Cercospora leaf blight

scouted Sept. 19, 2023

Scientific Name
Cercospora kikuchii
Background
Soybeans in Randolph County were scouted, and 5% of the field was observed to be affected by widespread leaf spots. The site location is sunny and is being used for an OFT trial.
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 significtant yield losses in North Carolina. Chemical management and cultural practices are both options to control Cercospora leaf blight.
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