Anthracnose
scouted Nov. 3, 2021
- Scientific Name
- Colletotrichum destructivum
- Background
- Soybeans in Alamance county, variety 59E01(Don Mario), were scouted and observed 95% of the field was affected by widespread leaf spots, brown/tan/black/purple leaves and stems. First notices some leaf curl after roundup application and has gotten worse as the season continued. The soil is red clay and has received little rainfall. Enlist and Roundup are the only chemicals used.
- Conclusion
- The cause of disease 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
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- No resources have been added.
