Table 2. Statistical results of three-way ANOVAs of the biomass data a.
| Abg. biomass | Leaves | Shoots | root:shoot | |||||
|---|---|---|---|---|---|---|---|---|
| Factor | F | p | F | p | F | p | F | p |
| Compost | 839.6 | <0.001 | 438.9 | <0.001 | 811.3 | <0.001 | 22.2 | <0.001 |
| Biochar | 376.2 | <0.001 | 196.2 | <0.001 | 388.4 | <0.001 | 0.079 | |
| N-Fertil. | 895.1 | <0.001 | 437.4 | <0.001 | 889.1 | <0.001 | 0.780 | |
| Comp. x BC | 41.8 | <0.001 | 0.13 | 0.876 | 44.0 | <0.001 | 3.24 | 0.051 |
| Comp. x N | 63.3 | <0.001 | 9.55 | 0.004 | 75.7 | <0.001 | 0.74 | 0.397 |
| BC x N | 62.3 | <0.001 | 1.72 | 0.193 | 64.4 | <0.001 | 0.34 | 0.712 |
| Comp x BC x N | 17.0 | <0.001 | 0.13 | 0.878 | 19.4 | <0.001 | 0.23 | 0.799 |
aAbbreviations: Abg biomass, aboveground (leaf plus shoot) biomass (Fig. 2); root:shoot, root:shoot ratio; Comp., factor ‘compost addition’; Biochar, BC, factor ‘biochar treatment’; N-Fertil., N, factor ‘low/high fertilization’.