Fusarium Ear Rot Fusarium ear rot Fusarium ear rot is the most common fungal disease on corn ears. It is caused by several species of Fusarium. 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. This is a copyrighted image. All rights reserved. Please see our usage policy page for usage information. Iowa State University Entomology Department .