By Damon Smith, Ph.D.
Department of Plant Pathology
University of Wisconsin-Madison
Watch Presentation (12 min 54 sec)
for PC, Mac, and Mobile Devices | for iPhone
Subscribe to PMN
Note: For the best viewing experience on your PC, please use Google Chrome. For the best iPad viewing experience, you will be prompted to download the free Articulate Mobile Player app.
Eyespot of field corn and sweet corn is caused by the fungus Aureobasidium zeae. Eyespot is problem on corn when temperatures are cool (68-70° F) and there are frequent rains or dew events. Other conditions that favor eyespot include minimal tillage, continuous corn rotation, and susceptible hybrids. Most modern corn hybrids are resistant to eyespot. Therefore, yield loss is very minimal on most hybrids. However, on susceptible hybrids yield loss averages about 9%. This presentation will highlight information about eyespot and how to manage eyespot of field corn and sweet corn.