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Journal of Integrative Agriculture  2015, Vol. 14 Issue (8): 1524-1533    DOI: 10.1016/S2095-3119(15)61093-0
Special Focus: Systems Research Helping toMeet the Needs and Managing the Trade-offs of a Changing W Advanced Online Publication | Current Issue | Archive | Adv Search |
Climate change adaptation, greenhouse gas mitigation and economic profitability of conservation agriculture: Some examples from cereal systems of Indo-Gangetic Plains
 Tek B Sapkota, M L Jat, Jeetendra P Aryal, R K Jat, Arun Khatri-Chhetri
1、International Maize and Wheat Improvement Center, New Delhi 110012, India
2、Borlaug Institute for South Asia, Bihar 848125, India
3、Consultative Group of International Agricultural Research (CGIAR) Research Program on Climate Change, Agriculture and Food Security (CCAFS), International Water Management Institute, New Delhi 110012, India
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摘要  Achieving sustainability of the cereal system in the Indo-Gangetic Plains (IGP) of India under progressive climate change and variability necessitates adoption of practices and technologies that increase food production, adaptation and mitigation in a sustainable way. This paper examines conservation agriculture (CA) from the perspective of: (i) increased yield and farm income, (ii) adaptation to heat and water stresses, and (iii) reduction in greenhouse gas (GHGs) emissions. The analyses and conclusions are based on the literature and evidences from a large number of on-station as well as farmers’ field trials on CA in the cereal systems of IGP. Our analyses show that CA-based system substantially reduces the production cost (up to 23%) but produces equal or even higher than conventional system; thereby increasing economic profitability of production system. CA-based production systems also moderated the effect of high temperature (reduced canopy temperature by 1–4°C) and increased irrigation water productivity by 66–100% compared to traditional production systems thus well adapting to water and heat stress situations of IGP. Our continuous monitoring of soil flux of CO2, N2O and CH4 revealed that CA-based rice-wheat systems emit 10–15% less GHGs than conventional systems. This is the first time that CA and its components are synthesized and analyzed from food security-climate change nexus. From this holistic analysis, we suggest that wide-scale promotion of suitable CA practices by integrating into national agriculture development strategy is a way forward to address food security, climate change adaptation and mitigation challenges faced by present agriculture.

Abstract  Achieving sustainability of the cereal system in the Indo-Gangetic Plains (IGP) of India under progressive climate change and variability necessitates adoption of practices and technologies that increase food production, adaptation and mitigation in a sustainable way. This paper examines conservation agriculture (CA) from the perspective of: (i) increased yield and farm income, (ii) adaptation to heat and water stresses, and (iii) reduction in greenhouse gas (GHGs) emissions. The analyses and conclusions are based on the literature and evidences from a large number of on-station as well as farmers’ field trials on CA in the cereal systems of IGP. Our analyses show that CA-based system substantially reduces the production cost (up to 23%) but produces equal or even higher than conventional system; thereby increasing economic profitability of production system. CA-based production systems also moderated the effect of high temperature (reduced canopy temperature by 1–4°C) and increased irrigation water productivity by 66–100% compared to traditional production systems thus well adapting to water and heat stress situations of IGP. Our continuous monitoring of soil flux of CO2, N2O and CH4 revealed that CA-based rice-wheat systems emit 10–15% less GHGs than conventional systems. This is the first time that CA and its components are synthesized and analyzed from food security-climate change nexus. From this holistic analysis, we suggest that wide-scale promotion of suitable CA practices by integrating into national agriculture development strategy is a way forward to address food security, climate change adaptation and mitigation challenges faced by present agriculture.
Keywords:  zero-tillage       residue retention       climate change       sustainability       conservation agriculture  
Received: 16 March 2015   Accepted:
Fund: 

Financial supports for these works come from Bayer Crop- Science, Indian Council of Agricultural Research (ICAR) and CGIAR’s research program (CRP) on Climate Change Agriculture and Food Security (CCAFS).

Corresponding Authors:  Tek B Sapkota, E-mail: t.sapkota@cgiar.org   
About author:  Tek B Sapkota, E-mail: t.sapkota@cgiar.org

Cite this article: 

Tek B Sapkota, M L Jat, Jeetendra P Aryal, R K Jat, Arun Khatri-Chhetri. 2015. Climate change adaptation, greenhouse gas mitigation and economic profitability of conservation agriculture: Some examples from cereal systems of Indo-Gangetic Plains. Journal of Integrative Agriculture, 14(8): 1524-1533.

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