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Assam silk
Assam silk
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Assam silk denotes the three major types of indigenous wild silks produced in Assam—golden muga, white pat and warm eri silk. The Assam silk industry, now centered in Sualkuchi, is a labor-intensive industry.[1][2]

History

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Assam was well known for the production of high quality silk since ancient times. The craft of weaving goes along with the production of silk. It grew to such sophistication in Assam that it was known all over India and abroad. In the Kishkindha Kanda of Ramayana, it is stated that one travelling towards the east has to first pass through Magadha, Anga, Pundra and then the Kosha-karanam-bhumi ("the country of cocoon rearers").[3][4][5] Kautilya's Arthashastra, a political literature of the 3rd century BC, makes references to the highly sophisticated silk clothing from Assam. Kautilya mentions the production of Suvarnakudyaka (from Kamrupa) along with Vangika (from Vanga/southern Bengal), Magadhika (from Magadha) and Paundrika (from Pundra/northern Bengal), of which Suvarnakudyaka, Magadhika and Paundrika fabrics were types of Kauseya (Tussar/Muga) and Cina-patta (Mulberry silk).[6] The fact that Kamrupa produced Suvarnakudyaka is confirmed by the 8th-century writer Kumārila Bhaṭṭa who, in his commentary of Arthashatra, said that Kamrupa was Suvarnakudya(Kamarupeschaiva Suvarna Kudyah).[7] As per the Arthashatra, the fibres of Suvarnakudyaka were of 'the colour of butter', 'as red as the sun', and of the best quality.[8] Due to this description of colour, the type of silk can be easily identified as Muga. The text also refers to four trees (Vakula, Likucha, Vata and Naga-vriksa) which the silkworms feed on. Out of these, Vakula and Naga-vriksa[9] belong to the genus Ericales and Magnolia which the Muga silkworm Antheraea assamensis is known to feed on; while Likucha (Artocarpus lakucha) and Vata belong to the genus Moraceae(Mulberry) which the Pat Silkworm feeds on. This is further confirmed from the 9th century thesaurus Amara-kosha which mentions that the worms of the fibre Patrorna (a form of white silk), fed on the leaves of Vata, Lakucha, etc.[10] The Arthashastra also states that the fibre was spun while the threads were wet, indicating that the production method was still the same at that period.[11] The ancient text Kalika Purana(dated between 10th-11th century) well records the use of silk in the worship of deities in ancient Kamrupa. As per the text, while worshipping the deities at the Dikkarvasini pitha(also known as Tamreswari of Sadiya), red, yellow and white Kauseya(meaning wild silk, probably Muga) were used to drap the idols of the presiding deities of the temple.[12][13][14] It is known that Muga, in olden times, was available in yellow(natural), white(Mejankari muga) and often dyed red with lac.[15]

The knowledge of sericulture probably arrived with the Tibeto-Burman groups which arrived from China around the period of 3000-2000 BC. Moreover, there was another trade of Silk through the Southwestern Silk road which started from China, passed through Burma and Assam, finally getting connected to the main silk road in Turkmenistan. There are various other records to show that silk came to India through Assam. As per the Sanskrit text Harshacharita (biography of North Indian ruler Harshavardhan written by the court poet Banabhatta in the 7th century), during the coronation ceremony of King Harshavardhan, king Bhaskarvarman of Kamrupa gifted many precious items to the North Indian king. Out of this the most important ones include the precious fabrics and jewels. These included an umbrella wrapped by a dukula cloth, sacks of patta-sutra cloth as well as ksoma fabrics which were as pure as the autumn moon's light (sharada chandrama shaucha ksamani). These fabrics could either be silk[16] or linen. It is also mentioned in the text that the loin fibres were so even and polished that it resembled Bhoj-patra, which could indicate silk as well.[17] There are also references of Assam silk in the records written by Huen Sang where he has written the use and trade of silk in Kamrupa during the rule of king Bhaskar Varman. Ram Mohan Nath in his book The Background of Assamese Culture states that it would be "clear that in ancient times traders from different parts of Tibet, Central Asia and China flocked to Assam through various routes, and as they traded mostly in silk, they were generally called Seres – Cirrahadoi – Syrities – Cirata – Kirata. The word Kirata therefore, is a general term referring to the people of the Mongoloid origin and it refers specially to the Bodos."[18] These Bodos referred by Nath are today known as Kacharis which includes groups such as Boros, Deori,Dimasas, Chutias, Rabhas, Sonowal, Garo and Koch. J. Geoghegan in his book Silk in India states that: "Whatever may be the date of the introduction of the worm, its geographical distribution at present day, and the fact species first introduced was a multivoltine, seem to me to lead to the conclusion that the insect was first introduced into India from the north-east."[19]

Genetic research on silkworms show that Assam silk originated in two specific regions of Assam. One was Garo Hills in the ancient Kamrupa kingdom and the other was Dhakuakhana in the ancient Chutia kingdom.

Types of Assam silk

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Muga silk

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Muga silkworms on a som tree

Muga silk is the product of the silkworm Antheraea assamensis endemic to Assam. The larvae of these moths feed on som (Machilus bombycina) and sualu (Litsaea polyantha) leaves. The silk produced is known for its glossy, fine texture and durability. It was previously reported that muga silk cannot be dyed or bleached due to "low porosity", but this is incorrect; muga takes dye like any other silk. This silk can be hand washed with its lustre increasing after every wash. Very often the silk outlives its owner.

