Corn Ear Rots
Gail Ruhl, Sr. Plant Disease Diagnostician, Plant & Pest Diagnostic Lab
Over the past several weeks the PPDL has identified a number of different fungi associated with corn ear rots, including ears exhibiting Aspergillus flavus and Penicillium spp (Fig 1) Aspergillus niger and Penicillium spp (Fig 2), Nigrospora, Cladosporium and Trichoderma. Follow these links for information on Aspergillus ear rot (pdf file) and potential presence of mycotoxins visit.
Aflatoxin Detected in Fields in Central and Southern Iowa - Iowa State University
Managing Moldy Corn - Purdue Extension
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Figure 1. Aspergillus flavus (L) and Penicillium spp. (R)
Figure 2. Aspergillus niger (black) and Penicillium spp. (bluish-gray)