Table 4. Results of two-way ANOVA testing the effect of the clipping treatment (C) and the various fine-root classes (R; new roots, size classes ≤0.5 mm, >0.5–1.0 mm, >1.0–1.5 mm, and >1.5–2.0 mm) on fine-root biomass at various harvesting seasons.
Significant effects (P<0.05) are given in bold (autumn data were tested with non-parametric tests due to non-normal distribution).
| Harvesting season | Clipping (C) | Fine-root classes (R) | C x R | ||||||
|---|---|---|---|---|---|---|---|---|---|
| df | F | P | df | F | P | df | F | P | |
| Spring | 1 | 1.00 | 0.324 | 4 | 11.41 | <0.001 | 4 | 0.98 | 0.429 |
| Summer | 1 | 0.26 | 0.609 | 4 | 1.90 | 0.1181 | 4 | 2.14 | 0.083 |
| Autumn | 1 | - | 0.007 | 4 | - | <0.001 | - | - | - |
| Spring+1 yr | 1 | 9.77 | 0.003 | 4 | 19.10 | <0.001 | 4 | 0.94 | 0.446 |