A set of mekhela chadors made with muga silk from Assam arranged around a jaapi and set on a shawl made with eri silk.

In 2015, Adarsh Gupta K of Nagaraju's research team at Centre for DNA Fingerprinting and Diagnostics, Hyderabad, India, discovered the complete sequence and the protein structure of muga silk fibroin and published it in Nature Scientific Reports[20]

Muga silk has been given the Geographical Indication (GI) status since 2007 and the logo for authentic production has been registered with Assam Science Technology and Environment Council. The Central Silk Board of India has the authority to inspect Muga silk products, certify their authenticity and allow traders to use the GI logo.

White pat silk

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A set of mekhela-chadar made with pat silk.

Pat silk is produced by Bombyx textor silkworms which feed on mulberry (Morus spp.) leaves. It is usually brilliant white or off-white in colour. Its cloth can dry in shadow.

Eri silk

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Eri silk is made by Samia cynthia ricini which feed on leaves of castor oil plant (Ricinus communis). It is also known as endi or errandi silk. Because manufacturing process of eri allows the pupae to develop into adults and only the open ended cocoons are used for turning into silk, it is also popularly known as non-violent silk. This silk is soft and warm and is popular as shawls and quilts.[21]

The silk industry of Sualkuchi

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Sualkuchi is a multi-caste town of Kamrup (rural) district of Assam, situated on the north bank of the mighty Brahmaputra at a distance of 30 km west of Guwahati.

Many people in Sualkuchi are weavers. Almost every household has a hand-loom to manufacture traditional Assamese silk. [citation needed]

As per the Census report of 2001, the workforce participation rate in the town was 37.93% of the total populations, of which only 0.53% were cultivators, 1.2% were agricultural labours, 56.37% were engaged in household industries and the remaining 41.90% were engaged in other activities.

There are several lakh throw and fly-shuttle handlooms in Assam, but most of them are domestic weaving a few metres of cloth for the use by the family members. There are also some semi commercial looms producing some metres of fabrics for the market during the off hours of the house-wives. These semi-commercial weavers work either independently or under some so called "Mahajans". Mahajans supply yarn to the poor weavers, who return the woven cloth against wages per piece.

History

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Although silk was cultivated and woven by women all around Assam, the silk clothes of a particular place named Sualkuchi achieved much fame during the Kamarupa as well as Ahom rule.

Sualkuchi is said to have been established in the 11th Century by King Dharma Pala of the Pala dynasty that ruled western Assam from 900 AD to about 1100 AD. Dharma Pala, the story goes, brought 26 weaver families from Tantikuchi in Barpeta to Sualkuchi and created a weavers' village close to modern-day Guwahati.[22] Silk was given royal patronage during that period and Sualkuchi was made an important centre of silk weaving.

The hand-loom industry of Sualkuchi creates cotton textiles, silk textiles, and Khadi cloth. These traditional textiles hold high social and moral value in and outside the state. However, Sualkuchi is best known for its silk textiles, both mulberry and muga silk. Muga, "the golden fibre", is produced only in Assam; it's become known as Assam silk from its association with the region. Such activities are intimately linked with the culture and tradition of the Assamese people since long past.

Having a long tradition of silk weaving at least since the 17th century, Sualkuchi is the centre of the silk hand-loom industry of Assam.[23][24] Originally, Sualkuchi was a "craft village" having several cottage industries until the 1940s, such as hand-loom weaving, traditional oil processing, goldsmithing, and pottery. But since the 1940s, the industries other than hand-loom have almost become extinct, and the artisans have taken up silk weaving. Until 1930, the weaving industry of Sualkuchi remained almost confined within the Tanti community of Tantipara. Later, people belonging to other communities gradually took up silk weaving. Now, even the fishermen of the Koibortapara hamlet of Bamun-Sualkuchi and the Brahmin families have also given up their ascriptive caste occupations and have taken up silk weaving as their main source of income.

The weaving industry of Sualkuchi received a big boost during the Second World War. The growing demand for fabrics and their increasing prices encouraged a few Tanti families to begin weaving commercially. They started weaving factories engaging hired wage weavers.[citation needed] Today, 73.78% of the households in Sualkuchi work in the commercial weaving industry.

Although the hired wage weavers were originally the local poor from Bamun-Sualkuchi and Bhatipara, migrant weavers from different parts of Assam have become dominant in the industry since the 1980s. The census of hand-looms in Sualkuchi, conducted in 2002 reveals that Sualkuchi has 13,752 active commercial hand-looms, and 54.75% of these looms are operated by female weavers who are hired from towns outside of Sualkuchi.

While silk-rearing vanished long time ago, the gani[check spelling] industry perished during the early 20th century as the 'Mudois' of Sualkuchi.

In the 21st century, the local weavers and artisans of Sualkuchi began using digital platforms to promote their products globally. [citation needed]

Cultural impact of Assam silk

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Assam silk has been recognized by major Indian cultural figures, most notably Mahatma Gandhi and Narayan Chandra Das.

