July 6, 2020 | By Rupp Seeds
Gray leaf spot (GLS) is caused by the fungus Cercospora zeae-maydis. It occurs almost every growing season and is considered to be the most serious disease of corn in the Corn Belt, year in and year out.
Gray leaf spot overwinters in and on corn debris left above and on the soil surface. As temperatures warm and humidity increases, spores are produced on the residue.
Read more about the disease cycle and its impact and management tactics in this issue of SeedScoopGray Leaf Spot In Corn