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Nitrous oxide emission and mitigation from maize–wheat rotation in the upper Indo-Gangetic Plains

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Title Nitrous oxide emission and mitigation from maize–wheat rotation in the upper Indo-Gangetic Plains
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Creator Ram Kishor Fagodiya
Himanshu Pathak
Arti Bhatia
Niveta Jain
Dipak Kumar Gupta
Amit Kumar
Sandeep K. Malyan
Rachana Dubey
Sheetal Radhakrishanan
Ritu Tomer
 
Subject Indo-Gangetic Plains; maize–wheat rotation; nitrous oxide emission; grain yield
 
Description Not Available
Due to its lower water requirement, methane emission and soil degradation, a maize–wheat rotation (MWR) may be a more attractive alternative to rice–wheat rotation (RWR), in the upper Indo-Gangetic plains (IGP) of India. However, N2O emission from MWR needs to be quantified to propose management practices for N2O mitigation. A field experiment was conducted at the Indian Council of Agricultural Research-Indian Agricultural Research Institute (ICAR-IARI), New Delhi, to assess the impacts of various N sources on N2O emission and its mitigation from the MWR. Six treatments –N0 (control), urea, ureaþfarmyard manure (FYM), FYM, ureaþnitrification inhibitor (NI) and neem oil coated urea (NOCU) were investigated during 2012–2014. Results show ranges of N2O-N emissions from MWR of 0.59–0.69, 1.82–1.86, 1.81–1.85, 1.71–1.77, 1.38–1.52, 1.57–1.61 during 2012–2013, and of 0.62–0.68, 1.86–1.90, 1.78–1.84, 1.72–1.76, 1.40–1.46, 1.52–1.60 during 2013–2014, for N0, urea, ureaþFYM, FYM, ureaþNI and NOCU treatments, respectively. The 2-year pooled N2O-N emission of MWR decreased by 23% in ureaþNI and by 16% in NOCU with higher grain yield as compared to conventional urea application. Application of FYM with urea and FYM alone also reduced N2O-N emission; however, the grain yields of these treatments were decreased. Thus, the study suggests that the application of NOCU and NI with urea can mitigate N2O-N emissions from the maize and wheat crops. Hence, the use of NOCU and application of NI with urea could be a better option to mitigate N2O-N emissions from MWR of the upper IGP of India.
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Date 2021-08-16T11:25:39Z
2021-08-16T11:25:39Z
2019-08-01
 
Type Research Paper
 
Identifier Ram Kishor Fagodiya, Himanshu Pathak, Arti Bhatia, Niveta Jain, Dipak Kumar Gupta, Amit Kumar, Sandeep K. Malyan, Rachana Dubey, Sheetal Radhakrishanan & Ritu Tomer (2019): Nitrous oxide emission and mitigation from maize–wheat rotation in the upper Indo- Gangetic Plains, Carbon Management, DOI: 10.1080/17583004.2019.1650579
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http://krishi.icar.gov.in/jspui/handle/123456789/57359
 
Language English
 
Relation Not Available;
 
Publisher Taylor & Francis Group