Soybean frogeye leaf spot
scouted Aug. 25, 2021
- Scientific Name
- Cercospora sojina
- Background
- Soybeans in Union county, variety P55A49, were scouted and observed with 5% of the field being affected by defoliation, leaf spot, as well as browning and yellowing between the veins.
- Conclusion
- The issue was identified as Frogeye leaf spot which is a common foliar disease in North Carolina. The causal agent is Cercospora sojina. Early symptoms are small, dark, water-soaked circular to angular lesions, which expand as the disease progresses and become brown to grayish with a brown-reddish border. Lesions can also occur on the stems and the pods. Management practices include crop rotation with non-host crops like corn or wheat, host resistance, and fungicide use may be beneficial when susceptible hosts are planted and there’s disease pressure
- Resources
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- No resources have been added.