Cercospora leaf spot
scouted July 16, 2026
- Scientific Name
- Cercospora kikuchii
- Background
- A soybean field in Union County was being scouted, and it was observed that 25 % of the field was affected by yellowing between the veins, in patches across the field. The field is a dry and sunny site. A sample was submitted to the PDIC for diagnosis.
- 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.
- Resources