Gandhi visited Sualkuchi on January 9, 1946, to view an exhibition of eri and khadi clothes. Designer Rajen Dek wove an image of Gandhi into a piece of pat cloth, and the exhibition presented it to him. The woven picture was so fine that even the two broken front teeth of Gandhiji with a smiling face were depicted and while seeing the picture the father of the nation remarked that the weavers could weave dreams in their cloth. [citation needed]

"Khat khat khat khatsalare sabade prean mor nite nachuyai" was one of the most popular radio songs composed and sung during the 1950s by the present artist pensioner Narayan Chandra Das Of Sualkuchhi. [citation needed] Actually the 'click-clack click-clack' sound of the loom make the soul of the passerby dance with the rhythmic rattle of the shuttle flying through the sheds of the wrap.

See also

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Notes

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Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
Assam silk refers to the three major indigenous silks produced in the northeastern Indian state of : the golden non-mulberry Muga, white mulberry Pat, and warm non-mulberry Eri varieties. These silks are derived from silkworms native to or cultivated in the region, with Muga silk exclusively produced in , accounting for 100% of India's output of this unique golden fiber. Renowned for their durability, luster, and natural sheen, Assam silks hold a prominent place in the state's traditional , which is deeply intertwined with rural livelihoods and cultural heritage. The origins of Assam silk trace back to ancient times, with references in Kautilya's from the 4th century BCE describing the richness of the region's silks, and mentions in the as the silk-producing province of Suvarnakanakanan. During the Ahom dynasty (1228–1826 CE), silk production flourished as a household craft, receiving royal patronage for ceremonial garments and exports to regions like and ; the first European record appears in 1662 from traveler . Post-independence, the industry has grown into a key agro-based sector, employing approximately 44,000 families in rearing alone across about 12,662 hectares of som and sualu host plant cultivation, primarily in districts like Kamrup, , and , as of 2023. Economically, Assam silk supports rural employment, particularly for women, generating significant income through weaving clusters like —known as the "Manchester of the East"—where 73.78% of households engage in production, yielding around 250 metric tons of Muga raw silk annually for the state as of 2023–2024. Culturally, these silks embody Assamese identity, used in traditional attire such as the mekhela chador for festivals like and weddings, with Muga earning (GI) status in 2007 to protect its authenticity. The industry's labor-intensive process—from rearing silkworms on host plants like som and sualu for Muga, mulberry for Pat, and castor for Eri to cocoon reeling—highlights its sustainability, though challenges like climate variability persist.

Overview

Definition and characteristics

Assam silk refers to the three major indigenous silks produced in the northeastern Indian state of , namely golden Muga, white Pat, and warm Eri, derived from silkworms adapted to the region's rich . These silks are prized for their natural origins and cultural significance, with production centered on semi-wild and domesticated species endemic or cultivated in Assam's subtropical environment. Muga silk, produced by the semi-domesticated silkworm assamensis, is renowned for its natural golden hue, exceptional durability, and shimmering sheen, making it one of the strongest natural fibers with a tenacity comparable to mulberry silk and an elongation at break of up to 40%. Pat silk, derived from the mulberry silkworm fed on local mulberry leaves, exhibits a brilliant white color, fineness, softness, lightness, and lustrous sheen, offering a smooth texture ideal for intricate weaving. Eri silk, obtained from (also known as Philosamia ricini), is characterized by its creamy warmth, thermal insulation properties that provide comfort in varying temperatures, and non-violent harvesting method, where cocoons are collected after the moth emerges, earning it the designation of or peace silk. These Assam silks share unique attributes such as high and moisture absorption, enabling comfort in humid climates, along with hypoallergenicity due to their protein-based that resists common irritants. They also demonstrate resistance to , including mold, fungus, and dust, attributed to the silkworms' to Assam's tropical conditions, enhancing their in moist environments. In Assamese nomenclature, "Muga" derives from the word meaning "yellowish-brown" or "amber," reflecting its golden luster; "Pat" (or "Paat") means "silk" in Assamese, denoting its fine quality; and "Eri" stems from "era," the Assamese term for the castor plant (Ricinus communis) that serves as the primary host for the Eri silkworm.

Geographical and ecological context

Assam, located in , encompasses the fertile , a vast formed by the and its tributaries, which provides nutrient-rich soils essential for . The region's subtropical climate, characterized by high temperatures averaging 24–28°C and annual rainfall exceeding 2,000 mm, creates optimal conditions for the growth of host plants and silkworm rearing. Dense forests and wetlands across the state, including those in biodiversity hotspots, sustain wild and semi-wild silkworm populations by offering natural habitats for endemic species. The ecological foundation of Assam silk production relies on specific host plants endemic to the region, which support the unique silkworm varieties. Muga silk derives from the Antheraea assamensis silkworm, which feeds primarily on som (Persea bombycina, formerly classified as Machilus bombycina), a semi-evergreen tree native to Assam's forests. Eri silk comes from the Samia ricini silkworm, sustained by castor (Ricinus communis) leaves, while Pat silk is produced by the Bombyx mori silkworm feeding on mulberry (Morus spp.) leaves. Biodiversity hotspots such as Kaziranga National Park contribute to sustainability by preserving diverse flora, including host plant species, which helps maintain wild silk ecosystems amid environmental pressures. The monsoon season, from June to September, brings heavy rainfall and elevated levels of 85–90%, influencing silk quality by promoting lush host plant growth but also dictating seasonal rearing cycles to avoid flood-related disruptions. These climatic patterns enhance cocoon durability and luster, though excessive can challenge disease management in rearing. In recognition of its regional specificity tied to Assam's geography and ecology, Muga silk received a Geographical Indication (GI) tag in 2007, safeguarding its unique production attributes and promoting sustainable practices. In April 2024, Bodo Eri silk also received a Geographical Indication tag, further recognizing the unique attributes of Eri production in Assam. This protection underscores the silks' dependence on the state's environmental conditions, extending benefits to Eri and Pat varieties through associated regional branding.

