Greenhouse gas emissions from selected cropping patterns in Bangladesh

Abstract

There are many cropping systems followed in Bangladesh for enhancing cropping intensity and increasing crop production, but greenhouse gas (GHG) emission from agricultural felds are mostly reported on country basis. In order to estimate of GHG emission from agriculture felds, Cool Farm Tool Beta-3 was used to determine total GHG from selected cropping systems. It was found that non-rice based cropping system had lower global warming potential (GWP) than rice based cropping systems. Among the rice based cropping systems, Onion-Jute-Fallow, Jute-Rice-Fallow, Wheat-Mungbean-Rice and Maize-Fallow-Rice systems are relatively more suitable for reducing GHG emission and subsequent GWP. There are spatial variations in CH 4 emissions and the higher amounts were found in Mymensingh and Dinajpur districts in Bangladesh. In 2013–14, about 1.56 Tg year -1 CH 4 emissions took place from paddy feld in Bangladesh. Further study is required for validation and suggesting suitable mitigation strategies to check the GHG emission in Bangladesh.