Soybean varieties susceptible (left) and resistant (right) to powdery mildew

Powdery mildew is an occasional leaf disease of soybean and many other crops.  Epidemics are not common, but can occur in Wisconsin when weather conditions are especially favorable. Soybean varieties differ considerably in their susceptibility to powdery mildew.

View a printable fact sheet about powdery mildew (pdf)>>