History

Ancient origins and traditional practices

The origins of Assam silk trace back to ancient times, with textual evidence indicating its integration into religious and cultural practices. The , a 9th-10th century tantric text composed in the , documents the use of fabrics in rituals and worship of deities, highlighting its sacred significance in early Assamese society. Earlier references in classical works like Kautilya's (c. 4th century BCE) mention dukula silks, including varieties akin to Assam's paat, eri, and muga, suggesting regional knowledge predating the . among indigenous communities further embeds in mythic narratives, portraying it as a golden thread woven into tales of prosperity and divine favor. During the (1228–1826 CE), silk production received royal patronage, elevating it to a cornerstone of the economy and courtly life. Ahom rulers, such as those in the , promoted by mandating silk rearing for royal garments and as tribute from vassals, fostering specialized communities of rearers and weavers. This support transformed into a symbol of status, with high officials required to wear silk attire, and weaving centers emerging under state oversight. Community-based practices thrived, particularly among tribes like the Bodo, who integrated rearing into household economies as a prehistoric legacy, selecting silkworms by cocoon morphology and managing seasonal broods on castor leaves. Indigenous knowledge of non-mulberry was transmitted orally across generations, emphasizing sustainable techniques adapted to Assam's . Practitioners collected wild muga cocoons from som and sualu trees in upper Assam's forests, processing them with natural alkalis like plantain ash for reeling without harming the . Natural dyeing relied on local plants— for yellows, chebula fruit for browns, and husks for deeper tones—mordanted with or cow dung, as practiced by communities like the Mishing in . These methods, preserved in proverbs and folk wisdom, underscored silk's role in daily attire and rituals. Assam silk also featured in ancient trade networks, linking the region to via overland routes through and as early as 128 BCE. These paths facilitated exchanges of silk with Chinese monks and Indian merchants by the CE, with serving as a key node for raw cocoons and finished textiles reaching and . Such connectivity not only spread techniques but also integrated Assam's wild silks into broader Asian cultural economies.

Colonial period and modern developments

During the British colonial period, which began with the annexation of Assam in 1826, the silk industry underwent significant transformations driven by commercial interests and export-oriented policies. The British administration, under figures like (1825–1832), introduced mulberry to Assam in the early , establishing a in Darrang in 1831 and importing mulberry plants and reeling equipment from Rangpur in to promote Pat silk production for export. This shift emphasized domesticated mulberry silk over traditional wild silks like Muga and Eri, leading to the disruption of indigenous practices as land was diverted to tea plantations, reducing areas under som (for Muga) from 15,907 acres in 1876 to 12,393 acres by 1881. farms were later set up to support this, including facilities at Titabar in 1919, in 1925, and Gaurisagar in 1945, focusing on mulberry seed production and export-oriented raw silk supply to markets in Calcutta, Dacca, and the . By 1906–1907, Assam's raw silk exports reached 5 maunds, reflecting the colonial emphasis on raw material extraction that undermined local weaving economies. Following India's independence in 1947, the Assam silk industry saw structured growth through government interventions aimed at revival and modernization. The state established the Department of and in 1948–1949 to promote silk production and handloom weaving, while the Central Silk Board (CSB), formed in 1949 under an , initiated programs in the 1950s to enhance mulberry, Muga, and Eri across Assam. These efforts included the establishment of mulberry seed farms during the First Five-Year Plan (1951–1956) to provide quality planting materials to rearers, boosting Pat silk output and integrating it with traditional wild silks. By the 1970s, the rise of cooperative societies further supported industry expansion; starting from 33 silk cooperatives by 1964–1965, their numbers grew significantly in the mid-1970s, helping weavers access markets, credit, and raw materials while reducing exploitation by middlemen. In recent decades, Assam's silk industry has experienced robust growth, with its share of India's total raw production rising from 12% in 2013–2014 to 16% in 2022–2023, driven by increased output in Eri (from 2,613 MT to 5,487 MT) and Muga (from 126 MT to 211 MT) despite a slight decline in mulberry. A 27-year analysis highlights the sector's expansion, with overall raw production roughly doubling from the late levels to approximately 5,720 MT by 2023, supported by initiatives like the Seneh Jori Assam Silk Outreach Mission launched in 2016, which targets 1 million kg of Muga and 10 million kg of Eri by 2025 through enhanced rearing and marketing. In 2023-24, production reached 5,745 MT, accounting for about 14.8% of India's 38,913 MT total, with Muga at 255 MT and Eri comprising the majority share. Technological integrations, such as mechanized reeling machines and improved post-cocoon processing under CSB schemes like Silk Samagra (launched 2017), have enhanced efficiency and quality. Post-2020, exports have benefited from national trends, with India's and goods exports surging 25.3% to $248.56 million in 2021–2022 and reaching approximately $244 million in FY 2023-24, aiding Assam's producers amid global demand recovery. The Seneh Jori mission's 2025 targets show partial achievement, with Eri production advancing but Muga lagging as of late 2025.

