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Studies on Emission Potentiality of Nitrous Oxide from Wheat Field under Changed Climate


Affiliations
1 Department of Agricultural Meteorology and Physics, Bidhan Chandra Krishi Viswavidyalaya, Nadia 741 252, India
2 Department of Environmental Science, University of Kalyani, Kalyani, Nadia 741 235, India
 

Emission of nitrous oxide (N2O) from wheat field under various management practices was measured over two years. The experimental design consisted of two winter wheat (Triticum austivum L.) varieties with three nutritional treatments and two dates of sowing. The results revealed that soil moisture and soil temperature at different depths are the key parameters influencing N2O emission. A positive increase of N2O flux was noticed with increasing soil moisture along with decreasing soil temperature at specific wheat phenophases. Maximum N2O was emitted at the flowering stage. Individual factors, viz. nutrient, date of sowing and variety, and an interactive combination of these factors significantly influenced N2O emission rates. It was also found that there was no significant association between wheat grain yield and seasonal N2O flux.

Keywords

Emission Potentiality, Nitrous Oxide, Soil Environment, Wheat Yield.
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  • Studies on Emission Potentiality of Nitrous Oxide from Wheat Field under Changed Climate

Abstract Views: 244  |  PDF Views: 91

Authors

G. Saha
Department of Agricultural Meteorology and Physics, Bidhan Chandra Krishi Viswavidyalaya, Nadia 741 252, India
S. Karmakar
Department of Environmental Science, University of Kalyani, Kalyani, Nadia 741 235, India
B. Kar
Department of Environmental Science, University of Kalyani, Kalyani, Nadia 741 235, India
R. Bhattacharya
Department of Environmental Science, University of Kalyani, Kalyani, Nadia 741 235, India
G. Singh
Department of Agricultural Meteorology and Physics, Bidhan Chandra Krishi Viswavidyalaya, Nadia 741 252, India

Abstract


Emission of nitrous oxide (N2O) from wheat field under various management practices was measured over two years. The experimental design consisted of two winter wheat (Triticum austivum L.) varieties with three nutritional treatments and two dates of sowing. The results revealed that soil moisture and soil temperature at different depths are the key parameters influencing N2O emission. A positive increase of N2O flux was noticed with increasing soil moisture along with decreasing soil temperature at specific wheat phenophases. Maximum N2O was emitted at the flowering stage. Individual factors, viz. nutrient, date of sowing and variety, and an interactive combination of these factors significantly influenced N2O emission rates. It was also found that there was no significant association between wheat grain yield and seasonal N2O flux.

Keywords


Emission Potentiality, Nitrous Oxide, Soil Environment, Wheat Yield.



DOI: https://doi.org/10.18520/cs%2Fv109%2Fi4%2F768-774