Person: Sudhir-Yadav
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Sudhir-Yadav
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Sudhir-Yadav
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0000-0001-7658-8144 6 results
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- Trans-disciplinary responses to climate change: lessons from rice-based systems in Asia(MDPI, 2020) Hellin, J.; Balié, J.; Fisher, E.; Kohli, A.; Connor, M.; Sudhir-Yadav; Kumar, V.; Krupnik, T.J.; Sander, B.O.; Cobb, J.N.; Nelson, K.; Setiyono, T.; Puskur, R.; Chivenge, P.; Gummert, M.
Publication - Guidelines for dry seeded aman rice (DSR) in Bangladesh(IRRI, 2014) Gathala, M.K.; Sudhir-Yadav; Mazid, M.A.; Humphreys, E.; Ahmed, S.; Krupnik, T.J.; Rashid, M.H.; Chauhan, B.S.; Kumar, V.; Russell, T.; Saleque, M.A.; Kamboj, B.R.; Jat, M.L.; Malik, R.; Tiwari, T.P.; Mondal, M.; Rahmand, M.; Saha, A.; Hossain, K.; Saiful Islam; Mcdonald, A.Dry seeded rice (DSR) is becoming an attractive option for farmers as it has a much lower labor requirement than manually transplanted rice. Labor for transplanting rice has become scarce and costly because laborers are shifting from agriculture to industry, public works and services, and migrating abroad. DSR can be readily adopted by small farmers as well as large farmers, provided that the required machinery is locally available (e.g., through custom hire from agricultural service providers). Best practice involves using a 2- or 4-wheel tractor-drawn drill to seed in rows into nontilled or dry tilled soil, as for wheat. Because the soil is not puddled, DSR also has a lower water requirement for crop establishment, and may require less frequent irrigation than puddled transplanted rice grown with alternate wetting and drying water management during dry spells. Where arsenic contaminated groundwater is used, less irrigation means less arsenic brought to the soil surface. Furthermore, accumulation of arsenic in the grain and straw is much less if the soil is allowed to dry between irrigations to let air (oxygen) into the soil (“aerobic” conditions) than in continuously flooded rice.
Publication - A global analysis of alternative tillage and crop establishment practices for economically and environmentally efficient rice production(Nature Publishing Group, 2017) Chakraborty, D.; Ladha, J.; Dharamvir Singh Rana; Jat, M.L.; Gathala, M.K.; Sudhir-Yadav; Adusumilli Narayana Rao; Ramesha, M.S.; Raman, A.K.Alternative tillage and rice establishment options should aim at less water and labor to produce similar or improved yields compared with traditional puddled-transplanted rice cultivation. The relative performance of these practices in terms of yield, water input, and economics varies across rice-growing regions. A global meta and mixed model analysis was performed, using a dataset involving 323 on-station and 9 on-farm studies (a total of 3878 paired data), to evaluate the yield, water input, greenhouse gas emissions, and cost and net return with five major tillage/crop establishment options. Shifting from transplanting to direct-seeding was advantageous but the change from conventional to zero or reduced tillage reduced yields. Direct-seeded rice under wet tillage was the best alternative with yield advantages of 1.3–4.7% (p < 0.05) and higher net economic return of 13% (p < 0.05), accompanied by savings of water by 15% (p < 0.05) and a reduction in cost by 2.4–8.8%. Direct-seeding under zero tillage was another potential alternative with high savings in water input and cost of cultivation, with no yield penalty. The alternative practices reduced methane emissions but increased nitrous oxide emissions. Soil texture plays a key role in relative yield advantages, and therefore refinement of the practice to suit a specific agro-ecosystem is needed.
Publication - Operational manual for mechanical transplanting of rice(CSISA, 2015) Rickman, J.F.; Mussgnug, F.; Khanda, C.M.; Satpathy, S.D.; Parida, N.; Singla, K.; Kumar, V.; Banik, N.C.; Iftikar, W.; Mishra, A.; Sudhir-Yadav; Kumar, V.; Malik, R.; Mcdonald, A.This booklet highlights the benefits of mechanical transplanting of rice and discusses some of the operational and management issues that need to be addressed. It will serve as an easy, step-by-step guide for extension staff, service providers and innovative farmers to use mechanical transplanting with or without puddling.
Publication - Guidelines for Dry Seeded Rice (DSR): in the Cauvery Delta Zone, Tamil Nadu, India / Sudhir Yadav and others(CSISA, 2014) Sudhir-Yadav; Ganeshamoorthy, R.; Humphreys, E.; Rajendran, R.; Ravi, V.; Mussgnug, F.; Kumar, V.; Chauhan, B.S.; Ramesh, T.; Kamboj, B.R.; Gathala, M.K.; Malik, R.; Jat, M.L.; Mcdonald, A.Dry seeded rice (DSR) is becoming an attractive option for farmers in the Cauvery Delta Zone (CDZ) due to the elimination of the labor requirement for nursery preparation and maintenance, pulling out and transport of seedlings, and transplanting. Because the soil is not puddled, DSR also has a lower water requirement for crop establishment. Furthermore, the total crop cycle is shorter by 10−15 days because of the absence of transplanting shock. These features of DSR are of major importance for the Cauvery Delta (see below) because of the increasing scarcity of water for irrigation in the area. DSR can be readily adopted by small farmers as well as large farmers, provided that the required machinery is locally available (e.g., through custom hire). Best practice involves using a 2- or 4-wheel tractordrawn drill to seed in rows in dry or slightly moist soil.
Publication - Guidelines for Dry Seeded Rice (DSR): in the Terai and Mid Hills of Nepal(CSISA, 1999) Krishna Prasad Devkota; Sudhir-Yadav; Ranjit, J.D; Sherchan, D.P.; Regmi, A.P.; Akhtar, T.; Humphreys, E.; Chauhan, B.S.Dry seeded rice (DSR) is becoming an attractive option for farmers as it has a much lower labor requirement and establishment cost than manually transplanted rice. Labor for transplanting rice has become scarce and costly because laborers are shifting from agriculture to industry, public works, and overseas employment. DSR can be readily adopted by small farmers as well as large farmers, provided that the required machinery is locally available (e.g., through custom hire). Best practice involves using a 2- or 4-wheel tractor-drawn drill to seed in rows in nontilled or dry tilled soil, as for wheat. Because the soil is not puddled, DSR also has a lower water requirement for crop establishment.
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