Types of Assam silk

Muga silk

Muga silk is derived from the cocoons of the semi-domesticated silkworm Antheraea assamensis, a species endemic to the northeastern of , particularly . This wild silk moth belongs to the family and is multivoltine, completing five to six generations annually. The larvae feed exclusively on the leaves of specific host trees, primarily Som (Machilus bombycina) in upper Assam and Soalu (Litsea polyantha) in lower Assam, which provide the necessary nutrients for their development. The silkworm's lifecycle varies by season, typically spanning 35-45 days in warmer months with four moults resulting in five larval instars, during which the larvae grow from about 2 mm to 30 mm in length. Production of involves collecting wild cocoons primarily during the two commercial crop seasons: Jethua in May-June and Kotia in October-November, when mature cocoons are harvested from host trees in natural or semi-cultivated settings. The silk's distinctive natural golden hue originates from the sericin protein coating the filaments, which imparts both color and a characteristic sheen without the need for dyes. Each cocoon yields a continuous filament of approximately 350-450 meters, often with 4-5 breaks, making reeling a labor-intensive process that requires cooking the cocoons to soften the sericin. Renowned for its exceptional qualities, exhibits remarkable durability, capable of lasting for generations while retaining its luster and strength, with tensile properties surpassing many other natural s due to its robust structure. It is lightweight yet strong, offering a soft texture with high absorption and resistance to stains, which has historically contributed to its value in as a premium . In contrast to the white Pat silk from cultivated mulberry or the warm, non-violent , Muga's semi-wild nature and golden tone make it uniquely suited for garments. Muga silk holds the distinction of being produced exclusively in , earning a (GI) tag in 2007 to protect its origin and authenticity under India's Geographical Indications of Goods Act. As of 2023-24, annual production stands at approximately 203 metric tons, underscoring its limited supply and cultural prestige.

Pat silk

Pat silk, also known as mulberry silk in Assam, is a variety of domesticated silk produced from the cocoons of the silkworm . This species is fully domesticated and relies exclusively on human care for its lifecycle, feeding solely on the leaves of mulberry plants (Morus spp.) during its larval stage. Unlike the wild silkworms used for other Assam silks, B. mori is multivoltine in the region's climate, producing 5-6 generations per year, which aligns well with the warmer plains of Assam where mulberry cultivation thrives. The production process begins with rearing B. mori larvae on mulberry leaves until they spin cocoons, each capable of yielding 300 to 900 meters of fine, continuous filament. These cocoons are harvested, boiled to kill the pupae and soften the sericin gum, and then reeled into raw threads without requiring bleaching, thanks to the natural brilliant white or off-white color of the fiber. In , this mulberry was introduced during the colonial era to diversify local textile production but has since been adapted using indigenous reeling techniques, integrating for efficient processing. Pat silk is prized for its smooth, lustrous texture and high tensile strength, making it ideal for weaving fine garments such as sarees and mekhela chadors that drape elegantly and withstand regular use. Its durability stems from the , which provides exceptional strength relative to its nature. As of 2023-24, annual production in is approximately 100 metric tons, reflecting the focus on quality over volume in this cultivated variety.

Eri silk

Eri silk, also known as or peace silk, is produced by the domesticated Samia ricini (previously classified as Philosamia ricini), which primarily feeds on the leaves of the castor oil plant (Ricinus communis). This spins open-ended, spindle-shaped cocoons, allowing the moth to emerge naturally without harming the , which distinguishes it from other silks where cocoons are typically processed while the pupa is inside. The production of Eri silk in Assam benefits from the silkworm's hardy nature, enabling year-round rearing with 5-6 cycles annually, subject to food plant availability. The resulting has a fluffy, wool-like texture due to its short staple length and lower sericin content, which gives it a matte appearance and soft feel compared to smoother silks. Specific variants of Assam's , such as Bodo Eri Silk, received a (GI) tag in 2023, recognizing their unique origin and traditional methods tied to the region's castor-based . Eri silk is prized for its excellent , making it suitable for winter wear such as shawls, while being and gentle on sensitive . Its eco-friendly production aligns with non-violent harvesting principles, contrasting with conventional methods that involve boiling cocoons with live pupae. In , annual production reached approximately 5,487 metric tons of raw Eri silk in 2022-23, the highest among the state's silk varieties and accounting for over 60% of India's total Eri output. As of 2023-24, the Directorate of reports targets and ongoing initiatives to sustain and increase Eri production amid challenges. Often called the "poor man's silk" for its affordability and accessibility, Eri silk plays a vital role in tribal economies across , supporting small-scale, village-based that provides livelihoods for rural communities.

