Crop Coeficients for:Sunflower   
   Temperature Limits for Growing Degree Day Est.
       Upper Limit =  99.0 F
       Lower Limit =  50.0 F
   Coeficient and GDD accumulation at the beginning
     of each growth stage for various maturity groups
STAGE         KC  
Early veg.  0.10      0.0     0.0     0.0
Bud format  1.00    680.0   680.0   680.0
Flower ini  1.10    800.0   800.0   800.0
50% Disk F  1.15   1035.7  1100.0  1164.3
Early Seed  1.15   1350.0  1500.0  1650.0
Late Seed   1.15   1664.3  1900.0  2135.7
Mature      0.20   1900.0  2200.0  2500.0