Reports by Douglas Karlen
Agriculture in the U.S. Corn Belt: Past, Present, and Future.
Cover Crop and Manure Effects on Soil Properties in a Corn Silage System.
Evaluation of Organic Pest Management Treatments for Bean Leaf Beetle in Soybean in Iowa.
Soil Carbon Needs Limit Biomass Ethanol Feedstock Supply.
Will Sulfur Limit Bio-fuel Corn Production?.