Brown stem rot and SDS in soybean
Management of Brown Stem Rot and Sudden Death Syndrome
The number one management tool for both of these diseases is variety selection so it’s important to keep records of affected fields and select the variety accordingly. Other management options vary with the disease. Fields with high levels of SDS should not be planted early in future years and should be managed to reduce any compactions issues. Fields with brown stem rot will benefit from longer rotations, but sudden death syndrome is not affected by rotation. Foliar fungicides are not recommended for managing either of these diseases.
As with any disease, correct diagnosis is critical to management. If you are uncertain of what’s causing the damage in your field, I encourage you to submit a sample to the Plant and Pest Diagnostic Clinic for identification. Foliar symptoms alone cannot be used to confirm any of the diseases discussed in this article as they can all look the same.