The influence of soil decompaction on diameter at breast height (DBH)(percent increase) over a 3-year period. VM (vertical mulching); WCM (wood chip mulching); WC (white clover).
| Treatment | Month 4 | Month 16 | Month 28 |
|---|---|---|---|
| Control | 0.80a | 0.64a | 0.94a |
| VM | 1.46ab | 2.10b | 2.51b |
| WCM | 1.56b | 2.23b | 2.83bc |
| VM + WCM | 1.71b | 2.61b | 3.28bc |
| VM + WCM + worms | 2.20b | 3.07b | 3.75c |
| VM + WC | 1.70b | 2.25b | 2.76bc |
| VM + WC + worms | 2.29b | 2.12b | 3.19bc |
| Significance over time | |||
| Month (time) | 0.608 | ||
| Treatment | < 0.001 | ||
| Month (time) × treatment | 0.167 | ||
Numbers within a column followed by a common letter are not significantly different according to Tukey’s honestly significance test (P = 0.05). For treatment descriptions, see Materials and Methods.