Treatment designations, descriptions, estimated root loss, and total diameter increase over 6 years. There was no significant difference in diameter increase between pruned and unpruned treatments with the same number of trenches.
| Treatment | Sides trenched | Crown reduction | Dbh increase (cm) |
|---|---|---|---|
| 1T | 1 | No | 4.6 |
| 1TP | 1 | Yes | 4.2 |
| 2T | 2 | No | 3.0 |
| 2TP | 2 | Yes | 2.8 |
| 3T | 3 | No | 2.0* |
| 3TP | 3 | Yes | 2.0* |
| C | 0 | No | 3.9 |
↵* denotes significant difference from control at P ≤ 0.05.