Grassroots innovations for better sericulture

Jasmeena Qadir

Naveed Hamid

Grassroots innovations for better sericulture. Innovation means addressing a new idea, technique or solution to a problem to enhance the efficacy and durability of a system. In agriculture, innovations are the new products, techniques, or strategies developed by research scholars, farmers or organizations to maintain the sustainability of agriculture for its contribution to food security, economic development and natural resource management (FAO, 2019). Sericulture is an agro-based industry that deals with the rearing of silkworms for the production of silk. Sericulture is the greatest labour-intensive sector of the Indian economy and offers a source of livelihood to a major part of the population by providing profitable self-employment to farmers and their families. It requires low investment, a short gestation period with greater income returns and self-employment for small and marginal farmers.

It is regarded as both, an art and science which involves three major components viz., mulberry cultivation, silkworm rearing and post-cocoon processing. It comprises of a series of on-farm and off-farm activities and generates a lot of by-products from each activity directly or indirectly. Sericulture byproducts are developed as alternative options to the food industry, drug system biomedical engineering and textiles. Silkworm pupa being proteinaceous has a wide range of applications in dietetics, animal food, cosmetics and fertilizers (Jaiswal et al., 2020). Sericulture is inter-connected and inter-related with agricultural crops viz., biogas production, livestock production, aquaculture, horticulture etc. Wastes in sericulture are generated in bulk in each activity and can be exploited for biofuel, biogas, livestock production and mushroom cultivation. Seri- bio waste viz., surplus leaf, bed-refuse from silkworm rearing activity can be used for cattle and sheep fodder. The integrated system of sericulture farming with agriculture and other allied fields stimulates maximum exploitation of bio-resources of each system with the reduction in its adverse effects on the environment. Nothing is a waste in sericulture and can be potentially exploited in other sectors which promotes sustainable development and prosperity of small enterprises of other sectors. Sericulture fulfills the employment to 8.8 million people in India (CSB report, 2023) and identified by researchers and policymakers as a potential hub for socio-economic development.

INNOVATIONAL INTERVENTION IN DIFFERENT SECTORS OF SERICULTURE

1. Mulberry cultivation:

Mulberry is propagated mainly through stem cuttings. The manual preparation for cuttings requires many skilled labors. The cutting preparation machine which makes 1400-1500 cuttings in one hour has been developed by CSRTI Mysore. Mulberry leaf harvest and disposal at the place where silkworm rearing is being conducted is time consuming and laborious process. Mulberry plant cutter” which uses a holder to hold the plant and a cutter to cut the plant has been developed. It is movable, simple, convenient and farmer friendly machinery. CSRTI Mysore have developed paired row and 3M plantation system to accommodate more number of mulberry bushes and mechanized practices evolved. It reduces cost of leaf production and working efficiency faster. Different equipments have been developed for ease in intercultural operations viz., Power Rotavator, Cultivator and Weeder. These are cost-effective and convenient for use in different mulberry plantation systems such as., pit system, row system and tree or bush plantation system. Disease and pest control is important for healthy mulberry production. Different sprayers have been developed by different institutes viz., self-propelled sprayer, power tiller mounted sprayer by CSRTI and TNAU respectively. Many technological innovations have been developed for the control of mulberry diseases viz., Navinya, Nemahari (Plant based formulation), Raksha (Talc-based biofungicide) and root-fix for control of root-rot and root knot diseases of mulberry. Azotobacter biofertilizer (Azotobacter chrococum bioformulation) is being effectively used as a nitrogenous fertilizer in mulberry.

Grassroots innovations for better sericulture.

