Cercospora leaf spot
scouted Sept. 4, 2026
- Scientific Name
- Cercospora kikuchii
- Background
- A soybean field in Beaufort County was being scouted, and it was observed that 10% of the field was affected by yellowing between the veins. Domark was applied 21-28 days ago. 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 significant yield losses in North Carolina. Chemical management and cultural practices are both options to control Cercospora leaf blight.
- Resources