Cercospora leaf spot
scouted Aug. 10, 2026
- Scientific Name
- Cercospora kikuchii
- Background
- A soybean field, variety NK 39M8XF, in Rockingham County was being scouted, and it was observed that 80% of the field was affected by dieback, browning, and leaf spot. Found widespread. The site is dry. 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