Cercospora leaf blight
scouted Aug. 27, 2025
- Scientific Name
- Cercospora kikuchii
- Background
- Soybeans in Randolph County were being scouted at the R5 growth stage, and it was observed that 5% of the field was affected by mottled yellowing in patches. 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
