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AgriMet Crop Coefficients: Spring Grain


Growth
Stage (%)
Crop
Coefficient
Growth Stage Indicators
0 0.20 Emergence
10 0.20  
20 0.30  
30 0.60  
40 0.83  
50 0.94  
60 0.98  
70 1.00 Full Canopy
80 1.00  
90 1.00  
100 1.00 Heading
110 1.00  
120 1.00  
130 1.00  
140 1.00  
150 1.00  
160 0.96  
170 0.76  
180 0.60  
190 0.43  
200 0.28 Leaves and Stem Dead

Curve developed by ARS, Kimberly, Idaho, Lysimeter plots 1977-79.

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