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
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 un...
| Autores principales: | , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Informa UK Limited
2020
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| Acceso en línea: | https://hdl.handle.net/10568/106955 |
| _version_ | 1855528624037298176 |
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| author | Sapkota, Tek Bahadur Singh, Love Kumar Yadav, Arvind Kumar Khatri-Chhetri, Arun Jat, Hanuman Sahay Sharma, Parbodh Chander Jat, Mangi Lal Stirling, Clare M |
| author_browse | Jat, Hanuman Sahay Jat, Mangi Lal Khatri-Chhetri, Arun Sapkota, Tek Bahadur Sharma, Parbodh Chander Singh, Love Kumar Stirling, Clare M Yadav, Arvind Kumar |
| author_facet | Sapkota, Tek Bahadur Singh, Love Kumar Yadav, Arvind Kumar Khatri-Chhetri, Arun Jat, Hanuman Sahay Sharma, Parbodh Chander Jat, Mangi Lal Stirling, Clare M |
| author_sort | Sapkota, Tek Bahadur |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| 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. |
| format | Journal Article |
| id | CGSpace106955 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace1069552025-02-19T14:22:16Z 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 Sapkota, Tek Bahadur Singh, Love Kumar Yadav, Arvind Kumar Khatri-Chhetri, Arun Jat, Hanuman Sahay Sharma, Parbodh Chander Jat, Mangi Lal Stirling, Clare M agriculture climate change food security fertilisers nitrous oxide rice wheat 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. 2020-12-05 2020-02-05T20:20:07Z 2020-02-05T20:20:07Z Journal Article https://hdl.handle.net/10568/106955 en Open Access Informa UK Limited Sapkota TB, Singh LK, Yadav AK, Khatri-Chhetri A, Jat HS, Sharma PC, Jat ML, Stirling CM. 2020. 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. Archives of Agronomy and Soil Science 66(14):2039-2054. |
| spellingShingle | agriculture climate change food security fertilisers nitrous oxide rice wheat Sapkota, Tek Bahadur Singh, Love Kumar Yadav, Arvind Kumar Khatri-Chhetri, Arun Jat, Hanuman Sahay Sharma, Parbodh Chander Jat, Mangi Lal Stirling, Clare M 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 |
| title | 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 |
| title_full | 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 |
| title_fullStr | 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 |
| title_full_unstemmed | 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 |
| title_short | 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 |
| title_sort | 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 |
| topic | agriculture climate change food security fertilisers nitrous oxide rice wheat |
| url | https://hdl.handle.net/10568/106955 |
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