Anthracnose
scouted Oct. 10, 2025
- Scientific Name
- Colletotrichum destructivum
- Background
- Soybeans in Halifax County were being scouted and it was observed that 50 % of the field were looking off. Plants had enough water during early stages but had to go through drought stress during the reproductive stages. A sample was submitted to the PDIC for diagnosis. The field is usually a dry 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
