Anthracnose

Anthracnose is caused by the fungus Colletotrichum truncatum. While anthracnose can develop early in the growing season after long periods of humid, wet weather, it usually appears during reproductive growth stages on stems, pods, and petioles as irregularly shaped, brown-black areas. Within the discolored area small, black acervuli develop that have minute black spines (setae). The acervuli may resemble pod and stem blight, however they are randomly scattered and not arranged in rows.

  • Timely fungicide application when warranted can reduce disease and protect yield. Fungicide Efficacy Table – mobile version or pdf
  • Cultural practices – rotating to non-host crop and burying crop residue can reduce pathogen population

Anthracnose

Anthracnose2

Photos by Melvin Newman