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Mitigation of greenhouse gas emission from rice–wheat system of the Indo-Gangetic plains: Through tillage, irrigation and fertilizer management

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Title Mitigation of greenhouse gas emission from rice–wheat system of the Indo-Gangetic plains: Through tillage, irrigation and fertilizer management
Not Available
 
Creator Dipak Kumar Gupta, A. Bhatia, A. Kumar, T. K. Das, N. Jain, R. Tomer, Sandeep K. Malyan, R. K. Fagodiya, R. Dubey and H. Pathak
 
Subject Zero tilled wheat, Direct seeded rice, Neem oil coated urea, Rice straw, Rice–wheat cropping system
 
Description Not Available
Rice–wheat cropping systems (RWCS) of the Indo - Gangetic plains (IGP) of India are tillage, water and
energy intensive and an important source of greenhouse gas (GHG) emission. Developing agronomic
management in RWCS that lead to minimum adverse impact on soil, enhances water use efficiency,
reduces GHG emission and are climate resilient is required. The aim of this study was to evaluate different
combinations of GHG mitigation technologies for rice and wheat and to
find suitable low carbon options
for RWCS in the IGP. Seven management systems i.e. conventionally tilled wheat (CTW); zero tilled wheat
(ZTW); transplanted puddled rice (TPR); dry direct seeded rice (DSR); intermittent wetting and drying
(IWD); application of neem oil coated urea (NOCU); and surface application of rice residue (RR) were
experimented in six combination of rotations [CTW - TPR, ZTW - TPR, ZTW - IWD, ZTW - DSR, ZTW + RR - DSR
and (ZTW - TPR) + NOCU] for two consecutive years. Among these rotations, ZTW - DSR and ZTW + RR - DSR
showed the lowest global warming potential (GWP) and GHG intensity in both the years. Adoption of
these systems in the Indian - IGP can reduce GWP of the conventional RWCS (CTW - TPR) by 44 - 47%
without any significant loss in the system yield. This was mainly due to significantly low CH4 emission
(82.3 - 87.2%) in DSR as compared to TPR due to prolonged aerobic condition under DSR. However,
frequent wetting and drying in DSR led to higher denitrification emissions of N2O (60 - 70%). Significantly
higher emissions of N2O were observed in ZTW treatments (8 - 11%). NOCU was found effective in
reducing N2O emission from ZTW (17.8 - 20.5%) leading to lower GWP as compared to CTW. Application of
rice residue in ZTW treatment also reduced N2O emission (11 - 12.8%). There was no significant effect of
different treatments in rice on GHG emission from the succeeding wheat crop; however, ZTW and
ZTW + RR were found to enhance CH4 emission from the succeeding rice treatments.
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Date 2018-11-15T08:27:30Z
2018-11-15T08:27:30Z
2016
 
Type Research Paper
 
Identifier Dipak Kumar Gupta, A. Bhatia, A. Kumar, T. K. Das, N.Jain, R. Tomer, Sandeep K. Malyan, R. K. Fagodiya, R. Dubey, H. Pathak, (2016). Mitigation of green house gas emission from rice–wheat system of the Indo-Gangetic plains:Through tillage, irrigation and fertilizer management. Agriculture, Ecosystem and Environment. 230, 1-9
Not Available
http://krishi.icar.gov.in/Publication/handle/123456789/11449
 
Language English
 
Relation Not Available;
 
Publisher Elsevier