Cercospora leaf spot

scouted Aug. 14, 2023

Scientific Name
Cercospora kikuchii
Background
Soybeans in Craven county were scouted and observed 15% of the field was affected by canker, dieback, browning and leaf spots in patches. The site is high, dry and sunny.
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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