Enabling smallholder farmers to sustainably improve their food, energy and water nexus while achieving environmental and economic benefits

Mahesh K. Gathala, Alison M. Laing, T.P. Tiwari, J. Timsina, Md. S. Islam, A.K. Chowdhury, C. Chattopadhyay, A.K. Singh, B.P. Bhatt, R. Shrestha, N.C.D. Barma, D.S. Rana, Tamara M. Jackson and B. Gerard

Renewable and Sustainable Energy Reviews, 2020, vol. 120, issue C

Abstract: Traditional cropping practices in the Eastern Gangetic Plains, South Asia, are resource intensive, requiring large inputs of water, energy and human labor. They are also inefficient, with relatively low productivity for the inputs used although the climate, soil and water resources of the region indicate that greater productivity is achievable. In on-farm experiments conducted across three countries (Bangladesh, India, Nepal) we compared the performance of traditional and improved management practices to understand which better facilitated the production of food-grain crops while reducing energy and water demands, thus improving the sustainability of cropping system energy requirements. Benefits of improved over traditional management practices included increases of up to 10% in crop grain yields; up to 19% in water productivity; up to 26% in energy productivity; and reductions of up to 50% in labor. These metrics combined to reduce the cost of production under improved management by up to 22% and to increase gross margins by up to 100% (although in most instances gross margins increased by 12–32%). CO2-equivalent emissions reduced by 10%–17% compared to traditional practices.

Keywords: Cropping systems; South Asia; Energy efficiency; Water efficiency; Conservation agriculture-based sustainable intensification; Meta-analysis (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (17)

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DOI: 10.1016/j.rser.2019.109645

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