Rotation is an effective way to manage many soybean diseases because it breaks the disease cycle and lowers the amount of pathogen in a field. In the 2000 growing season in Iowa, several diseases occurred in soybean fields and some were prevalent. Many growers rotated these fields with corn in the 2001 growing season to reduce disease risk. Some growers may have continued planting soybean despite of the occurrence of diseases. These fields would return to soybean in the 2002 growing season.
Iowa State University
Yang, X. B., "Effects of rotation on soybean disease risk" (2002). Integrated Crop Management News. 1753.
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