Soybean frogeye leaf spot
scouted Aug. 16, 2022
- Scientific Name
- Cercospora sojina
- Background
- Soybeans in Pasquotank county, variety AgVenture 46V6X, were scouted and observed 2% of the field was affected by reddening and yellowing, and stunting. The site is localized and dry. Areas of disease start at the edges of the field and in some cases go out into the field. Plants are stunted and light green and in some cases reddish yellow in color. Affected leaves have dark veins. Also, some black lesions on stems like might be seen with kudzu bug feeding.
- 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.
