The most common diseases of field corn in New York include: 
- Anthracnose Leaf Blight
- Anthracnose Stalk Rot
- Common Rust
- Common Smut
- Eyespot
- Gray Leaf Spot
- Northern Corn Leaf Blight
- Northern Corn Leaf Spot
- Stewart's Bacterial Leaf Blight
Recommendations for management of these diseases in New York through foliar fungicides is available.