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Bt cotton, damage control and optimal levels of pesticide use in Pakistan

机译:巴基斯坦的转基因棉花,危害控制和最佳农药用量

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摘要

We use farm survey data and a damage control framework to analyze impacts of Bt cotton on yields and pesticide use in Pakistan. We also derive optimal levels of pesticide use with and without Bt, taking into account health and environmental externalities. This has not been done previously in the literature. Conventional cotton growers suffer from significant insect crop damage; they underuse pesticides from a profit-maximizing perspective. Yet, the picture is reversed when externalities are also considered. The social optimum of pesticide use is much lower than the private optimum, and both optima are lower with Bt than without this technology. Bt controls pest damage more effectively. Hence, yields on Bt farms are about 20 per cent higher in spite of lower pesticide use. Large pest damage is a typical phenomenon in developing countries. In such situations, Bt can contribute to productivity growth, while reducing pesticide applications and associated negative externalities.
机译:我们使用农场调查数据和损害控制框架来分析Bt棉花对巴基斯坦产量和农药使用的影响。考虑到健康和环境外部因素,我们还可以得出有无Bt的最佳农药使用水平。以前在文献中没有做到这一点。传统的棉花种植者遭受严重的虫害危害。从利润最大化的角度来看,他们使用农药不足。然而,当考虑到外部性时,情况就相反了。农药使用的社会最优值远低于私人最优值,而使用Bt的两个最优值均低于不使用该技术的最优值。 Bt可以更有效地控制害虫危害。因此,尽管杀虫剂使用量减少,但Bt农场的单产仍提高了约20%。有害生物大面积损害是发展中国家的典型现象。在这种情况下,Bt可以促进生产力的增长,同时减少农药的使用和相关的负面外部影响。

著录项

  • 来源
    《Environment and Development Economics》 |2014年第6期|704-723|共20页
  • 作者

    SHAHZAD KOUSER; MATIN QAIM;

  • 作者单位

    Institute of Agricultural and Resource Economics, Faculty of Social Sciences, University of Agriculture, Faisalabad, Pakistan;

    Department of Agricultural Economics and Rural Development, Georg-August University of Goettingen, Germany;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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