Soybean Diseases
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Best Management Practices for Soybean Production
This is your unbiased, research-based guide to soybean production to help increase yield, reduce input costs and protect your investment.
All Soybean Diseases Content
SDSU Extension programs help producers maintain healthy crops
August 26, 2025
Madalyn Shires puts on a lot of miles in the summer. As an assistant professor and SDSU Extension Plant Pathology Specialist, Shires traverses the state visiting research plots and educating crop producers on that research.
Crops
During the growing season, SDSU Extension provides weekly production recommendations.
Bean Leaf Beetles Showing Up in Soybean
Despite the prediction of low overwintering survival we have observed bean leaf beetles in soybean this week. See our latest observations and management recommendations.
Be Aware of Fungicide Resistance in Field Crops
A few soybean and corn fields have received or will be receiving a fungicide application this season. We recommend scouting fields treated with fungicides to determine if diseases are controlled as expected or if there are signs of reduced sensitivity.
South Dakota Pest Management Guides
The South Dakota Pest Management guides are now available for free. The guides offer recommendations for controlling weeds, insects, and diseases in a variety of South Dakota crops.
SDSU Extension to host disease scouting workshop for corn, soybeans
October 01, 2024
If you have been wondering what you’re seeing in your corn or soybean fields this season, join the SDSU Extension plant pathology team in Volga to see tar spot in the corn field and white mold in the soybean field, or to have your own diseased plant material identified.
Soybean
SDSU Extension is your partner to increase yields and improve efficiency.
Watch Out for Phytophthora Root and Stem Rot in Soybean
Current weather conditions of continuous rainfall are saturating our fields, which is creating a favorable environment for Phytophthora root and stem rot.
Are You at Risk for Sudden Death Syndrome in Soybean?
The present weather conditions of heavy rainfall and cool temperatures provide a favorable environment for sudden death syndrome in soybeans. Learn some expert tips for identifying and managing it this growing season.
Risks of Early Soybean Planting in South Dakota
Early soybean planting offers potential yield benefits, but it also poses some risks. Learn some expert tips and considerations for early soybean planting this growing season.