Emission of N2O on pulse–rice crop rotation in upland |
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| Authors: | TS Ramulu SK Sahoo RK Mohapatra G Roy Chaudhury SN Das |
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| Institution: | 1. Laboratory of Air Pollution and Global Climate Change, Department of Botany, Banaras Hindu University, Varanasi, India;2. Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India;1. Carbon Management and Sequestration Center, Ohio State University, Columbus, OH, USA;2. Radio and Atmospheric Sciences Division, National Physical Laboratory, New Delhi, India;3. Institute of Biological and Environmental Sciences, University of Aberdeen, United Kingdom;1. Department of Environmental Science, Tezpur University, Tezpur, 784028, Assam, India;2. Department of Chemical Sciences, Tezpur University, Tezpur, 784028, Assam, India;1. School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India;2. Indira Gandhi National Open University, New Delhi 110068, India;3. Center for Environmental Studies, Earth Sciences and Climate Change Division, The Energy and Resources Institute, New Delhi, 110003, India;4. Soil Science and Microbiology Laboratory, Crop Production Division, Central Rice Research Institute, Cuttack 753006, India;5. School of Biotechnology, KIIT University, Bhubaneswar, 751024, India |
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| Abstract: | The Seasonally Integrated Flux (SIF) of N2O emission during pulse cultivation in Rabi season (Season-I: December to April) in rain-fed uplands of Orissa, was found to be 17.7 ± 0.07, 18.7 ± 0.16 and 43.3 ± 0.14 gha?1 for horse gram (HG), black gram (BG) and green gram (GG) respectively. During the subsequent Rabi season (Season-II), the SIF of N2O for BG and GG cultivated in the same fields were 20.9 ± 0.24 and 38.0 ± 0.42 gha?1 respectively. Similarly SIF values during rice cultivation with different cultivars have also been calculated to be in the range ?20.05 ± 0.33 to 21.98 ± 0.29. Statistical analysis showed good correlation of N2O emission with climatic and soil parameters like temperature, nutrient N and organic matter in soil during pulse cultivation. Multivariate analysis was carried out to factorize the results obtained. Using student ‘t’ test, the N2O emission was observed to be similar for two consecutive Rabi seasons for pulses like BG and GG. |
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