Red crown rot of soybean, caused by Calonectria Ilicicola, continues to be a concern in Indiana. We have identified our first symptoms in 2026 in a field that has had a previous history with soybeans at beginning pod (R3) growth stage. There weren’t any foliar symptoms, but when we pulled back the canopy we could see the red discoloration at the crown/soil line (Figure 1 B). Figure 2 show the map of Indiana counties where red crown rot has been confirmed in previous years. As we move through the rest of the growing season, we are actively surveying fields to better understand the distribution and prevalence of red crown rot across Indiana. Grower participation is critical to this effort, and we encourage anyone who suspects red crown rot to report affected fields and submit samples to help document its occurrence. What to look for: Red crown rot often occurs in[Read More…]
