Southeast Research and Demonstration Farm
Manure can be a valuable resource if applied properly to utilize its nutrient content. To better define the value of manure, a multiyear research project was begun in 1998 at the Southeast Research Farm to study the fertilizer rate of effect and the best method of manure application in corn–soybean rotation. In 1997, the land where this trial is being conducted was in winter wheat. In 1998, the corn–soybean rotation was being established. And 1999 was the first year that the full rotation and manure treatments were in place.
Iowa State University
Brenneman, Greg; Jensen, James; and Van Dee, Kevin, "Swine Manure Management Study" (2002). Iowa State Research Farm Progress Reports. 1682.