期刊名称：Journal of Agricultural and Resource Economics
印刷版ISSN：1068-5502
出版年度：2019
卷号：44
期号：1
页码：16-31
出版社：WAEA
摘要：Over 90% of U.S. corn and soybeans are planted with genetically modified (GM) seed varieties.We use a flexible, nonlinear functional form to investigate yield differences for corn, soybeans,and wheat between the United States and the European Union (which bans the use of GMtechnologies). U.S. corn and soybean yields increased relative to EU yields since the introductionof GM technologies. EU wheat yields (for which GM technologies are not commercially availablein either region) continue to increase relative to the United States. Thus, the EU ban on GMtechnologies has likely increased the difference between corn and soybean yields between the tworegions.
