Cercospora leaf blight
scouted Sept. 23, 2025
- Scientific Name
- Cercospora kikuchii
- Background
- Soybeans in Johnston County were being scouted, and it was observed that 25% of the field was affected in patches by dieback. A sample was sent 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
