Mtonnes of crop residue was produced in 2014-15 in India among which cereals were the largest producer of crop residue followed by sugarcane. The energy potential from paddy rice straw crop residue was estimated as 486,955 megawatt for 2014-15 and similarly for coarse cereals it was 226,200megawatt.Keywords: crop residue, economic value, environmental sustainability, composites making, India
IntroductionAgriculture has a majorshare in the overall economy of India. In different agro-ecological regions of India, a wide range of crops are cultivated across the vast majority of land with significant quantity of crop residue (noneconomical plant parts) that are left in the field after harvest.After being usedin competitive alternatives such as cattle feed, animal bedding, cooking fuel, organic manure etc., nearly 234 million tonnes/year (i.e. 30%) of gross residue generated in India is available as surplus. This huge amount of crop residue has economic value. Approximately 500-550 million tonnes (Mt) of crop residue is generated on-farm and off-farm annually from its production of 110 Mt of wheat, 122 Mt of rice, 71 Mt of maize, 26 Mt of millets, 141 Mt of sugarcane, 8 Mt of fibre crops (jutemesta, cotton) and 28 Mt of pulses. Multipurpose use of crop residue include, but are not limited to, animal feeding, soil mulching, bio-manure, thatching for rural homes and fuel for domestic and industrial use.Despite the known of its benefits, growers burn a significant portion of the crop residues on-farmso thatthe succeeding crop can be sown on clear field. Mechanized farming coupled with lack of low-skilled farm labor and high associated cost further exacerbate the problem of on-farm burning of crop residues. Irrigated areas where multiple crops are grown annuallyand areas adjoining to the national capital region and satellite cities had experienced a surge in burning of rice, wheat, cotton, maize, millet, sugarcane, jute, rapeseed-mustard https://doi.org/10. 1515/opag-2017-0053 received December 28, 2016; accepted july 24, 2017 Abstract: India is one of the key producers of food grain, oilseed, sugarcane and other agricultural products. Agricultural crops generate considerable amounts of leftover residues, with increases in food production crop residues also increasing. These leftover residues exhibit not only resource loss but also a missed opportunity to improve a farmer's income. The use of crop residues in various fields are being explored by researchers across the world in areas such as textile composite non-woven making processes, power generation, biogas production, animal feed, compost and manures, etc. The increasing trend in addition of bio-energy cogeneration plants, increasing demand for animal feedstock and increasing trend for organic agriculture indicates a competitive opportunity forcrop residue in Agriculture. It is to be noted that the use of this left over residue isoften not mutually exclusive which makes measurement of its economic value more difficult.For example, straw can be used as animal bed...