Anthracnose
scouted Nov. 13, 2024
- Scientific Name
- Colletotrichum destructivum
- Background
- Soybeans in Tyrell County were being scouted and it was observed that 85% of a field was affected by green stems, which was widespread, and the site is in a low area. Green stems spread across almost the entire field. A field of the same variety, treated the same way, not even a 1/4 mile down the road was healthy and able to be harvested.
- 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
