Southeast Research and Demonstration Farm
Farmers are continually searching for a third crop to complement the corn-soybean rotation. Field peas can be substituted for most of the soybean meal in swine rations and is more economical than soybean meal, so there is a large potential market for field peas in Iowa. Field peas are a short-season crop, which makes double cropping a potential possibility.
Iowa State University
Fawcett, James A.; Miller, Tom; and Van Dee, Kevin, "Double-Cropped Field Pea Crop Rotation Study" (2009). Iowa State Research Farm Progress Reports. 608.