Prompt detection of Anthracnose stalk rot is key to deploying effective management strategies. The disease usually presents as small, water-soaked lesions on the lower internodes of the stalk. These lesions eventually grow and merge, forming elongated, darkened areas often blanketed with a black, powdery fungal growth.

Internally, the disease induces a discoloration of the stalk pith, changing it from a healthy white to a dark brown or black, often most visible at the nodes. In severe instances, the pith may entirely rot, leaving only the outer rind intact.

Geographically, Anthracnose stalk rot is most prevalent in warm, humid regions. In the United States it is particularly widespread in the Corn Belt, but it can manifest anywhere corn is grown.

The disease can strike at any growth stage of corn, but it inflicts the most harm during the mid to late growing season.

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