 Are U.S. Corn and Soybeans Becoming More Drought Tolerant?Tian Yu and Bruce Babcock Staff General Research Papers Archive from Iowa State University, Department of Economics Abstract: The hypothesis that corn and soybeans have become more drought tolerant is tested by regressing county yields on a drought index and time. Results indicate that corn yield losses from drought of a given severity, whether measured in quantity terms or as a percentage of mean yields, have decreased over time. Soybean percentage yield losses have also declined, but absolute losses have remained largely constant. The potential impact of increased drought tolerance on U.S. crop insurance rates is illustrated by comparing Group Risk Plan premium rates assuming time-invariant susceptibility to drought with rates generated from this article’s regression results. Keywords: corn; crop insurance rates; drought tolerance; soybean; yield risk (search for similar items in EconPapers) Published in American Journal of Agricultural Economics 2010, vol. 92, pp. 1310-1323 There are no downloads for this item, see the EconPapers FAQ for hints about obtaining it. Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:isu:genres:32098 Access Statistics for this paper More papers in Staff General Research Papers Archive from Iowa State University, Department of Economics Iowa State University, Dept. of Economics, 260 Heady Hall, Ames, IA 50011-1070. Contact information at EDIRC. |
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