Improvement in irrigation water use efficiency: a strategy for climate change adaptation and sustainable development of Vietnamese tea production

Nguyen Bich Hong () and Mitsuyasu Yabe
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Nguyen Bich Hong: Kyushu University
Mitsuyasu Yabe: Kyushu University

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2017, vol. 19, issue 4, No 8, 1247-1263

Abstract: Abstract Irrigation is indispensable to overcome insufficient rainfall and to achieve a stabilized yield for tea production. As the severe scarcity of water resources because of climate change, water conservation through efficient irrigation has turned into a vital strategy for tea sector in solving this rising challenge. This paper analyzes irrigation water use efficiency of small-scale tea farms in Vietnam and identifies its determinants applying stochastic frontier analysis. Results showed that under decreasing returns to scale, the mean irrigation water use efficiency was 42.19 %, indicating the existence of substantial water waste. If farmers become more efficient in using water, saving 57.81 % of irrigation water is possible unaccompanied by reducing the observed output. The factors affecting tea farms’ irrigation water use efficiency were investigated by Tobit model. Gender, water shortage awareness, soil and water conservation practice, off-farm income share, extension services access and well water utilization showed significant influence on the efficiency of irrigation water. The study’ results provide insights to policymakers in implementing better water resource management amid climate change.

Keywords: Irrigation water use efficiency; Tea production; Climate change; Vietnam; Stochastic frontier analysis (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1007/s10668-016-9793-8

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