Table 1.
Results of the three-way ANOVA testing the differential effects of fallow types (F, three levels; forest fallow, short fallow and cropping conditions), soil origins (S, three levels; Typic Kandiudox, Typic Kandiudult and Rhodic Kandiudult), sampling depths (D, two levels; 0–10 cm and 10–20 cm), and their interactions on the soil chemical properties.
| Fallow types (F) | Soil origins (S) | Sampling depths (D) | F × S | F × D | S × D | F × S × D | |
|---|---|---|---|---|---|---|---|
| Soil-pH | 24.6 (***) | 357.1 (***) | 64.8 (***) | 4.4 (**) | 0.2 (ns) | 7.4 (**) | 3.4 (*) |
| Soil-N content (mg kg−1) | 3.8 (**) | 6.5 (**) | 101.8 (***) | 2.1 (ns) | 3.1 (*) | 1.1 (ns) | 0.6 (ns) |
| Soil-C content (g kg−1) | 5.8 (**) | 7.8 (**) | 94.8 (***) | 1.3 (ns) | 4.6 (*) | 2.7 (ns) | 0.6 (ns) |
| Soil-Mg content [cmol (+) kg−1] | 2.0 (ns) | 4.5 (*) | 44.5 (***) | 1.2 (ns) | 1.3 (ns) | 7.4 (**) | 1.5 (ns) |
| Soil-Al content [cmol (+) kg−1] | 12.9 (***) | 2.1 (ns) | 1.0 (ns) | 1.4 (ns) | 2.5 (ns) | 5.0 (*) | 0.9 (ns) |
| Soil-K content [cmol (+) kg−1] | 5.2 (**) | 7.2 (**) | 3.0 (ns) | 1.8 (ns) | 1.4 (ns) | 6.3 (**) | 4.2 (**) |
| Soil-Ca content [cmol (+) kg−1] | 14.0 (***) | 41.2 (***) | 68 (***) | 6.0 (***) | 2.5 (ns) | 7.0 (**) | 3.8 (**) |
| Soil-Pi content (mg kg−1) | 1.2 (ns) | 6.2 (**) | 35.6 (***) | 8.5 (***) | 5.6 (**) | 25.4 (***) | 3.6 (*) |
f-values (n = 4 replicates) are shown. Levels of statistically significant differences are given by ‘ns’ (not significant, p ≥ 0.05); *p < 0.05; **p < 0.01; ***p < 0.001. N, nitrogen; C, carbon; Mg, magnesium; Al, aluminum; K, potassium; Ca, calcium; Pi, phosphate.