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The Long-Run Development Impacts of Agricultural Productivity Gains: Evidence from Irrigation Canals in India

Author

Listed:
  • Gollin, Douglas
  • Asher, Sam
  • Campion, Alison
  • Novosad, Paul

Abstract

How do investments in agricultural productivity translate into development and structural transformation? We estimate the long-run impacts of India's irrigation canals, which span 300,000+ km and deliver water to 130,000+ villages. Drawing on high-resolution data on every household, firm, village, and town in India, we use three empirical strategies to characterize the direct and spillover effects of large increases in agricultural productivity. Our findings are consistent with a spatial equilibrium model in which labor is mobile, and urban areas have non-farm productivity advantages. In the long run, areas directly treated by canal irrigation have sharply higher agricultural productivity and population density, but similar non-farm employment shares to non-canal areas. Persistent consumption gains accrue only to landowners and structural transformation occurs almost exclusively through the concentrated growth of regional towns. In the long run, the substantial productivity effects of canals were equilibrated through the movement of labor across space rather than within locations across sectors.

Suggested Citation

  • Gollin, Douglas & Asher, Sam & Campion, Alison & Novosad, Paul, 2022. "The Long-Run Development Impacts of Agricultural Productivity Gains: Evidence from Irrigation Canals in India," CEPR Discussion Papers 17414, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:17414
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    More about this item

    Keywords

    agriculture; Agricultural productivity; Irrigation; Structural transformation;
    All these keywords.

    JEL classification:

    • O13 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Agriculture; Natural Resources; Environment; Other Primary Products
    • O18 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Urban, Rural, Regional, and Transportation Analysis; Housing; Infrastructure
    • Q15 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Land Ownership and Tenure; Land Reform; Land Use; Irrigation; Agriculture and Environment

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