Fusarium ear rot is the most common fungal disease on corn ears. It is caused by several species of Fusarium . Symptoms of Fusarium ear rots are a white to pink or salmon-colored mold, beginning anywhere on the ear or scattered throughout. Often the decay begins with insect-damaged kernels. Usually, it does not involve the whole ear.
Infected kernels are often tan or brown, or have white streaks.
These fungi can produce mycotoxins known as fumonisins. Gibberella Giberrela ear rot. The fungus Gibberella zeae , also known as Fusarium graminearum , cause this ear rot. It can be identified most readily by the red or pink color of the mold. In some cases, the color appears white.