Production processes

Sericulture and rearing

in involves the cultivation of silkworms for the production of Muga, Pat, and , encompassing the biological lifecycle from egg to cocoon through controlled rearing practices tailored to the region's subtropical climate. The process begins with the laying of disease-free eggs by female silkworms, which are incubated under specific and conditions to ensure uniform hatching; for instance, Muga eggs are maintained at 26±1°C and 85±5% relative humidity for optimal emergence. Newly hatched larvae, or young worms, are brushed onto fresh host plant leaves using tools like paraffin paper and foam pads to initiate feeding, with the larval stage divided into five instars marked by four molting periods where silkworms shed their skin to grow. During these instars, larvae feed voraciously on species-specific host plants—such as Som and Soalu for Muga, mulberry for Pat, and castor for —four times daily in later stages to support rapid development, which typically spans 25-30 days for Eri and similar durations for the others. As larvae mature, they cease feeding and spin protective cocoons using silk glands, a process facilitated by mountages like bamboo trays or boxes that encourage uniform filament production; harvesting occurs 7-10 days post-spinning to capture the pupal stage before moth emergence. Disease management is integral to , relying on preventive disinfection of rearing spaces and equipment with solutions like 5% bleaching powder or 2% seven days before and after each cycle to curb bacterial, viral, and fungal infections such as flacherie or muscardine. Natural methods, including lime mixtures and biological controls like releasing Trichogramma chilonis parasitoids, are employed to minimize chemical use, particularly on host plants where pests like leaf gall are targeted without residues that could affect health. Rearing occurs in ventilated indoor structures for Eri and Pat to maintain hygiene, while Muga often uses semi-open setups under nets on natural host foliage, adapting to Assam's high humidity and rainfall. Assam-specific adaptations reflect the silks' unique ecologies: Muga follows a multivoltine cycle with 5-6 annual crops, including commercial Jethua (May-June) and Katia (October-November) seasons on rainfed wild host plants, requiring minimal intervention but vigilant transfer of worms to fresh foliage using disinfected chaloni baskets. Pat silk production, derived from mulberry silkworms, employs controlled greenhouse-like conditions for year-round rearing, with a 45-55 day lifecycle emphasizing uniform mulberry leaf supply via chopping boards and knives to ensure tender feed for early instars. Eri rearing is predominantly backyard-based, suitable for small-scale operations throughout the year but optimized in March-April and September-October, using platform trays (up to 300 worms per 3x3 ft) for late-stage larvae and daily bed cleaning to manage waste and humidity. Common tools across types include rearing trays, nets for protection, and leaf choppers for processing feed, enabling efficient handling in resource-limited settings. The labor-intensive nature of rearing is predominantly family-operated, with women forming the majority of the workforce, handling tasks from egg brushing to bed maintenance and cocoon collection, which fosters community involvement in rural . Yield is influenced by environmental controls, particularly maintaining 70-90% relative humidity to prevent or fungal growth, alongside optimal temperatures (24-28°C for most types) that can significantly improve cocoon quality under controlled conditions. Quality control commences during harvesting, with cocoons sorted by grade based on shell weight, uniformity, and filament length—such as good quality Eri cocoons typically having 0.4-0.5 g shells—using to discard flimsy, Uzi-infested, or double cocoons that could reduce reeling efficiency. Strict separation of rearing batches for Muga, Pat, and Eri prevents cross-contamination from diseases or hybrid feeds, ensuring purity through dedicated tools and disinfection protocols.

Weaving and post-processing

The process of reeling and spinning transforms raw cocoons into usable silk yarn for Assam's indigenous silks. For Muga silk, cocoons are first cooked in an alkaline solution of soda ash to soften the sericin gum, allowing the filaments to be unwound; this is followed by washing the raw silk with water to remove excess alkali and re-reeling to produce cohesive yarn. Pat silk reeling involves similar boiling and extraction on charkha machines to yield fine, white filaments suitable for twisting into yarn. In contrast, Eri silk, with its discontinuous filaments, undergoes spinning after boiling cocoons in a soda solution for about an hour, where individual cocoons are stretched and spun by hand on takli spindles or charkhas to form soft, warm yarn. Weaving in Assam relies on traditional handlooms tailored to each silk type, emphasizing artisanal precision and regional motifs. Pat silk is typically woven on fly-shuttle frame looms, enabling efficient production of lightweight sarees and fabrics with delicate floral and creeper patterns. Muga silk sarees are crafted on sturdy pit looms, which provide the tension needed for the robust, golden threads and intricate geometric motifs. Eri silk, often blended with , is woven on backstrap or throw-shuttle looms to accommodate its shorter, knotted fibers, resulting in textured shawls featuring bold geometric designs. Post-processing enhances the silk's aesthetic and functional qualities through natural and traditional techniques. Degumming, achieved by boiling the yarn in soapy water, removes residual sericin to impart a natural shine, particularly vital for Muga's luster. Dyeing employs natural sources like for deep blues, turmeric for yellows, and tesu flowers for oranges, applied via mordant methods to ensure color fastness on Pat and Eri yarns. Finishing steps include calendering, where fabrics are passed through heated rollers to smooth the surface and improve drape, followed by hand-polishing for a luxurious feel. Artisanal skills in Assam silk production are honed through community-based training in key clusters like and , where over 90% of output remains handloom-based, preserving techniques passed down generations. These programs, often supported by government initiatives, focus on mastering operations, motif integration, and to sustain the industry's cultural integrity.

