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Science 7 February 2003:
Vol. 299. no. 5608, pp. 900 - 902
DOI: 10.1126/science.1080609
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Reports
Yield Effects of Genetically Modified Crops in Developing Countries
Matin Qaim,12*
David Zilberman2
Onfarm field trials carried out with Bacillus
thuringiensis (Bt) cotton in different states of India show that
the technology substantially reduces pest damage and increases yields.
The yield gains are much higher than what has been reported for other
countries where genetically modified crops were used mostly to replace
and enhance chemical pest control. In many developing countries,
small-scale farmers especially suffer big pest-related yield losses
because of technical and economic constraints. Pest-resistant
genetically modified crops can contribute to increased yields and
agricultural growth in those situations, as the case of Bt cotton in
India demonstrates.
1 Center for Development Research, University
of Bonn, Walter-Flex-Strasse 3, 53113 Bonn, Germany.
2 Department of Agricultural and Resource Economics,
University of California, Berkeley, CA 94720, USA.
*
To whom correspondence should be addressed. E-mail:
mqaim{at}uni-bonn.de
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