Due to the tendency of wet, compact soils to favor the disease, tillage can be a very important aspect of SDS prevention. In most cases it breaks up the soil, making drainage more prevalent. Tiling a field in order to further improve drainage can prove to be a helpful prevention strategy. The underlying principle is that a well-drained field will have lower risk of SDS infection. Planting soybeans later in the spring when the soil is warmer will give emerging seedlings a better chance of fending off infection. Be sure to map affected areas on a GPS-enabled device, keeping track of certain problem areas, and plant all non-infected areas before these.
Seed treatment or fungicides applied during planting season will have a limited effect on SDS, while foliar fungicide will have no effect against the fungus. Mechanical and cultural management are much more effective options for prevention and control. Please contact your local plant pathologist to learn what is most effective in your area and how to use it best. Always read and follow all label instructions.
Developing a highly-resistant soybean has proved difficult, but most available varieties have some resistance to SDS. Rotating cover crops and corn has not proved to be an effective strategy in reducing the presence of SDS, even after multiple years without soybeans.