Industry and economic aspects

Key production centers

, located in the on the northern bank of the near , serves as the primary hub for Assam silk production and is often referred to as the "Silk Village of India" or the " of the East." This village emerged as a key silk weaving center during the 17th century under the , when administrator Momai Tamuli Barbarua established it as a craft settlement focused on and handloom activities. Today, it hosts approximately 17,000 handlooms operated by around 19,500 weavers, making it the largest silk weaving cluster in the region and accounting for the majority of Assam's handloom silk output. Other notable production centers include , which plays a crucial role in for muga and through the Central Muga Eri Research and Training Institute (CMER&TI), originally established in 1972 as the Central Muga Eri Research Station at Titabar and upgraded to a full-fledged institute in 1999 under the Central Silk Board. functions as a major marketing and distribution point, with emporia like the Assam Silk Emporium facilitating sales of locally produced . Rural clusters in districts such as Kamrup and Darrang also contribute significantly, particularly through decentralized and activities that support community-based production. Supporting infrastructure across these centers encompasses sericulture farms for rearing, societies that provide and raw materials, and organizations like the Directorate of , Assam, which oversees development initiatives. The Assam Government Marketing Corporation and various silk , such as Kalpataru, aid in aggregation and . Recent expansions include the establishment of clusters under projects like the 2023 Gramya Silk initiative, aimed at enhancing production capacity in rural areas through modern facilities and skill development programs. Cluster-specific specialties highlight regional strengths: excels in intricate Muga-Pat silk blends, renowned for their golden sheen and fine textures used in traditional garments like mekhela chadors. In contrast, rural areas in Kamrup and Darrang focus more on production, leveraging local castor plantations for sustainable, non-mulberry suited to smallholder farmers.

Economic contributions and trade

The Assam silk industry plays a pivotal role in the state's economy, supporting approximately 1.2 million people through direct and indirect employment as of 2024, with around 60% of the workforce comprising rural women engaged in various stages from rearing to weaving. activities foster and provide year-round livelihood opportunities in over 9,000 villages, engaging about 3.01 families as of 2023–24. In terms of economic output, the sector is bolstered by raw silk production of 5,745 metric tons in 2023–24, primarily from eri, muga, and pat varieties. Post-2020, exports have grown by about 20%, driven by rising global demand for sustainable and indigenous textiles. Trade dynamics highlight Assam silk's international appeal, with significant exports to the and targeting the and luxury apparel markets, where its unique textures and eco-friendly attributes command premium pricing. Domestically, sales are facilitated through handloom expositions and cooperatives, though the industry grapples with price volatility, exemplified by raw yarn fluctuating around INR 25,000 per kg in 2024 due to cocoon yield variations and market competition. Government interventions, including subsidies and infrastructure support under the National Handloom Mission, have propelled a 15% annual growth rate in production and market outreach, enhancing cluster development in key areas like .

Cultural and social significance

Traditional uses in attire and crafts

Assam silk has long been integral to traditional attire, with the Mekhela Chador—a two-piece garment consisting of a cylindrical (Mekhela) and a draped upper piece ()—serving as the indigenous dress of women in the . This attire is commonly woven from , prized for its natural golden sheen and exceptional durability, making it ideal for formal occasions such as weddings where its resilience withstands repeated use and washing. In contrast, Pat silk, known for its lightweight elegance and off-white luster, is frequently used in everyday garments like the Gamocha, a versatile rectangular scarf or towel worn around the neck or shoulders for daily protection and adornment. Eri silk, with its wool-like texture and thermal properties, finds application in shawls and chaddars that provide insulation during cooler months, often mixed with for added comfort in . These material choices reflect the silks' inherent qualities: Muga's strength for enduring formal ensembles, Eri's insulating warmth for practical insulation, and Pat's finesse for subtle, lightweight sophistication. Beyond clothing, Assam silk contributes to various crafts, including household items like Gamocha towels and chaddars used as wraps or mats, as well as decorative pieces such as wall hangings and bags featuring intricate motifs inspired by local symbols like the (traditional hat). Artisanal techniques have evolved from hand-spun threads on primitive back-strap looms to contemporary fusions, where traditional weaves are integrated into modern and designer accessories while preserving handloom authenticity.

