm this disparity, reporting organic yields 18.4% lower overall, particularly in warmer temperate regions where nitrogen limitations and pest pressures exacerbate deficits.[5] These yield penalties imply that scaling organic production to meet global food demands would require 20-50% more farmland, potentially driving habitat conversion and undermining sustainability claims.[8] Nutritional superiority is similarly unsubstantiated. A 2024 comprehensive analysis of organic versus conventional fruits, vegetables, and grains concluded no significant differences in nutrient levels, contradicting earlier selective studies emphasizing antioxidants.[9] The 2012 Stanford systematic review of 240 studies reinforced this, finding negligible variations in vitamins, minerals, or macronutrients, with organic foods showing higher omega-3 content in some meats but no overall health benefits.[188] Claims of reduced pesticide residues exist, yet organic systems rely on natural pesticides like copper compounds, which persist in soil and may pose equivalent or greater toxicity risks without synthetic alternatives' precision targeting.[203] Environmentally, organic methods do not consistently outperform conventional ones when accounting for total impacts. While per-hectare metrics may show lower chemical inputs, yield gaps necessitate expanded cultivation, elevating global land use, eutrophication from manure runoff, and greenhouse gas emissions per unit of food produced.[8] A 2018 review highlighted organic's 15% lower yield stability, increasing vulnerability to climate variability and amplifying food insecurity risks.[72] Biodiversity benefits are context-dependent and often overstated; long-term trials indicate conventional integrated pest management can match or exceed organic outcomes without yield trade-offs.[204] These findings underscore that superiority narratives overlook trade-offs, as conventional precision agriculture—via targeted fertilizers and biotech—often achieves comparable or better resource efficiency at scale.[205]Scalability and Sustainability Critiques
Organic farming systems typically achieve lower crop yields compared to conventional methods, with meta-analyses indicating an average yield gap of 19-25%. [4] [5] This disparity arises from restrictions on synthetic fertilizers and pesticides, which limit nutrient availability and pest control, resulting in reduced productivity per unit of land. [4] Scaling organic production to meet global food demands would therefore require substantially more arable land—potentially 20-50% additional acreage depending on crop type—to match conventional output levels, exacerbating pressures on finite land resources. [8] [206] The lower yield stability in organic systems further compounds scalability challenges, as organic yields exhibit 15% greater temporal variability than conventional ones, increasing vulnerability to weather fluctuations and pests. [72] Projections suggest that converting all global agriculture to organic methods could reduce food production by up to 20%, insufficient to sustain current population levels without dietary shifts or land expansion into ecosystems like forests, which would offset environmental gains through habitat loss and elevated emissions. [207] [123] Critics argue this inefficiency undermines organic farming's viability as a widespread replacement for conventional agriculture, particularly in high-demand staple crops like grains and tubers where yield penalties are most pronounced. [208] On sustainability grounds, organic farming's higher land requirements lead to greater overall environmental footprints when measured per unit of food produced. [13] Greenhouse gas emissions, including nitrous oxide from manure-based fertilization, are often higher per kilogram of yield in organic systems due to the yield gap, despite potentially lower emissions per hectare. [209] [210] For instance, organic potato production emits more GHGs per unit product owing to expanded land needs. [209] Resource efficiency critiques extend to water and energy use, where organic practices demand more inputs per output, challenging claims of inherent sustainability superiority. [8] These factors highlight a causal tension: while organic methods may enhance local soil metrics, their scaled application risks amplifying global pressures on land, biodiversity, and climate through inefficient production. [211]Policy Distortions and Economic Realities
Government subsidies for organic agriculture, particularly in the European Union and the United States, often prioritize environmental and health objectives over productivity metrics, leading to market distortions that favor lower-yield systems. In the EU, policies under the Common Agricultural Policy allocate direct payments and conversion incentives, which have expanded organic farmland to approximately 10% of total agricultural area by 2021, yet these supports can encourage short-term shifts without ensuring long-term viability or efficiency gains.[212] Such incentives distort resource allocation by subsidizing practices with yields 18-20% below conventional levels on average, potentially inflating land demands and undermining food output per subsidized euro.[5] [213] Economic analyses reveal that organic farming's higher production costs—stemming from labor-intensive weed control, manure-based fertilization, and pest management—typically exceed those of conventional methods by 20-30%, even as price premiums compensate for some farmers. In the US, USDA data from field crop surveys indicate organic corn and soybean systems incur elevated variable costs and achieve net returns only through sustained premiums of 20-50% above conventional prices, rendering scalability dependent on consumer willingness to pay rather than inherent efficiency.[214] Without these premiums or subsidies, such as those embedded in crop insurance programs totaling over $17 billion annually under the Farm Bill, organic adoption remains marginal at under 1% of US cropland. These policy frameworks exacerbate trade-offs for global food security, as scaling organic production to meet demand could require 20-30% more arable land based on yield gaps observed across meta-analyses of over 300 studies, risking conversion of natural habitats and higher overall emissions from expanded cultivation.[4] In developing regions, where subsidies are limited, organic methods' lower nutrient cycling efficiency—relying on external manure imports—further strains local systems, contrasting with conventional farming's ability to intensify output on existing land.[215] Empirical critiques, including those from agricultural economists, argue that subsidies misdirect investments away from yield-enhancing technologies like precision nitrogen application, perpetuating a reliance on fiscal transfers that benefit larger operators disproportionately while smallholders face certification barriers exceeding $1,000-5,000 per farm annually.[216]| Aspect | Organic Farming | Conventional Farming | Policy Implication |
|---|---|---|---|
| Average Yield Gap | 19% lower (global meta-analysis)[116] | Baseline | Subsidies needed to offset; risks food insecurity if scaled |
| Production Costs | 20-30% higher (US field crops)[214] | Lower input efficiency | Market distortions via premiums/subsidies to achieve viability |
| Land Use Intensity | Higher per unit output | More efficient | Potential habitat loss; EU incentives drive inefficient expansion[213] |
