Soybean frogeye leaf spot

scouted Oct. 10, 2023

Scientific Name
Cercospora sojina
Background
Soybeans in Currituck County were scouted, and 100% of the field was observed to be affected by browning and loss of leaves.
Conclusion
The issue was identified as Frogeye leaf spot of soybean .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.
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