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Benefits of Public R&D in U.S. Agriculture: Spill-Ins, Extension, and Roads

Author

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  • Wang, Sun Ling
  • Ball, V. Eldon
  • Fulginiti, Lilyan E.
  • Plastina, Alejandro S.

Abstract

This paper uses panel data for the 1980-2004 period to estimate the contributions of public research to U.S. agricultural productivity growth. Local and social internal rates of return are estimated accounting for the effects of R&D spill-in, extension activities and road density. R&D spill-in proxies were constructed based on both geographic proximity and production profile to examine the sensitivity of the rates of return to these alternatives. We find that extension activities, road density, and R&D spill-ins, play an important role in enhancing the benefit of public R&D investments. We also find that the local internal rates of return, although high, have declined through time along with investments in extension, while the social rates have not. Yet, the social rates of return are not robust to the choice of spill-in proxy.

Suggested Citation

  • Wang, Sun Ling & Ball, V. Eldon & Fulginiti, Lilyan E. & Plastina, Alejandro S., 2012. "Benefits of Public R&D in U.S. Agriculture: Spill-Ins, Extension, and Roads," 2012 Conference, August 18-24, 2012, Foz do Iguacu, Brazil 126368, International Association of Agricultural Economists.
  • Handle: RePEc:ags:iaae12:126368
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    References listed on IDEAS

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    1. Philip G. Pardey & Julian M. Alston & Connie Chan-Kang & Eduardo C. Magalhães & Stephen A. Vosti, 2006. "International and Institutional R&D Spillovers: Attribution of Benefits among Sources for Brazil's New Crop Varieties," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 88(1), pages 104-123.
    2. Alejandro Onofri & Lilyan Fulginiti, 2008. "Public inputs and dynamic producer behavior: endogenous growth in U.S. agriculture," Journal of Productivity Analysis, Springer, vol. 30(1), pages 13-28, August.
    3. Roberto Esposti, 2003. "Public R&D investment and cost structure in Italian agriculture, 1960--1995," European Review of Agricultural Economics, Foundation for the European Review of Agricultural Economics, vol. 30(4), pages 509-537, December.
    4. Huffman, Wallace, 2009. "Measuring Public Agricultural Research Capital and Its Contribution to State Agricultural Productivity," Staff General Research Papers Archive 13123, Iowa State University, Department of Economics.
    5. Alejandro Nin Pratt & Bingxin Yu & Shenggen Fan, 2009. "The total factor productivity in China and India: new measures and approaches," China Agricultural Economic Review, Emerald Group Publishing, vol. 1(1), pages 9-22, February.
    6. Daniel K. N. Johnson & Robert E. Evenson, 1999. "R&D Spillovers To Agriculture: Measurement And Application," Contemporary Economic Policy, Western Economic Association International, vol. 17(4), pages 432-456, October.
    7. V. Eldon Ball & Frank M. Gollop & Alison Kelly-Hawke & Gregory P. Swinand, 1999. "Patterns of State Productivity Growth in the U.S. Farm Sector: Linking State and Aggregate Models," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 81(1), pages 164-179.
    8. Alejandro Plastina & Lilyan Fulginiti, 2012. "Rates of return to public agricultural research in 48 US states," Journal of Productivity Analysis, Springer, vol. 37(2), pages 95-113, April.
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    11. Alan McCunn & Wallace E. Huffman, 2000. "Convergence in U.S. Productivity Growth for Agriculture: Implications of Interstate Research Spillovers for Funding Agricultural Research," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 82(2), pages 370-388.
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    Cited by:

    1. Hurley, Terrance M. & Pardey, Philip G. & Rao, Xudong & Andrade, Robert S., 2016. "Returns to Food and Agricultural R&D Investments Worldwide, 1958-2015," Briefs 249356, University of Minnesota, International Science and Technology Practice and Policy.

    More about this item

    Keywords

    productivity; public R&D; R&D spill-ins; extension; road density; internal rate of return; cost function.; Agricultural and Food Policy; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Q16; O3; O4;

    JEL classification:

    • Q16 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - R&D; Agricultural Technology; Biofuels; Agricultural Extension Services
    • O3 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights
    • O4 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity

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