Northeast Research and Demonstration Farm
Grain producers in Iowa are interested in the effects of liming rates on crops and soils. It has been well known for many years that rotations including alfalfa must be limed to a pH of 6.9. This experiment was designed to determine the best pH for a corn-soybean rotation in this area and if there are any detrimental effects on crops when soils are underlimed or overlimed.
Iowa State University
Henning, Stanley, "Crop and Soil Responses to Rates of Lime" (2005). Iowa State Research Farm Progress Reports. 1241.