Characteristics | Variation source | Harvests | Coefficient of variation (%) | ||
Forage grass | Wood ash | Interaction | |||
Plant height (cm) | 0.8732ns | 0.0000*** | 0.0212* | 1st | 7.90 |
| 0.0000*** | 0.0000*** | 0.4564ns | 2nd | 10.75 |
| 0.0001** | 0.0000*** | 0.0000*** | 3rd | 9.49 |
Leaves (number∙pot−1) | 0.0000*** | 0.0000*** | 0.0000*** | 1st | 11.39 |
| 0.0000*** | 0.0000*** | 0.0000*** | 2nd | 13.62 |
| 0.0000*** | 0.0000*** | 0.0003** | 3rd | 15.33 |
Tillers (number∙pot−1) | 0.0008** | 0.0000*** | 0.0157* | 1st | 12.01 |
| 0.0651ns | 0.0000*** | 0.2518ns | 2nd | 15.85 |
| 0.0000*** | 0.0000*** | 0.0000*** | 3rd | 11.51 |
Chlorophyll index | 0.7446ns | 0.0000*** | 0.0007** | 1st | 6.73 |
(SPAD) | 0.3686ns | 0.0000*** | 0.0848ns | 2nd | 7.12 |
| 0.0001** | 0.0000*** | 0.0000*** | 3rd | 9.49 |