Common Rust
A fungal disease of corn caused by Puccinia sorghi.
Affected Plant
Corn (maize)
Severity
Low to Moderate
Symptoms
- Small, circular to elongate cinnamon-brown pustules on both leaf surfaces
- Pustules may darken as the season progresses
Causes
- Windborne fungal spores
- Cool, moist conditions favoring infection
Prevention
- Choose resistant hybrids where available
Management
- Apply fungicide if infection is severe and occurs early in the season
Related Corn (maize) Diseases
Think your plant might have Common Rust?
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Diagnose Your PlantDisclaimer: This is an AI-generated result and not a replacement for expert agronomic or plant-pathology diagnosis. Confidence scores reflect the model's certainty, not biological ground truth. The model was trained and evaluated on leaf photos captured under controlled, lab-like conditions, so accuracy on real-world field photos (cluttered backgrounds, variable lighting, multiple or overlapping leaves) may be lower than the reported evaluation metrics.