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GM Technology Adoption, Production Risk and On-farm Varietal Diversity

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  • Krishna, Vijesh V.
  • Zilberman, David
  • Qaim, Matin

Abstract

This paper examines the impact of transgenic technology adoption on varietal diversity. Transgenic pest-resistant varieties are hypothesized to reduce farmers’ demand for on-farm diversity through an act of substitution, as both serve as production risk reducing instruments. This adverse agro-biodiversity impact might be partially counteracted by an expanding seed sector, supplying a large number of transgenic varieties. The case of Bt cotton in India is taken for empirical illustration. The production function analyses show that both Bt technology and on-farm varietal diversity enhance yield, while reducing the production risk. With few Bt varieties available in the first years, technology adoption entailed a reduction in on-farm varietal diversity. This effect, however, was partially offset by more Bt varieties becoming available over time.

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Bibliographic Info

Paper provided by Agricultural and Applied Economics Association in its series 2009 Annual Meeting, July 26-28, 2009, Milwaukee, Wisconsin with number 49173.

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Date of creation: 2009
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Handle: RePEc:ags:aaea09:49173

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Keywords: Agro-biodiversity; Bt cotton; production risk; transgenic technology; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Productivity Analysis; Risk and Uncertainty;

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References

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  1. Matin Qaim, 2005. "Agricultural Biotechnology Adoption in Developing Countries," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 87(5), pages 1317-1324.
  2. Latha Nagarajan & Melinda Smale & Paul Glewwe, 2007. "Determinants of millet diversity at the household-farm and village-community levels in the drylands of India: the role of local seed systems," Agricultural Economics, International Association of Agricultural Economists, vol. 36(2), pages 157-167, 03.
  3. Matin Qaim & Arjunan Subramanian & Gopal Naik & David Zilberman, 2006. "Adoption of Bt Cotton and Impact Variability: Insights from India," Review of Agricultural Economics, Agricultural and Applied Economics Association, vol. 28(1), pages 48-58.
  4. Batie, Sandra S. & Ervin, David E., 2001. "Transgenic crops and the environment: missing markets and public roles," Environment and Development Economics, Cambridge University Press, vol. 6(04), pages 435-457, October.
  5. Di Falco, Salvatore & Chavas, Jean-Paul & Smale, Melinda, 2006. "Farmer management of production risk on degraded lands: the role of wheat genetic diversity in Tigray Region, Ethiopia," EPTD discussion papers 153, International Food Policy Research Institute (IFPRI).
  6. Just, Richard E. & Pope, Rulon D., 1978. "Stochastic specification of production functions and economic implications," Journal of Econometrics, Elsevier, vol. 7(1), pages 67-86, February.
  7. Melinda Smale & Jason Hartell & Paul W. Heisey & Ben Senauer, 1998. "The Contribution of Genetic Resources and Diversity to Wheat Production in the Punjab of Pakistan," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 80(3), pages 482-493.
  8. Benjamin Crost & Bhavani Shankar & Richard Bennett & Stephen Morse, 2007. "Bias from Farmer Self-Selection in Genetically Modified Crop Productivity Estimates: Evidence from Indian Data," Journal of Agricultural Economics, Wiley Blackwell, vol. 58(1), pages 24-36, 02.
  9. Salvatore Di Falco & Charles Perrings, 2003. "Crop Genetic Diversity, Productivity and Stability of Agroecosystems. A Theoretical and Empirical Investigation," Scottish Journal of Political Economy, Scottish Economic Society, vol. 50(2), pages 207-216, 05.
  10. Smale, Melinda, 1997. "The Green Revolution and wheat genetic diversity: Some unfounded assumptions," World Development, Elsevier, vol. 25(8), pages 1257-1269, August.
  11. Salvatore Di Falco & Jean-Paul Chavas & Melinda Smale, 2007. "Farmer management of production risk on degraded lands: the role of wheat variety diversity in the Tigray region, Ethiopia," Agricultural Economics, International Association of Agricultural Economists, vol. 36(2), pages 147-156, 03.
  12. Subal C. Kumbhakar & Ragnar Tveter�s, 2003. "Risk Preferences, Production Risk and Firm Heterogeneity," Scandinavian Journal of Economics, Wiley Blackwell, vol. 105(2), pages 275-293, 06.
  13. Koundouri, Phoebe & Nauges, Celine, 2005. "On Production Function Estimation with Selectivity and Risk Considerations," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 30(03), December.
  14. Stefan Baumgärtner & Martin F. Quaas, 2007. "Agro-biodiversity as natural insurance and the development of financial insurance markets," Working Paper Series in Economics 61, University of Lüneburg, Institute of Economics.
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