Cercospora leaf blight

scouted Oct. 3, 2022

Scientific Name
Cercospora kikuchii
Background
Soybeans in Wilson county, variety P54A36SX, were scouted and observed 15% of the field was affected by whole leaves browning and some leaf spots. These soybeans were planted on organic land behind wheat.
Conclusion
The issue was identified as Cercospora blight of soybean. This disease is caused by the pathogen Cercospora kikuchii and although it's common in soybeans it rarely causes significant yield losses in North Carolina. Chemical management and cultural practices are both options to control Cercospora leaf blight.
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