The influence of soil decompaction on soil ENR (estimated nitrogen release)(g/m2) over a 3-year period. VM (vertical mulching); WCM (wood chip mulching); WC (white clover).
| Treatment | Month 4 | Month 16 | Month 28 | Month 16 | Month 28 |
|---|---|---|---|---|---|
| Inside canopy | Outside canopy | ||||
| Control | 15.0a | 15.3a | 14.6a | 15.4a | 14.9a |
| VM | 16.0ab | 16.6ab | 17.4b | 15.9ab | 16.0ab |
| WCM | 18.3c | 19.5cd | 19.8c | 16.7b | 17.6cd |
| VM + WCM | 16.6b | 20.3d | 20.5c | 17.0b | 18.3d |
| VM + WCM + worms | 16.2ab | 16.8ab | 17.6b | 16.4ab | 16.9bc |
| VM + WC | 17.1bc | 19.4cd | 19.1c | 16.7b | 17.7cd |
| VM + WC + worms | 16.9bc | 18.0bc | 17.3b | 16.0ab | 16.7bc |
| Significance over time | |||||
| Month (time) | 0.420 | 0.390 | |||
| Treatment | < 0.001 | 0.001 | |||
| Month (time) × treatment | < 0.001 | 0.050 | |||
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 description, see Materials and Methods.