Leaf diseases may exhibit similar symptoms or have multiple diseases present at once, and laboratory culturing or microscope examination may be required for diagnosis.
- Stewart's Bacterial Wilt
- Goss's Wilt
- Anthracnose Leaf Blight
- Eyespot
- Physoderma Brown Spot and Node Breakage
- Northern Corn Leaf Blight
- Common Rust
- Southern Rust
- Gray Leaf Spot