Table 4. Results of ANOVA of the Quadratic Model.
| terms | sum of square | df | mean square | F-values | p-values | |
|---|---|---|---|---|---|---|
| model | 87 685.45 | 14 | 6263.25 | 1575.40 | <0.0001 | significant |
| A (pH) | 50 784.00 | 1 | 50 784.00 | 12 773.71 | <0.0001 | |
| B (T) | 3735.01 | 1 | 3735.01 | 939.47 | <0.0001 | |
| C (C0) | 5197.93 | 1 | 5197.93 | 1307.44 | <0.0001 | |
| D (dosage) | 630.38 | 1 | 630.38 | 158.56 | <0.0001 | |
| AB | 2166.90 | 1 | 2166.90 | 545.04 | <0.0001 | |
| AC | 3063.62 | 1 | 3063.62 | 770.59 | <0.0001 | |
| AD | 694.32 | 1 | 694.32 | 174.64 | <0.0001 | |
| BC | 100.00 | 1 | 100.00 | 25.15 | 0.0002 | |
| BD | 1011.24 | 1 | 1011.24 | 254.36 | <0.0001 | |
| CD | 0.2500 | 1 | 0.2500 | 0.0629 | 0.8054 | |
| A2 | 13 162.53 | 1 | 13 162.53 | 3310.77 | <0.0001 | |
| B2 | 2362.74 | 1 | 2362.74 | 594.30 | <0.0001 | |
| C2 | 6605.67 | 1 | 6605.67 | 1661.52 | <0.0001 | |
| D2 | 5380.80 | 1 | 5380.80 | 1353.43 | <0.0001 | |
| residual | 59.63 | 15 | 3.98 | |||
| lack of fit | 52.80 | 10 | 5.28 | 3.86 | 0.0744 | not significant |
| pure error | 6.83 | 5 | 1.37 | |||
| cor total | 87 745.09 | 29 |