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AgriMet Crop Coefficients: Winter Grain


Growth
Stage (%)
Crop
Coefficient
Growth Stage Indicators
0 0.22 Break Dormancy
10 0.40  
20 0.56  
30 0.70  
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 Medium Dough
160 0.96  
170 0.76  
180 0.60  
190 0.43  
200 0.28 Leaves and Stems Dead

Curve developed by ARS, Kimberly, Idaho, from lysimeter plots 1977-78.

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