Gray leaf spot is a widespread fungal disease in corn, responsible for a 23-million-bushel yield loss in the U.S. in 2024.¹ Controlling gray leaf spot requires more than just deciding if you should ...
Gray leaf spot of corn is caused by the fungus Cercospora zeae-maydis. The fungus is now widespread in Indiana and the Eastern Corn Belt (Midwest). Weather strongly influences development of gray leaf ...