Open Access
Table II
Redwood epicormic sprout data for pruned and unpruned study areas in 2002 and 2006. Several treatments at Fortuna, Carlotta or Mitsui were not measured for epicormic sprouts because of extensive bear damage. Common lower case letters within study sites denote means that were not significantly different. Standard errors (SE) are given in parentheses following means. Samples sizes are number of trees.
| Study area | Treatment | Mean number of | Sample size | Mean number of | Sample size |
|---|---|---|---|---|---|
| prescription* | sprouts per tree 2002 | 2002 | sprouts per tree 2006 | 2006 | |
| 299 Cutoff | Control | 27.0 (11.9)a | 10 | 17.4 (9.8)a | 10 |
| 60% | 28.6 (23.6)a | 9 | 18.0 (12.3)a | 9 | |
| 45% | 73.7 (33.8)ab | 10 | 27.6 (12.0)a | 10 | |
| 5.5 m or 35% | 30.0 (13.5)a | 10 | 11.5 (6.2)a | 9 | |
| 30% | 38.5 (9.0)ab | 10 | 11.0 (3.7)a | 10 | |
| 15% | 154.3 (37.2)b | 17 | 67.3 (20.6)a | 17 | |
| M-line | Control | 6.0 (4.8)a | 10 | 3.6 (2.6)a | 10 |
| 60% | 18.0 (10.2)a | 10 | 3.6 (3.6)a | 10 | |
| 45% | 44.0 (18.5)a | 10 | 16.2 (8.3)a | 10 | |
| 30% | 76.7 (19.2)a | 8 | 13.7 (5.4)a | 7 | |
| 15% | 342.7 (128.4)b | 10 | 169.0 (75.7)b | 10 | |
| Maple | Control | 21.0 (6.8)a | 12 | 6.0 (2.3)a | 12 |
| Creek | 4.9–5.5 m | 38.8 (15.6)a | 11 | 12.3 (5.8)a | 11 |
| Fortuna | Control | 6.0 | 1 | 0 | 1 |
| 3.0–5.5 m, 40% | 4.5 (1.9) | 8 | 7.3 (5.3) | 8 | |
| Carlotta | Control | 34.7 (12.5)ab | 10 | ||
| 2.4 m | |||||
| 3.0–5.5 m, 40% | 24.9 (3.9)a | 10 | 9.4 (3.6)a | 10 | |
| 3.0–5.5 m, 40% | 86.1 (24.6)b | 10 | 21.4 (10.0)a | 7 | |
| M-150 | Control | 2.7 (2.7)a | 9 | 1.5 (1.5)a | 8 |
| Control | 2.4 (1.6)a | 10 | 2.0 (1.3)a | 6 | |
| 2.4 m | 3.8 (2.3)a | 11 | 2.7 (1.2)a | 11 | |
| 3.0–5.5 m, 40% | 74.9 (25.9)b | 10 | 27.1 (20.8)a | 10 | |
| Mitsui | Control | 19.2 (9.2)a | 10 | 11.4 (8.4) | 10 |
| 2.4 m | 3.0 (1.6)a | 10 | |||
| 3.0–5.5 m, 40% | 19.2 (8.0)a | 10 | |||