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Nitrogen management under conservation agriculture in Cereal-based Systems

By: Jat, H.S.
Contributor(s): Jat, R.K | Singh, Y | Parihar, C.M | Jat, S.L | Tetarwal, J. P | Sidhu, H.S | Jat, M.L.
Material type: materialTypeLabelArticlePublisher: India : FAI, 2016Subject(s): Nitrogen | Conservation agricultureOnline resources: Access only for CIMMYT Staff In: Indian Journal of Fertilisers v. 12, no. 4, p. 76-91Summary: With the advent of Green Revolution, food grain production in India increased substantially over time and has primarily been guided by (a) the improvement of genetic potentials of crops; (b) higher application of external inputs (nutrients, water, pesticides); and (c) increased mechanization. However, agriculture in India is currently facing triple challenges of natural resource degradation, decelerating productivity growth of cereal crops, and diminishing farm income. The emerging challenges of climate change further aggravate the problem, posing a threat to future food security. Conservation agriculture (CA)-based management has emerged as a new paradigm globally, to achieve goals of sustainable agricultural production. However, the soil nutrient dynamics over time will be varied under CA compared to conventional plough-based farming practices. Conventional fertiliser recommendations (rate, time and method) calibrated under conventional tillage (CT)-based management do not necessarily become valid under CA (no-till, surface residue and diversified rotation) under all the production environments and circumstances. Some research efforts on N management under CA have been made but in isolation and hence the systematic information on layering precision N management under CA in cereal-based systems is lacking. In this paper, we have made efforts to synthesize the information available in relation to N-management under CA in cereal-based systems in India to guide future fertiliser N management research and development in India.
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Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

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With the advent of Green Revolution, food grain production in India increased substantially over time and has primarily been guided by (a) the improvement of genetic potentials of crops; (b) higher application of external inputs (nutrients, water, pesticides); and (c) increased mechanization. However, agriculture in India is currently facing triple challenges of natural resource degradation, decelerating productivity growth of cereal crops, and diminishing farm income. The emerging challenges of climate change further aggravate the problem, posing a threat to future food security. Conservation agriculture (CA)-based management has emerged as a new paradigm globally, to achieve goals of sustainable agricultural production. However, the soil nutrient dynamics over time will be varied under CA compared to conventional plough-based farming practices. Conventional fertiliser recommendations (rate, time and method) calibrated under conventional tillage (CT)-based management do not necessarily become valid under CA (no-till, surface residue and diversified rotation) under all the production environments and circumstances. Some research efforts on N management under CA have been made but in isolation and hence the systematic information on layering precision N management under CA in cereal-based systems is lacking. In this paper, we have made efforts to synthesize the information available in relation to N-management under CA in cereal-based systems in India to guide future fertiliser N management research and development in India.

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