Time for concern: All season
Key characteristics: Small spots appear on the leaves. These spots may enlarge and become tan in the center with red, reddish brown, or yellowish orange borders.
- A Checklist of Sweet Corn Diseases and Suggested Control Measures
- University of Delaware - Anthracnose leaf blight and stalk rot of corn
Record the occurrence and severity of anthracnose. No thresholds are available.
|Resistant varieties||Consult your seed company prior to purchase.|
The fungus that causes anthracnose overwinters in corn debris and is most often a problem in fields with poor rotation. Plant only in fields where sweet or field corn has not been grown in the previous year to avoid anthracnose.
|Site selection||Anthracnose is common in fields early in the season where corn debris from the previous year has been left on the soil.|
|Postharvest||Crop debris should be destroyed as soon as possible to remove this source of disease for other plantings and to initiate decomposition.|
|These are not currently viable management options.|
|Pesticides||Cornell Integrated Crop and Pest Management Guidelines for Commercial Vegetable Production|