Corn Disease Identification Guide
This Corn Disease Identification Guide helps growers compare symptoms seen in the field with common corn diseases. Fill it in by hand and keep it with your farm records for later seasons.
Download free PDF1 page, US Letter, prints clean in black and white
GuideCrops & AgronomyFree PDF
The steps on this page
- Describe leaf lesion shape and color
- Note where on the plant symptoms begin
- Check stalk firmness and lower stalk rot signs
- Look at ears for mold or kernel discoloration
- Record field pattern: patches, edges or uniform
- Note recent weather and residue conditions
- Take photos and collect sample leaves
- Send samples to a diagnostic lab if unsure
How to use this guide
Read the steps once through before you start, then keep the page nearby while you work. Use the notes lines to add what your own setup needs.
Where to check the details
This sheet is a general template, so confirm specifics with your own manuals, labels and local rules. For current official guidance, start with eXtension and USDA.
For more in this area, see the crop planting calendar. Between chores, farm.FM has farm humor, including Corn Farmers Asked to Apologize for Productivity, and farming farm stories.