Anthracnose
scouted Sept. 12, 2023
- Scientific Name
- Colletotrichum destructivum
- Background
- Soybeans in Yadkin County, variety AG54XFO were scouted, and approximately 30% of the field was affected by bleaching, browning, and yellowing between and along the leaf veins, as well as leaf spot symptoms. The submitted samples represent untreated strips from a foliar fungicide trial. Treated strips received Miravis Top at the R3 growth stage. In addition, the entire field was treated with herbicide applications of RoundUp and Flexstar.
- 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.
