Anthracnose
scouted Sept. 15, 2025
- Scientific Name
- Colletotrichum destructivum
- Background
- Double-cropped soybeans in Hyde County were being scouted, and it was observed that the field was affected by black spots on pods and stems. It was also observed that there were some signs of Diaporthe/Phomopsis. A sample was submitted to the PDIC for diagnosis. This particular site received heavy rain around Aug 11-15, and the ground remained saturated for two weeks.
- Conclusion
- The issue was identified as anthracnose, caused by Colletotrichum. While usually a disease that shows in the stems and the petioles, it can also cause leaf curling and reddening of the veins. Warm, wet weather favors infection and disease development. Crop rotation and tillage can reduce inoculum, while foliar fungicides will reduce disease, but it's usually not profitable.
- Resources
