High Plains Crop Coefficients for Corn

Growth Stage

Crop Coefficient

Seed

0.25

Emergence

0.35

4-leaf

0.45

4-leaf

0.70

6-leaf

0.85

8-leaf

1.00

10-leaf

1.15

12-leaf

1.20

14-leaf

1.25

Tassel

1.25

Silk

1.30

Blister

1.30

Milk

1.30

Dough

1.20

Dent

1.00

1/2 Maturity

0.90

Black layer

0.70

Harvest

0.00