Role in festivals, identity, and heritage

Assam silk holds a central place in the festivals of the region, particularly during , the vibrant harvest celebration that marks the Assamese New Year. In Rongali Bihu, participants don traditional attire such as the Mekhela Chador woven from , symbolizing prosperity and cultural continuity through its golden sheen and durability. This silk is prized for its auspicious qualities, often adorning dancers and performers who embody the festival's themes of renewal and community joy. The exchange of silk garments during these events further reinforces social bonds, representing shared heritage and well-wishes for abundance. Muga silk, in particular, embodies Assamese identity and pride, serving as a tangible link to the state's ancient traditions and serving as a marker of cultural distinction. Weavers are revered as custodians of this legacy, preserving techniques passed down through generations and infusing each piece with the essence of Assamese resilience and artistry. The fabric's exclusivity underscores regional pride, with its natural luster evoking the lush landscapes of and fostering a sense of unity among communities. Efforts to seek recognition for Muga weaving traditions highlight its global cultural value, as Assam's tribal weaver clusters, including those specializing in Muga, appear on tentative lists for intangible heritage status. In preserving heritage, Assam silk, especially Eri variants among tribal groups like the Bodo, integrates intricate patterns that narrate folklore and ancestral stories, ensuring the continuity of indigenous knowledge. Bodo Eri silk weaves, with their geometric motifs and sustainable practices, reflect the community's deep-rooted connection to nature and spirituality, often featured in rituals that honor Bathouism ancestor worship. This preservation extends to social dynamics, where silk production empowers women artisans by elevating their roles from domestic tasks to economic and cultural influencers, fostering independence through skill transmission and community leadership. Such involvement challenges traditional gender norms, positioning women as vital guardians of Assam's textile legacy. Contemporary cultural impacts of Assam silk are evident in tourism and media, with , the renowned silk village, drawing visitors to witness weaving demonstrations and festivals that showcase Muga and Eri production as living heritage. These events promote cultural immersion, highlighting silk's role in modern Assamese narratives. In the , communities maintain ties by incorporating Assam silk into celebrations and attire, sustaining identity abroad through preserved weaving practices and shared stories of origin.

Challenges and future outlook

Environmental and sustainability issues

The production of Assam silk, particularly Muga and Eri varieties, faces significant environmental challenges exacerbated by . Erratic monsoons and rising temperatures have disrupted traditional rearing cycles, leading to reduced silkworm survival rates and lower cocoon yields for , which is highly sensitive to and heat fluctuations. These shifts have forced rearers to adjust rearing schedules by 10-15 days to mitigate losses, though overall production remains vulnerable in Assam's flood-prone . Additionally, climate-induced stressors have increased the incidence of silkworm diseases, such as pebrine caused by the protozoan Nosema assamensis, which leads to spotted larvae, poor cocoon quality, and substantial mortality in Muga populations. Resource depletion poses further threats to silk ecosystems. in Assam's forests, driven by and , has reduced habitats for host like Som (Persea bombycina) essential for Muga silkworms, with the state losing approximately 340,000 hectares of tree cover between 2001 and 2024, equivalent to a 12% decline since 2000. This habitat loss directly limits food availability and silkworm rearing potential. In Eri silk production, pesticide applications on Pat (castor or ) host , often borrowed from nearby tea plantations, contaminate leaves and harm silkworm physiology, causing symptoms like reduced feeding and immune suppression while broader suffers from chemical runoff affecting soil and aquatic life. Sustainability issues in processing amplify these ecological pressures. The reeling stage for Muga and other silks is water-intensive, requiring substantial volumes for and degumming cocoons, which contributes to local and effluent in reeling hubs like . Cocoon waste, including sericin-rich pupal remains and unraveled fibers, generates 8-10 kg of organic byproducts per kilogram of fresh cocoons in Eri production, often discarded without treatment and leading to if not managed. In contrast, Eri silk offers relative sustainability advantages through low-input farming on hardy host plants like castor, requiring minimal , fertilizers, or pesticides compared to Muga or mulberry systems, thus preserving and reducing resource strain.

Initiatives, innovations, and global prospects

The Assam government, in collaboration with the Central Silk Board, has implemented several initiatives to enhance sericulture productivity, including the Bodoland Sericulture Mission, which has boosted Eri silk production and farmer incomes in the Bodoland Territorial Region through pre-cocoon support and training programs. Additionally, the Assam Seed & Organic Certification Agency (ASOCA) facilitates organic certification for Muga silk, promoting sustainable practices by verifying compliance with ecological standards and supporting market access for certified products. These efforts align with national goals, as evidenced by India's raw silk production rising from 31.9 thousand MT in 2017-18 to 38.9 thousand MT in 2023-24, though production declined to 30,614 MT in 2024-25, with Assam contributing significantly to non-mulberry silk output. Innovations in sericulture include the development of hybrid silkworm breeds that enhance disease resistance and adaptability to adverse conditions, as promoted by the Directorate of Sericulture, leading to improved cocoon productivity and survival rates. Solar-powered looms have been introduced to support women artisans, with initiatives like Resham Sutra distributing energy-efficient machines that reduce operational costs and promote in spinning and across Assam villages. Research on for supply chain visualization and traceability in the industry aims to ensure compliance and combat adulteration, though implementation remains in exploratory stages. Global prospects for Assam silk are promising amid rising demand for , with gaining international recognition through certifications like for eco-friendly standards, positioning it as a alternative in global markets. Indian exports, including , to the EU reached approximately $7.6 billion in 2024-25, with combined exports to the US and EU exceeding $18 billion, driven by EU-India partnerships launching projects to strengthen sectors and sustainable supply chains. Brands like integrate Assam Muga and into their collections to amplify artisan reach internationally. Recent community-led initiatives, such as the Way of Living Studio in , focus on reviving Muga and production through sustainable models involving rural women, addressing post-COVID challenges like manpower shortages. Looking ahead, Eri silk holds strong potential in eco-textiles due to its production process and low environmental footprint, with 40% lower than conventional , enabling applications in biodegradable and ethical apparel. The Central Muga Eri Research & Training Institute (CMER&TI) is advancing research on climate-resilient varieties through innovations in rearing practices that mitigate disease risks and enhance crop stability for Muga and Eri silkworms in .

References

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