Journal of Agricultural and Resource Economics
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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 GM technologies). U.S. corn and soybean yields increased relative to EU yields since the introduction of GM technologies. EU wheat yields (for which GM technologies are not commercially available in either region) continue to increase relative to the United States. Thus, the EU ban on GM technologies has likely increased the difference between corn and soybean yields between the two regions.
A lack of high-quality beef has been cited as one of the primary factors for the 50% decline in beef demand from the mid-1970s to the last 1990s. Cattle producers argue that appropriate price premiums are not sufficient to encourage the production of high-quality cattle. Although some improvement in carcass quality can be made by the cattle feeding and processing sectors, substantial improvements in quality must include genetic progress. A hedonic analysis of four major U.S. beef seedstock producers indicates that bull purchasers place relatively high values on a bull’s ability to produce progeny with improved carcass-quality traits.
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