Plan ahead to avoid ear mold development next season. Rotating crops and planting a hybrid with ear rot resistance can lessen the chance of developing ear molds. Hybrids with in-plant insect protection can reduce insect damage to help prevent diseases from entering the ear.
Tar spot is caused by a fungus called Phyllachora maydis that can spread throughout corn fields in the Midwest. This disease was first found in 2015, but has quickly spread throughout Iowa, Illinois, Indiana, Minnesota, Wisconsin, Ohio, Michigan, and Missouri.