McNay Research and Demonstration Farm
Drought often results in greater agricultural damage in southern, western, and northeastern Iowa than in the rest of the state. Slight to severe slopes are prone to erosion, and soils high in clay content are slow to drain excess moisture during wet periods and have low amounts of available moisture during periods of drought. The land is predominantly used for livestock production because of factors that limit level of productivity in row-crop production.
Iowa State University
Wiedenhoeft, M. H.; Hintz, R. L.; and Patrick, P., "Forage Crop Research: Evaluating Forage Species in Iowa for Productivity during Drought Conditions" (2002). Iowa State Research Farm Progress Reports. 1592.