Anthracnose
scouted Aug. 27, 2025
- Scientific Name
- Colletotrichum destructivum
- Background
- Soybeans in Randolph County were being scouted at the R5 growth stage, and it was observed that 5% of the field was affected by mottled yellowing in patches. A sample was submitted to the PDIC for diagnosis.
- Conclusion
- The issue 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
