Aspergillus Ear Rot

Aspergillus flavus

Ear of corn infected with Aspergillus ear rot
Ear of corn infected with Aspergillus ear rot. Photo courtesy of The Daily Climate. Licensed under CC BY 3.0.
Aspergillus ear rot is caused by a fungus. Besides directly reducing yield through damaged kernels, it can produce mycotoxins which are dangerous for humans and livestock. It is favored by wet conditions at or shortly after silking and also by insect damage.
Aspergillus ear rot produces dust-like olive green spores.