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

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 ris...

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Bibliographic Details
Published in:Environment, development and sustainability development and sustainability, 2017-08, Vol.19 (4), p.1247-1263
Main Authors: Hong, Nguyen Bich, Yabe, Mitsuyasu
Format: Article
Language:English
Subjects:
Adaptation
Agricultural extension
Agricultural practices
Change agents
Climate
Climate adaptation
Climate change
Conservation
Conservation practices
Earth and Environmental Science
Ecology
Economic Geology
Economic Growth
Efficiency
Environment
Environmental Economics
Environmental Management
Farm income
Farmers
Farming
Farms
Irrigation
Irrigation water
Off-farm
Policy making
Probability theory
Rainfall
Randomness
Resource management
Scarcity
Soil conservation
Soil investigations
Soil water
Stochasticity
Strategy
Sustainable Development
Tea
Unaccompanied
Water conservation
Water consumption
Water resources
Water resources management
Water scarcity
Water shortages
Water supply
Water use
Water use efficiency
Well water
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Summary: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.
ISSN:1387-585X
1573-2975
DOI:10.1007/s10668-016-9793-8