Growth of Colorado spruce trees for two seasons after July 2005 mid-summer application of the growth regulator paclobutrazol.
| PBZ rate (g/cm) | Lateral branch tips | Leader | ||
|---|---|---|---|---|
| 2005z | 2006 | 2005 | 2006 | |
| 0 | 10.1a | 4.5a | 19.7a | 10.2a |
| 1.6 | 10.0a | 3.0a | 19.0a | 4.5b |
| 3.2 | 9.1a | 3.1a | 17.8a | 4.8b |
↵zValues followed by the same letter in the same column for each type of measurement are not significantly different (P ≤ 0.05).