Control measures include rotation, tillage, and planting resistant hybrids. Stalk rot The most frequently observed corn disease in Pennsylvania, stalk rot usually can be traced to stress occurring at some critical point in the growing season. Moisture stress, stresses from other diseases, and improper fertilization are the most common factors associated with increased levels of stalk rot. Growers should select hybrids that stand well and attempt to minimize as many stresses as possible. The disease is observed throughout the state and probably only rarely causes a significant yield loss.
Resistant hybrids are the best method of control.
Anthracnose also may cause seedling death early in the season. Fall symptoms include leaf lesions that spread from bottom leaves to top leaves.