Comparison by species of the longest sprout growth and standard errors In inches of trees trunk-Injected with Atrinal in 1984 versus untreated trees.
| 1984 | 1985 | 1986 | |
|---|---|---|---|
| Plane tree | * | ** | |
| Treated | 22.2 ±4.5 | 57.1 ±9.0 | .... |
| Control | 47.9 ±13.2 | 77.0 ±20.9 | .... |
| Red maple | * | ** | |
| Treated | 11.7 ±1.2 | 44.4 ±2.2 | .... |
| Control | 19.9 ±3.7 | 49.0 ±4.3 | .... |
| Norway maple | * | * | * |
| Treated | 8.3 ±1.0 | 48.4 ±2.4 | 64.8 ±3.8 |
| Control | 11.7 ±1.6 | 63.3 ±6.0 | 83.3 ±9.4 |