SorghumModerate field risk

Sorghum anthracnose

Colletotrichum sublineola

A fungal disease that affects leaves and, in severe cases, stalks and panicles in warm, humid conditions.

Illustration of a sorghum leaf with tan lesions, purple margins and small black centres — Pictorial field guide
Illustrative symptom pattern for physical comparison. Lighting, crop stage and cultivar can change appearance; never diagnose or treat from this picture alone.

Compare several physical signs

Use the diagram to orient a field inspection, then look across multiple plants and both sides of affected leaves before contacting an extension officer.

Small circular or elliptical lesions
Tan centres with reddish or purple margins
Black fruiting bodies visible within lesions

Field checks before treatment

1Compare several plants before deciding
2Ask a qualified extension officer whether affected residue should be removed
3Seek local advice before chemical control

Reduce future risk

Use resistant seed
Rotate crops
Manage residue and field sanitation

Irrigation note

Use root-zone irrigation where possible and avoid long periods of overnight leaf wetness.

Open irrigation guide

Automated decision support only. Confirm crop treatments with a qualified extension officer before applying a pesticide, fungicide, removing plants, or changing field treatment. Always follow the product label and local registration rules.