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 ...

It’s a corn disease issue creeping north and infiltrating fields earlier than it has in the past and one that thrives in high heat and humidity. With increasing reports of southern rust now being ...

You have no doubt witnessed helicopters and/or spraying aircraft in corn crops the past couple weeks. A lot of seed producers are spraying for corn earworm, banks and two-spotted spider mites in corn.

The weather conditions of 2025 were perfect for a southern rust outbreak across the Midwest, resulting in many growers having to make late-season decisions on disease management. Southern rust is a ...

As corn planting looms, the dread of disease pressures may be occupying producers’ thoughts. Some of the pesky problems in these parts are relatively new to the headache list, including Tar Spot, ...

WATERTOWN, S.D. — Across most of South Dakota, corn diseases have been worse than normal this year. Madalyn Shires, assistant professor and SDSU Extension plant pathology specialist, hosted a field ...

Tire tracks run through a field of corn in Iowa. A fungus that attacks corn has spread to over 40 Iowa counties. Southern rust creates reddish-orange patches on the tops of corn leaves. This blocks ...

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 ...

There’s still time to get the plant health™ benefits of Headline® fungicide on corn by preventing the worst diseases. The fact is that even the lowest level of disease drains yield from your fields.

BROOKINGS, S.D. — This year, the soybean and corn crops in eastern South Dakota got an early start with a good spring, said Peter Kovacs, cropping system agronomist at South Dakota State University.