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.

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 ...

SIOUX FALLS, S.D. (AP) -- A late-summer string of hot, humid weather has brought an unwelcome visitor to South Dakota's corn crop. Southern rust, a leaf disease caused by spores blowing in from ...

Southern corn rust, caused by the obligate biotrophic fungus Puccinia polysora, poses a serious threat to maize (Zea mays) production worldwide. Genetic resistance offers a sustainable means of ...

Southern Corn Rust has now been confirmed in more than a dozen Nebraska counties in Eastern and South Central Nebraska. It’s a fungal disease that can cause significant yield loss if it becomes severe ...

Both tar spot and southern corn rust continue to be documented across Indiana (Figures 1 and 2). I suggest if you have not gotten out and looked for these diseases now is the time. Even if your corn ...

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 ...

Learn about the risks surrounding a southern rust infection in corn and what actions farmers should take if they identify it ...

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 ...

A “wait-and-see” strategy will work for a lot of pests and diseases, but southern rust isn’t one of them. After widespread pressure across the Midwest in 2025, this disease is no longer just a ...

With the warm and wet conditions this season, southern rust is on the rise in Midwest corn crops. It may be time to start considering the impact that could have on corn silage and preparing to adjust ...

Agriculture experts recommend farmers take action now on one particularly bad problem. Afternoons heat indeces over 110 can really take a toll on crops, but it's perfect for allowing diseases to breed ...