Anthracnose
scouted Aug. 22, 2025
- Scientific Name
- Colletotrichum destructivum
- Background
- Soybeans in Pasquotank County, planted on June 9th, were being scouted and it was observed that 15% of the field was affected by general, marginal, and mottled yellowing in random parts of the field. A sample was submitted to the PDIC for diagnosis. The field is a sunny site.
- Conclusion
- The cause of the blight spots on the leaves 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
