Show simple item record

Identifying optimum rates of fertilizer nitrogen application to maximize economic return and minimize nitrous oxide emission from rice–wheat systems in the Indo-Gangetic Plains of India

Author: Sapkota, T.B.
Author: Singh, L.K.
Author: Yadav, A.K.
Author: Khatri-Chhetri, A.
Author: Jat, H.S.
Author: Sharma, P.C.
Author: Jat, M.L.
Author: Stirling, C.
Year: 2020
ISSN: 0365-0340 (Print)
URI: https://hdl.handle.net/10883/20782
Format: PDF
Language: English
Publisher: Taylor & Francis
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Place of Publication: United Kingdom
Pages: 2039-2054
Issue: 14
Volume: 66
DOI: 10.1080/03650340.2019.1708332
Description: Rice–wheat (RW) cropping system in India is a major source of N2O emissions. In such system, defining N rates that deliver minimal N2O emissions and economically optimum yield would benefit both food production and the environment. We measured yield and N2O fluxes from RW systems in Northwest IGP under two tillage systems and five N rates (0, 75, 150, 225 and 300 kg N ha−1) for both rice and wheat using static chamber method. Seasonal pattern of N2O emission was mainly influenced by fertilizer and water application events with no significant effect of tillage systems. Mean annual N2O emission from RW system was 1.49 kg N ha−1 in N75 plot and 2.97–3.04 in the plots receiving ≥150 kg N ha−1. On average, the yield-scaled N2O emissions of rice and wheat were 0.25 and 0.52 kg N2O–N mg−1, respectively. Our finding suggests that N rates between 120–200 kg N ha−1 in rice and 50–185 kg ha−1 in wheat provide the most economical returns and application rates beyond these ranges would be both economically and environmentally unsustainable. Within the range of N rate studied, fertilizer-induced N2O-EF for rice and wheat were 0.41% and 0.79%, respectively.
Country of Focus: INDIA
Agrovoc: NITROUS OXIDE
Agrovoc: EMISSION
Agrovoc: GREENHOUSE GAS EMISSIONS
Agrovoc: CROPPING SYSTEMS
Related Datasets: https://www.tandfonline.com/doi/figure/10.1080/03650340.2019.1708332?scroll=top&needAccess=true
Journal: Archives of Agronomy and Soil Science


Files in this item

Thumbnail

This item appears in the following Collection(s)

  • Sustainable Intensification
    Sustainable intensification agriculture including topics on cropping systems, agronomy, soil, mechanization, precision agriculture, etc.

Show simple item record