Cercospora leaf blight
scouted Nov. 3, 2021
- Scientific Name
- Cercospora kikuchii
- Background
- Soybeans in Alamance county, variety 59E01(Don Mario), were scouted and observed 95% of the field was affected by widespread leaf spots, brown/tan/black/purple leaves and stems. First notices some leaf curl after roundup application and has gotten worse as the season continued. The soil is red clay and has received little rainfall. Enlist and Roundup are the only chemicals used.
- 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
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- No resources have been added.
