Crop Coefficients for: Alfalfa Temperature Limits for Growing Degree Day Estimation Upper Limit = 77.0 F Lower Limit = 40.0 F Coefficient and GDD accumulation at the beginning of each growth stage for various maturity groups: STAGE KC Stage 1 0.10 0.0 0.0 0.0 Stage 2 0.41 100.0 100.0 100.0 Stage 3 0.54 250.0 250.0 250.0 Stage 4 0.66 300.0 300.0 300.0 Maturity 0.85 400.0 400.0 400.0 Full Cov 1.00 700.0 700.0 700.0 Full Cov 1.00 4600.0 4900.0 5200.0