Crop Coefficients for: Potato
Temperature Limits for Growing Degree Day Estimation
Upper Limit = 97.0 F
Lower Limit = 45.0 F

Coefficient and GDD accumulation at the beginning 
of each growth stage for various maturity groups:

STAGE	    	  KC
Emergence	0.12	0.0	0.0	0.0
Early Veg	0.15  228.0   228.0   228.0
Vegetative	0.34  497.0   497.0   497.0
Blossom		0.61  800.0   800.0   800.0
Early Tube	0.87 1090.7  1125.6  1160.5
Tuberizati	1.05 1398.9  1470.8  1542.7
Tuber bulk	0.98 1856.0  1982.8  2109.5
Tuber bulk	0.70 2302.6  2482.9  2663.3
Senescence	0.35 2706.3  2935.1  3163.8
Senescence	0.12 3044.3  3313.6  3582.9
Mature		0.12 3300.0  3600.0  3900.0