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Efficient irrigation and water conservation: Evidence from South India

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  • Fishman, Ram
  • Giné, Xavier
  • Jacoby, Hanan G.

Abstract

Widespread adoption of efficient irrigation technologies, including drip irrigation, has been proposed to limit groundwater over-exploitation, especially in water-stressed South Asia. This paper evaluates the potential productivity and water-saving benefits of smallholder drip irrigation by conducting a randomized control trial in Andhra Pradesh, India. A group of well-owners was offered a subsidy to adopt drip irrigation, while a comparable group acted as controls. After three years, the drip group shifted more into horticultural crops, enjoyed higher farm profit, and transferred (primarily through cash sales) more of its groundwater to adjacent plots. There is no difference in groundwater pumping, which is constrained by electricity rationing in this setting. The evidence thus suggests that drip adoption in South India, while increasing irrigation efficiency, will not save groundwater.

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  • Fishman, Ram & Giné, Xavier & Jacoby, Hanan G., 2023. "Efficient irrigation and water conservation: Evidence from South India," Journal of Development Economics, Elsevier, vol. 162(C).
    • Handle: RePEc:eee:deveco:v:162:y:2023:i:c:s0304387823000068
    DOI: 10.1016/j.jdeveco.2023.103051
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    Cited by:

    1. Mattoussi, Wided & Mattoussi, Foued & Larnaout, Afrah, 2023. "Optimal subsidization for the adoption of new irrigation technologies," Economic Analysis and Policy, Elsevier, vol. 78(C), pages 1126-1141.

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    More about this item

    Keywords

    Water-saving technology; Groundwater depletion; Agricultural productivity;
    All these keywords.

    JEL classification:

    • O13 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Agriculture; Natural Resources; Environment; Other Primary Products
    • Q25 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Water

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