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Impact Assessment of Bt Corn Adoption in the Philippines

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Author Info

  • Mutuc, Maria Erlinda M.
  • Rejesus, Roderick M.
  • Pan, Suwen
  • Yorobe, Jose M., Jr.

Abstract

This article examines the impact of Bt corn adoption in the Philippines using an econometric approach that addresses simultaneity, selection, and censoring problems. Although previous literature emphasizes the importance of simultaneity and selection problems, this is the first study that addresses the issue of censoring in estimating the effects of Bt corn adoption at the farm in a developing country context. We show that Bt corn adoption provides modest but statistically significant increases in farm yields and profits. Furthermore, our results provide some evidence of inference errors that can potentially arise when censoring in the pesticide application variable is ignored in the estimation procedures.

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File URL: http://purl.umn.edu/120452
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Bibliographic Info

Article provided by Southern Agricultural Economics Association in its journal Journal of Agricultural and Applied Economics.

Volume (Year): 44 (2012)
Issue (Month): 01 (February)
Pages:

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Handle: RePEc:ags:joaaec:120452

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Web page: http://www.saea.org/jaae/jaae.htm
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Related research

Keywords: Bt; censoring; corn; farm level impacts; genetically modified crops; pesticide use; technology adoption; International Development; Production Economics; Q12; Q16;

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References

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  1. Vassilis A. Hajivassiliou & Axel Borsch-Supan, 1990. "Smooth Unbiased Multivariate Probability Simulators for Maximum Likelihood Estimation of Limited Dependent Variable Models," Cowles Foundation Discussion Papers 960, Cowles Foundation for Research in Economics, Yale University.
  2. Matin Qaim & Alain de Janvry, 2003. "Genetically Modified Crops, Corporate Pricing Strategies, and Farmers' Adoption: The Case of Bt Cotton in Argentina," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 85(4), pages 814-828.
  3. J. Scott Shonkwiler & Steven T. Yen, 1999. "Two-Step Estimation of a Censored System of Equations," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 81(4), pages 972-982.
  4. Heather Klemick & Erik Lichtenberg, 2008. "Pesticide Use and Fish Harvests in Vietnamese Rice Agroecosystems," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 90(1), pages 1-14.
  5. Jean-Paul Chavas & Kwansoo Kim, 2004. "A Heteroskedastic Multivariate Tobit Analysis of Price Dynamics in the Presence of Price Floors," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 86(3), pages 576-593.
  6. Harald Tauchmann, 2005. "Efficiency of two-step estimators for censored systems of equations: Shonkwiler and Yen reconsidered," Applied Economics, Taylor & Francis Journals, vol. 37(4), pages 367-374.
  7. Jean-Thomas Bernard & Luc Bouthillier & Jér�me Catimel & Nancy Gélinas, 1997. "An Integrated Model of Québec-Ontario-U.S. Northeast Softwood Lumber Markets," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 79(3), pages 987-1000.
  8. Qaim, Matin & De Janvry, Alain, 2005. "Bt cotton and pesticide use in Argentina: economic and environmental effects," Environment and Development Economics, Cambridge University Press, vol. 10(02), pages 179-200, May.
  9. Mendoza, Meyra Sebello & Rosegrant, Mark W., 1995. "Pricing behavior in Philippine corn markets: implications for market efficiency," Research reports 101, International Food Policy Research Institute (IFPRI).
  10. Feder, Gershon & Just, Richard E & Zilberman, David, 1985. "Adoption of Agricultural Innovations in Developing Countries: A Survey," Economic Development and Cultural Change, University of Chicago Press, vol. 33(2), pages 255-98, January.
  11. Huang, Jikun & Hu, Ruifa & Rozelle, Scott & Qiao, Fangbin & Pray, Carl E., 2002. "Transgenic varieties and productivity of smallholder cotton farmers in China," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 46(3), September.
  12. Bhavani Shankar & Colin Thirtle, 2005. "Pesticide Productivity and Transgenic Cotton Technology: The South African Smallholder Case," Journal of Agricultural Economics, Wiley Blackwell, vol. 56(1), pages 97-116.
  13. Steven T. Yen & Biing-Hwan Lin & David M. Smallwood, 2003. "Quasi- and Simulated-Likelihood Approaches to Censored Demand Systems: Food Consumption by Food Stamp Recipients in the United States," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 85(2), pages 458-478.
  14. Federico Perali & Jean-Paul Chavas, 2000. "Estimation of Censored Demand Equations from Large Cross-Section Data," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 82(4), pages 1022-1037.
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