The percent occurrence of trunk canker by severity In Atrinal-treated trees. Degree of severity Is based on ratings defined in Methods and Materials.
| n1 | treated | Severity | |||
|---|---|---|---|---|---|
| 1 | 2 | ►2 | total | ||
| Plane tree | |||||
| 13 | yes | 0 | 7 | 0 | 7 |
| 4 | no | 0 | 0 | 0 | 0 |
| Red maple | |||||
| 45 | yes | 24 | 16 | 35 | 75 |
| 18 | no | 11 | 0 | 5 | 16 |
| Norway maple | |||||
| 138 | yes | 29 | 11 | 6 | 46 |
| 49 | no | 4 | 6 | 0 | 10 |
↵1 sample size.