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Global warming potential of rice-wheat cropping system of the Indo-Gangetic Plains

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Title Global warming potential of rice-wheat cropping system of the Indo-Gangetic Plains
Not Available
 
Creator Gupta, D.K.
Bhatia, A.
Kumar, A.
Chakrabarti, B.
Jain, N.
Pathak, H.
 
Subject Environmental science, Greenhouse gas emission. Agriculture
 
Description Not Available
The Indo-Gangetic plains (IGP) of India are dominated by rice (Oryza sativa L.)-wheat (Triticum aestivum L.)
cropping system (RWCS). Soil, climate, intensity and methods of rice and wheat cultivation differ in different parts
of the IGP. So, the emission of greenhouse gases (GHG) will also differ. Present study quantified GHG emission and
global warming potential (GWP) of RWCS of Haryana (Upper-IGP) and Bihar (Middle-IGP). A survey of rice-wheat
growing farmers in three districts of Haryana (Kaithal, Karnal and Kurukshetra) and Bihar (Begusarai, Bhagalpur and
Khagaria) was conducted. The survey data was used as inputs in InfoRCT model to simulate GHG emission in ricewheat systems of different districts. The selected areas in the IGP significantly differed in nitrogen, water and tillage
inputs resulting in differences in emission of methane (CH4), nitrous oxide (N2O) and carbon dioxide (CO2) and the
GWP. The simulated average GWP of conventional RWCS was 4268±179 kg CO2 equivalent/ha in Middle-IGP
(Bihar) and 10605±680 kg CO2 equivalent/ha in the Upper-IGP (Haryana). However, with use of resource conserving
technologies (RCTs) such as system of rice intensification (SRI), direct-seeded rice (DSR) and zero tillage wheat
(ZTW), there was lowering in GWP than conventional puddled transplanted rice and tilled wheat. Rice had higher
contribution than wheat towards GWP in both the states. The continuous flooded puddled transplanted rice (CFTPR),
use of electric pump for irrigation and application of high amount of nitrogenous fertilizer were identified as main
contributors of GWP. The site-specific intervention of RCTs may be recommended to reduce the emission of GHG
in the RWCS in the IGP.
Not Available
 
Date 2019-06-26T04:26:09Z
2019-06-26T04:26:09Z
2015-06-01
 
Type Research Paper
 
Identifier 12
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/20955
 
Language English
 
Relation Not Available;
 
Publisher ICAR