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Comparison of Corn and Soybean Yields in the United States: Historical Trends and Future Prospects

Dep. of Plant and Soil Sciences, Univ. of Kentucky, 427 Plant Science Building, 1405 Veterans Dr., Lexington, KY 40546-0312. Published with the approval of the Kentucky Agric. Exp. Stn. as Paper 06-06-133

View larger version (22K): [in this window] [in a new window]   Fig. 1. Average state corn and soybean yields from 1866 to 2005 for states with relatively high-yield potential.

View larger version (21K): [in this window] [in a new window]   Fig. 2. Average state corn and soybean yields from 1866 to 2005 for states with relatively low-yield potential.

View larger version (27K): [in this window] [in a new window]   Fig. 3. The ratio of corn and soybean yield for three states with high- (Indiana, Illinois, Iowa) and three with low- (Kentucky, Missouri, Tennessee) yield potential.