Details:
Soybean Stem Canker was found in R7 (beginning maturity) soybeans. The disease usually occurs in patches across a field and the first symptom is typically dead plants that have dried leaves later in the season.
Conclusion:
The best way to manage stem canker is to plant resistant soybean varieties. Rotating crops and incorporating infested crop residue into the soil will reduce the amount of inoculum available to infect the next soybean crop.
Resources:
Soybean Stem Canker | CPN