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Assessing the benefits of research expenditures on maize production in South Africa

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  • Townsend, Rob F.
  • van Zyl, Johan
  • Thirtle, Colin G.
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    Abstract

    This paper focuses on assessing the benefits of research expenditures on maize production in South Africa. Both the production and supply function approaches are used to calculate elasticities of research expenditure on output and yield. Cointegration is used to establish long-run relationships between variables in these models. The lag structure of R&D expenditures on output is examined making use of the unrestricted, polynomial, beta and gamma distributions. The coefficients of these lag distributions were then used to calculate a rate of return to maize research expenditure, which was estimated as being between 28% and 39% per annum. These rates of return are high, mitigating in favour of more research expenditure rather than less.

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    File URL: http://purl.umn.edu/54718
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    Bibliographic Info

    Article provided by Agricultural Economics Association of South Africa (AEASA) in its journal Agrekon.

    Volume (Year): 36 (1997)
    Issue (Month): 4 (December)
    Pages:

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    Handle: RePEc:ags:agreko:54718

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    Web page: http://www.aeasa.org.za/
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    Related research

    Keywords: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies;

    References

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    1. Zvi Griliches, 1958. "Research Costs and Social Returns: Hybrid Corn and Related Innovations," Journal of Political Economy, University of Chicago Press, vol. 66, pages 419.
    2. Jan Kmenta & James B. Ramsey, 1980. "Evaluation of Econometric Models," NBER Books, National Bureau of Economic Research, Inc, number kmen80-1, October.
    3. Michio Hatanaka & T. Dudley Wallace, 1980. "Multicollinearity and the Estimation of Low-Order Moments in Stable Lag Distributions," NBER Chapters, in: Evaluation of Econometric Models, pages 323-337 National Bureau of Economic Research, Inc.
    4. Alston, Julian M. & Pardey, Philip G. & Taylor, Michael J., 2001. "Agricultural science policy," Food policy statements 32, International Food Policy Research Institute (IFPRI).
    5. Andrews, Donald W. K. & Fair, Ray C., 1992. "Estimation of polynomial distributed lags and leads with end point constraints," Journal of Econometrics, Elsevier, vol. 53(1-3), pages 123-139.
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    Cited by:
    1. Ortmann, Gerald F., 2005. "Promoting the competitiveness of South African agriculture in a dynamic economic and political environment," Agrekon, Agricultural Economics Association of South Africa (AEASA), vol. 44(3), September.
    2. Thirtle, Colin G. & Townsend, Rob F. & Amadi, Juliana & Lusigi, Angela & van Zyl, Johan, 1998. "The Rate Of Return On Expenditures Of The South African Agricultural Research Council (Arc)," Agrekon, Agricultural Economics Association of South Africa (AEASA), vol. 37(4), December.

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