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Iowa State University

Soybean

Agricultural and Resource Economics

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Are U.S. Corn And Soybeans Becoming More Drought Tolerant?, Tian Yu, Bruce A. Babcock Oct 2009

Are U.S. Corn And Soybeans Becoming More Drought Tolerant?, Tian Yu, Bruce A. Babcock

CARD Working Papers

An objective drought index that measures the dry and hot conditions adversely affecting crop yields is used in a regression analysis to test whether corn and soybeans have become more drought tolerant. Results indicate that corn yield losses from a drought of a given severity, whether measured in quantity terms or as a percentage of mean yield, have decreased over time. The null hypothesis that the absolute level of soybean yield losses due to drought has not changed cannot be rejected. But soybean yield losses in percentage terms have decreased over time. Because drought is the primary cause of yield ...


Economic Effects Of Changes In Transportation Rates And Processing Capacity On Soybean Procurement By Iowa Processors, John William Uhrig Jan 1965

Economic Effects Of Changes In Transportation Rates And Processing Capacity On Soybean Procurement By Iowa Processors, John William Uhrig

Retrospective Theses and Dissertations

No abstract provided.


Soybean Supply Functions For United States: A National, Regional And State Analysis, Vadlamudi Yugandhara Rao Jan 1965

Soybean Supply Functions For United States: A National, Regional And State Analysis, Vadlamudi Yugandhara Rao

Retrospective Theses and Dissertations

No abstract provided.