Table 3.
Mean square values of analysis of variance (ANOVA) to evaluate the effects of treatments and time on the soil pH, exchangeable acidity, exchangeable Al, exchangeable Fe, and exchangeable Ca.
| Source of variations | Degree of freedom | Mean square | ||||
|---|---|---|---|---|---|---|
| pH | Exchangeable acidity | Exchangeable Al | Exchangeable Fe | Exchangeable Ca | ||
| Treatments | 4 | 3.71∗ | 0.23∗ | 0.08∗ | 9.03∗ | 70.70∗ |
| Time | 2 | 0.65∗ | 0.15∗ | 0.01∗ | 0.37∗ | 0.52∗ |
| Treatments ∗ time | 8 | 0.76∗ | 0.34∗ | 0.01∗ | 0.14∗ | 0.24∗ |
| Error | 30 | |||||
Note: *indicates significant at P ≤ 0.05.