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AgriMet Crop Coefficients: Corn (Sweet and Field)


Growth
Stage (%)
Crop
Coefficient
Growth Stage Indicators
0 0.30 Emergence
10 0.30  
20 0.32  
30 0.35  
40 0.40  
50 0.51  
60 0.60  
70 0.70  
80 0.80  
90 0.90  
100 1.00 Tasseling
110 1.00  
120 1.00  
130 1.00  
140 0.98  
150 0.95  
160 0.92  
170 0.89  
180 0.86  
190 0.83  
200 0.80 Harvest

Curve developed by ARS Research on Lysimeter Plots, Kimberly, Idaho, 1976-77.

See About Crop Coefficients for more information on AgriMet Crop Coefficients.