2. Innovations in silkworm rearing

Silkworm rearing is the mass scale rearing of silkworms for production of silk (Vijayakumar et al., 2007). Both on-farm and off-farm activities imparts greater employment potential feasible for women fork of the rural society as well. However, need of technological developments asserts higher silk production with better income to farming people. Contemporary sericulture has been advanced by the implementation of novel technological innovations at farm and industry level to enhance the silk productivity (Singh et al., 2021). The growth and development of silkworm is influenced by environmental factors. Therefore, the maintenance of environmental parameters as per requisites of silkworm health is a bit challenging process. However, the potential performance of novel innovations viz., Arduino aided Internet of Things (IoT), image processing technique and smart sensors of technological innovation is appraised as a master stroke key to the problem. It is simple, convenient and cost-effective solution to achieve successful cocoon crop production (Rokhade et al., 2021). One more innovation, is the development of Internet of Things (IoT) empowered Wireless Personal Area Network (WPAN) system using sensors for monitoring of environmental factors according to recognized different life cycle stages and capturing photos simultaneously to achieve the improvement in series of life cycle stages in silkworm (Nivaashini et al., 2018). Many models have been proposed time to time based on Internet of things (IoT) for the development of smart sericulture technology to promote sericulture (Srinivas et al., 2019; Sreedhar et al., 2020; Eethamakula et al., 2020; Jeegadeesan et al., 2021). In the UT of Jammu and Kashmir, there are three different agro-climatic zones viz., temperate, intermediate (lies between temperate and sub-tropical) and sub-tropical zone. Therefore, there is need of different mulberry cultivars, cultivation practices and silkworm breeds which are specific to different agro-climatic regions. The development of region specific silkworm is of prior importance to revive sericulture industry in Jammu and Kashmir. Fortification of mulberry leaves with proteins and other supplements is a latest technique to enhance the cocoon production. It employs use of different plant or animal based products rich in proteins more particularly to feed the silkworm larvae (Qadir et al., 2022 a). A chawki leaf chopper for chopping the mulberry leaf in thin slices for consumption of young age larvae have been developed. An artificial silkworm diet known as “Nutrid” have been developed for healthy and vigorous growth of silkworms. CSRTI Mysore, have developed a device which acts as both heater and humidifier as per requirement of rearing room. Collection of matured larvae and their mounting on mountage is a laborious process. A plant based hormone which comprises of photoecdysone known as “Sampoorna” have been developed for early and uniform maturation of silkworms. A device which picks and separates matured silkworms from mulberry twigs in shoot system of rearing and from trays in tray system of rearing have been developed with almost negligible injury risk to silkworms. Disinfection is the foremost operation to be carried before commencement of silkworm rearing to maintain the pathogen-free environment for silkworm. An ecofriendly and cost-effective tool which employs the use of fire-flames and LPG as fuel known as flame-gun, have been developed to disinfect the incubation, rearing, leaf, cocoon storage room and rearing equipments. Many bed-disinfectants have been developed such as., labex, Ladhoi, Jeevan- Sudha, Resham Jyoti, RKO, Sericillin, Ankush, Vijetha, Amruth to defend the disease causing pathogens in silkworm rearing. Manual dusting of bed-disinfectants is unsafe for applier. CSRTI Mysore have developed power/battery operated duster which evenly speads the disinfectants over the silkworm body on trays in less time.Pest control can be achieved by application of uzitrap, uzicide etc to control the major pest, Exorista bombycis in silkworm rearing. Plastic tray washing machine possesses efficiency of washing 120 trays/hr with complete disinfection are developed to save the labour charges and time in silkworm rearing.

3. Innovations in post-cocoon sector

The collection and separation of cocoons from cocoon frames is laborious and time consuming process. The development of handle/ pedal operated cocoon harvesting machine used for harvesting from 25-50 frames/hr and 50-60 frames/hr from hand operated and pedal operated harvester respectively. Deflossing is the process of removing floss layer of the cocoon. Manual deflossing is time consuming process and requires labour. Cocoon deflossing machines viz., hand operated, hand operated cum motorized and fully motorized which can defloss 25-30 kg/hr, 50-60 kg/hr and 75-80 kg/hr respectively have been developed. In grainages, an ample quantity of cocoon needs to be cut for sex determination of pupae and estimation of quantity parameters such cocoon weight, shell weight and shell ratio. Cocoon cutting machine have been developed with efficiency of cutting 5000 cocoons/hr have been developed. Cocoon boiling or cooking is the process of boiling the cocoons to soften the sericin layer for smooth unwinding of silk fibre from the cocoon. It is mostly carried by simple cooking either in a single-pan system or in a three-pan system at different temperatures. These methods render the cocoons either over-boiled or under-boiled which are unsuitable for the reeling process. A new technique “Vacuum boiling machine” has been developed in which the uniform softening of all the layers is attained with better reelability. Metallic buttons are non-circular stainless steel devices used as thread guides with required specifications as that of yarn size, have been developed to avoid slubs in yarn and can be used for a comparatively longer time.

Conclusion

Sericulture being the labour-intensive sector provides a source of profitable self-employment to a large number of the Indian population. Labour wages cost about 65-70% of the total cocoon produced from different sectors of sericulture in India. Hence reduction in labour dependency will ultimately reduce the production costs. The farming technicality in each sector of sericulture is the need of the hour. Innovations play a prominent role in accomplishing the goal. The novel ideas related to different approaches, appliances, and techniques connected with farming people can be explored in developing sericulture. Investment in technology, promotion of technologies and conduction of training programs can contribute to improving the competence in sericulture. The acceptance of challenges and adoption of innovations can lead to developments in sericulture.

Naveed Hameed is CEO, SKIIE Centre, SKUAST-K

Jasmeena Qadir has PhD in Sericulture