A Meta Analysis on Farm-Level Costs and Benefits of GM Crops
This paper reviews the evidence on the socio-economic impacts of GM crops and analyzes whether there are patterns across space and time. To this end, we investigate the effect of GM crops on farm-level costs and benefits using global data from more than one decade of field trials and surveys. More specifically, we analyze the effects of GM-crops on crop yields, seed costs, pesticide costs, and management and labor costs and finally gross margins. Based on collected data from studies on Bt cotton and Bt maize, statistical analyses are conducted to estimate the effect of GM crop adoption on these parameters. Our results show that, compared to conventional crops, GM crops can lead to yield increases and can lead to reductions in the costs of pesticide application, whereas seed costs are usually substantially higher. Thus, the results presented here do support the contention that the adoption of GM crops leads on average to a higher economic performance, which is also underlined by the high adoption rates for GM crops in a number of countries. However, the kind and magnitude of benefits from GM crops are very heterogeneous between countries and regions, particularly due to differences in pest pressure and pest management practices. Countries with poor pest management practices benefited most from a reduction in yield losses, whereas other countries benefited from cost reductions. However, our study also reveals limitations for meta-analyses on farm-level costs and benefits of GM crops. In particular, published data are skewed towards some countries and the employed individual studies rely on different assumptions, purposes and methodologies (e.g., surveys and field trials). Furthermore, a summary of several (often) short-term individual studies may not necessarily capture long-term effects of GM crop adoption.
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- Jikun Huang & Ruifa Hu & Carl Pray & Fangbin Qiao & Scott Rozelle, 2003.
"Biotechnology as an alternative to chemical pesticides: a case study of Bt cotton in China,"
CEMA Working Papers
509, China Economics and Management Academy, Central University of Finance and Economics.
- Huang, Jikun & Hu, Ruifa & Pray, Carl & Qiao, Fangbin & Rozelle, Scott, 2003. "Biotechnology as an alternative to chemical pesticides: a case study of Bt cotton in China," Agricultural Economics, Blackwell, vol. 29(1), pages 55-67, July.
- Huang, Jikun & Hu, Ruifa & Pray, Carl & Qiao, Fangbin & Rozelle, Scott, 2003. "Biotechnology as an alternative to chemical pesticides: a case study of Bt cotton in China," Agricultural Economics of Agricultural Economists, International Association of Agricultural Economists, vol. 29(1), July.
- Robert Finger, 2010. "Stock price responses on the German suspension of genetically modified maize," Economics Bulletin, AccessEcon, vol. 30(3), pages 2220-2229.
- Matin Qaim & Greg Traxler, 2005. "Roundup Ready soybeans in Argentina: farm level and aggregate welfare effects," Agricultural Economics, International Association of Agricultural Economists, vol. 32(1), pages 73-86, 01.
- Finger, Robert, 2010.
"Evidence of slowing yield growth - The example of Swiss cereal yields,"
Elsevier, vol. 35(2), pages 175-182, April.
- Finger, Robert, 2007. "Evidence of slowing yield growth – the example of Swiss cereal yields," MPRA Paper 9475, University Library of Munich, Germany.
- Bryant, Kelly J. & Reeves, Jeanne M. & Nichols, Robert L. & Greene, Jeremy K. & Tingle, Christopher H. & Studebaker, Glenn E. & Bourland, Fred M. & Capps, Charles D. & Groves, Frank E., 2008. "Valuing Transgenic Cotton Technologies Using a Risk/Return Framework," Journal of Agricultural and Applied Economics, Southern Agricultural Economics Association, vol. 40(03), December.
- Richard Bennett & Uma Kambhampati & Stephen Morse & Yousouf Ismael, 2006. "Farm-Level Economic Performance of Genetically Modified Cotton in Maharashtra, India," Review of Agricultural Economics, Agricultural and Applied Economics Association, vol. 28(1), pages 59-71.
- Huang, Jikun & Hu, Ruifa & van Meijl, Hans & van Tongeren, Frank, 2004. "Biotechnology boosts to crop productivity in China: trade and welfare implications," Journal of Development Economics, Elsevier, vol. 75(1), pages 27-54, October.
- Price, Gregory K. & Lin, William W. & Falck-Zepeda & Fernandez-Cornejo, Jorge, 2003.
"Size and Distribution of Market Benefits from Adopting Biotech Crops,"
184320, United States Department of Agriculture, Economic Research Service.
- Price, Gregory K. & Lin, William W. & Falck-Zepeda, Jose Benjamin & Fernandez-Cornejo, Jorge, 2003. "Size And Distribution Of Market Benefits From Adopting Biotech Crops," Technical Bulletins 33562, United States Department of Agriculture, Economic Research Service.
- 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.
- Demont, Matty & Daems, Wim & Dillen, Koen & Mathijs, Erik & Sausse, Christophe & Tollens, Eric, 2008. "Regulating coexistence in Europe: Beware of the domino-effect!," Ecological Economics, Elsevier, vol. 64(4), pages 683-689, February.
- Richard Bennett & Stephen Morse & Yousouf Ismael, 2006. "The economic impact of genetically modified cotton on South African smallholders: Yield, profit and health effects," Journal of Development Studies, Taylor & Francis Journals, vol. 42(4), pages 662-677.
- 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.
- Pray, Carl & Ma, Danmeng & Huang, Jikun & Qiao, Fangbin, 2001.
"Impact of Bt Cotton in China,"
Elsevier, vol. 29(5), pages 813-825, May.
- Volker Beckmann & Claudio Soregaroli & Justus Wesseler, 2006. "Coexistence Rules and Regulations in the European Union," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 88(5), pages 1193-1199.
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