Integrated Crop Management is published by the Department of Entomology , Iowa State University , Ames, Iowa. Rotation is one of the major ways to manage disease.
Rotation breaks the disease cycle and lowers the amount of pathogen in a field.
However, we have found fields where stand reductions occur during both corn and soybean rotations. Our studies show that some soilborne fungi can attack both corn and soybeans in rotation fields. Corn seedling infected by Rhizoctonia . In the last three years, Pythium and Rhizoctonia were collected from diseased soybean plants in numerous Iowa soybean fields. The isolates were tested by inoculating them to corn and soybean separately.