Fertilizer induced nitrous oxide emissions from Vertisols and Alfisols during sweet sorghum cultivation in the Indian semi-arid tropics
OAR@ICRISAT
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Relation |
http://oar.icrisat.org/6128/
http://dx.doi.org/10.1016/j.scitotenv.2012.08.005 |
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Title |
Fertilizer induced nitrous oxide emissions from Vertisols and Alfisols during sweet sorghum cultivation in the Indian semi-arid tropics
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Creator |
Ramu, Karri
Watanabe, T Uchino, H Sahrawat, K L Wani, S P Ito, O |
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Subject |
Sorghum
Soil Science Fertilizer Appications |
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Description |
Nitrous oxide (N2O) emissions from Vertisols and Alfisols during sweet sorghum cultivation in the Indian semi-arid tropics were determined using a closed chamber technique during the rainy season (June–October) of 2010. The study included two treatments, nitrogen (N) at a rate of 90 kg/ha and a control without N fertilizer application. The N2O emissions strongly coincided with N fertilization and rainfall events. The cumulative N2O–N emission from Alfisols was 1.81 N2O–N kg/ha for 90 N treatment and 0.15 N2O–N kg/ha for the 0 N treatment. Similarly, the N2O–N emission from Vertisols was 0.70 N2O–N kg/ha for 90 N treatment and 0.09 N2O–N kg/ha for the 0 N treatment. The mean N2O–N emission factor for fertilizer induced emissions from the Alfisols was 0.90% as compared to 0.32% for Vertisols. Our results suggest that the N2O emissions are dependent on the soil properties. Therefore, the monitoring of N2O emissions from different agro-ecological regions, having different soil types, rainfall characteristics, cropping systems and crop management practices are necessary to develop comprehensive and accurate green house gas inventories.
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Publisher |
Elsevier
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Date |
2012
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Language |
en
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Rights |
—
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Identifier |
http://oar.icrisat.org/6128/1/STE_438_9-14_2012.pdf
Ramu, Karri and Watanabe, T and Uchino, H and Sahrawat, K L and Wani, S P and Ito, O (2012) Fertilizer induced nitrous oxide emissions from Vertisols and Alfisols during sweet sorghum cultivation in the Indian semi-arid tropics. Science of the Total Environment, 438. pp. 9-14. ISSN 0048-9697 |
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