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The Cost of Coexistence between Bt Maize and Open Pollinated Maize Varieties in Lowland Coastal Kenya


  • Tumusiime, Emmanuel
  • De Groote, Hugo
  • Vitale, Jeffrey D.
  • Adam, Brian D.


Kenya is currently in the process of introducing genetically modified maize (Bt maize). A major concern is that the Bt gene might cross into local varieties through cross pollination. Current regulatory strategies to ensure coexistence of the two cropping systems at the farm level rely on spatial isolation measures-separation distances and/or buffer zones. However, the interaction of practical measures and costs of spatial isolation with the farmer’s economic incentive to plant a Bt maize crop have not been studied in Kenya. The purpose of this study was to analyze the technical and economic feasibility of the implementation of spatial coexistence measures. Using spatial geo-referenced data from the actual agricultural landscape in lowland coastal Kenya, the study finds that flexible separation distances hold the possibility of ensuring coexistence in the region, but will be difficult to implement. Rigid buffer strips on the other hand are not consistent with the producers’ economic incentive to plant a Bt maize crop.

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  • Tumusiime, Emmanuel & De Groote, Hugo & Vitale, Jeffrey D. & Adam, Brian D., 2009. "The Cost of Coexistence between Bt Maize and Open Pollinated Maize Varieties in Lowland Coastal Kenya," 2009 Annual Meeting, January 31-February 3, 2009, Atlanta, Georgia 46726, Southern Agricultural Economics Association.
  • Handle: RePEc:ags:saeana:46726

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    References listed on IDEAS

    1. Kahneman, Daniel & Tversky, Amos, 1979. "Prospect Theory: An Analysis of Decision under Risk," Econometrica, Econometric Society, vol. 47(2), pages 263-291, March.
    2. Murray Fulton & Konstantinos Giannakas, 2004. "Inserting GM Products into the Food Chain: The Market and Welfare Effects of Different Labeling and Regulatory Regimes," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 86(1), pages 42-60.
    3. David R. Bell & James M. Lattin, 2000. "Looking for Loss Aversion in Scanner Panel Data: The Confounding Effect of Price Response Heterogeneity," Marketing Science, INFORMS, vol. 19(2), pages 185-200, May.
    4. Amos Tversky & Daniel Kahneman, 1991. "Loss Aversion in Riskless Choice: A Reference-Dependent Model," The Quarterly Journal of Economics, Oxford University Press, vol. 106(4), pages 1039-1061.
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    Cited by:

    1. Jeffrey Vitale & Marc Ouattarra & Gaspard Vognan, 2011. "Enhancing Sustainability of Cotton Production Systems in West Africa: A Summary of Empirical Evidence from Burkina Faso," Sustainability, MDPI, Open Access Journal, vol. 3(8), pages 1-34, July.
    2. Regier, Gregory K & Dalton, Timothy J, 2014. "Labour savings of Roundup Ready maize: Impact on cost and input substitution for South African smallholders," African Journal of Agricultural and Resource Economics, African Association of Agricultural Economists, vol. 9(3), August.

    More about this item


    Coexistence; Regulatory; Spatial; Agro-ecological zone; GM crops; Resource /Energy Economics and Policy;

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