Corn Numbering System & Descriptions

Maturity: Maturity expressed in range of days

Growing degree days (G.D.D.): Growing degree days expressed as a value

Minnesota Maturity (MN Maturity): Maturity expressed as a specific value

Planting Population: Medium-High, High, Very High

Height: Short, Medium, Tall

Ear Placement: Medium, Tall

Ear Flex: Length, Girth

Cob Color: Red, Pink, White

Corn-on-Corn: Yes, No, Acceptable with Fungicide Application

Fertility Needs: Moderate, High

The following are rated from Excellent to Not Recommended based on the scale below:

• Dry Down
• Stalk
• Cold Emergence
• Gray Leaf Spot
• NC Leaf Blight
• SC Leaf Blight
• Anthracnose
• Common Rust
• Root
• Stress
• Test Weight
• Eye Spot
• SC Leaf Blight
• Goss’ Wilt

E Excellent
VG Very Good
G Good
AV Average
NR Not Recommended