Kumar, A and Swain, D K and Dey, S and Singh, A and Kuttippurath, J and Chander, G and Kumar, A K. (2022) Nutrient management may reduce global warming potential of rice cultivation in subtropical India. Current Research in Environmental Sustainability, 4 (100169). ISSN 2666-0490
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Abstract
Agricultural practices contribute to greenhouse gas (GHG) emissions; therefore, it is essential to modify the production technologies. We analyzed decadal variation in CO2 and CH4 over a major rice cultivating area in subtropical India using GOSAT satellite data, which shows a sturdy increase. Furthermore, we carried out long- term field experiments with different nutrients management in the research farm to validate CERES–Rice (Crop Environment Resource Synthesis) and DNDC (De-nitrification and Decomposition model) models. The variations in Global warming potential per kg rice grain production over 90 years (2005–2095) are also projected. This study used a simulation technique to predict the rice yield using CERES–Rice and GWP using the DNDC model for three varied nutrient management treatments: chemical fertilizer (CF) at full (100%) recommended level (CF100), organic fertilizer using vermicompost at full recommendation (VC100), and integration of organic and chemical fertilizer (VC50 + CF50). The CF100 treatment showed the highest rate of increase in GWP as 0.014 and 0.021 kg CO2eq kg-grain season
| Item Type: | Article |
|---|---|
| Divisions: | Global Research Program - Resilient Farm and Food Systems |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Global warming potential (GWP), greenhouse gas (GHG), Nutrients management, Crop modeling and Food security |
| Subjects: | Others > Crop Modelling Others > Food Security |
| Depositing User: | Mr Ramesh MNR |
| Date Deposited: | 23 Jun 2022 08:09 |
| Last Modified: | 26 Jun 2022 10:23 |
| URI: | http://oar.icrisat.org/id/eprint/12001 |
| Official URL: | https://doi.org/10.1016/j.crsust.2022.100169 |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | We thank the Ministry of Human Resource Development, the Science and Engineering Research Board, Department of Science and Technology (DST), New Delhi, India, for funding the study. We also thank all the scientists who made available those data for this study. Finally, we thank IMD (Indian Meteorological Department) for climate data. |
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