High Plains Crop Coefficients for Sorghum

Growth Stage

Crop Coefficient

Seed

0.40

Emergence

0.40

3-leaf

0.55

4-leaf

0.60

5-leaf

0.70

Growing Point Differentiation

0.80

Flag Leaf

0.95

Boot

1.10

Heading

1.10

Flower

1.00

Soft Dough

0.95

Hard Dough

0.90

Black Layer

0.85

Harvest

0.00