Agronomist Ryan Gentle shares scouting tips and spray timing strategies to control tar spot, southern rust and other corn ...

BROOKINGS, S.D. - Southern rust was found in Union, Clay and Minnehaha Counties at low incidence and severity, says Emmanuel Byamukama, South Dakota State University Extension plant pathologist.

In the transition period between harvest and planting, farmers focus on combing through their data and preparing for another season.

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 ...

Corn is susceptible to a variety of fungal diseases that affect the leaves during the growing season. Sometimes the fungal spores have a party and the corn may be affected by more than one disease.

Both southern and common rust have been confirmed in multiple corn fields across the state, but as is usually the case in Ohio, the latter is much more wide-spread than the former, and most of the ...

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 ...

Tar spot has a strong foothold in some cornfields across parts of central Illinois, according to Ken Ferrie, Farm Journal Field Agronomist. Until this past week, he had difficulty determining whether ...

There are several leaf diseases that can infect corn in Kansas in any given year. They can all be controlled with some combination of hybrid selection, tillage management, crop rotation, planting ...

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.

Corn production is a marathon every season, and even though the 2021 crop in Illinois is only 30 days away from reaching the finish line it still needs to be monitored for insects and disease. “We’re ...