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 ...

Responsible for over 64 million bushels of yield loss annually, northern corn leaf blight (NCLB) is the third most destructive disease in corn behind tar spot and southern rust, according to Crop ...

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 ...

URBANA, Ill. - Midwestern corn growers know the symptoms of northern corn leaf blight all too well: greenish-gray lesions on the leaves that can add up to major yield losses if not detected and ...

Gray leaf spot is also active in the lower canopy at multiple sites across the state. The lesions are light tan in color and generally narrow and rectangular, and can be as long as 2 inches. As the ...

Like most plants, corn growth progresses through three main phases: germination, vegetative, and reproductive stages. During germination, seeds break dormancy when soil temperatures exceed 50°F. They ...

Tar spot is caused by the fungal pathogen Phyllachora maydis. Under favorable conditions for disease, yield loss on susceptible hybrids can be severe. Tar spot was first identified in DE at the end of ...