Table 3. Results of two-way ANOVA testing the effect of the clipping treatment (C) and the harvesting seasons (H) (spring, summer, autumn, spring+1 yr) on total biomass and root/shoot ratio as well as on the percentage of the various tree components.
Significant effects (P<0.05) are given in bold.
| Tree components | Clipping (C) | Harvesting season (H) | C x H | ||||||
|---|---|---|---|---|---|---|---|---|---|
| df | F | P | df | F | P | df | F | P | |
| Total biomass | 1 | 8.31 | 0.006 | 3 | 8.02 | <0.001 | 3 | 1.47 | 0.231 |
| Root/shoot ratio | 1 | 14.57 | <0.001 | 3 | 7.24 | <0.001 | 3 | 2.78 | 0.049 |
| Stem | 1 | 5.34 | 0.024 | 3 | 15.09 | <0.001 | 3 | 0.48 | 0.698 |
| Branches | 1 | 0.75 | 0.391 | 3 | 9.52 | <0.001 | 3 | 1.45 | 0.237 |
| Needles | 1 | 47.35 | <0.001 | 3 | 43.28 | <0.001 | 3 | 4.76 | 0.005 |
| Coarse roots | 1 | 4.40 | 0.040 | 3 | 3.54 | 0.020 | 3 | 1.02 | 0.390 |
| Fine roots | 1 | 5.93 | 0.018 | 3 | 5.24 | 0.003 | 3 | 3.31 | 0.026 |
| Aboveground | 1 | 17.02 | <0.001 | 3 | 8.28 | <0.001 | 3 | 3.15 | 0.031 |
| Belowground | 1 | 17.02 | <0.001 | 3 | 8.28 | <0.001 | 3 | 3.15 | 0.031 |