Physiological responses of 11-year-old trees to a root-collar treatment of flurprimidol (4 g/tree, June 1985). Measurements were made in August 1987.
| Species | Photosynthesis | Transpiration | Chlorophyll | |||
|---|---|---|---|---|---|---|
| Control | Treatment | Control | Treatment | Control | Treatment | |
| (Mg CO2 m-2 s-1) | (mg H2O m-2 s-1) | - -(mg m~2)- - | ||||
| Pin oak | 0.62 ± 0.07z | 0.47 ± 0.02 | 158 ± 31 | 143 ± 26 | 431 ± 35 | 438 ± 12 |
| Red maple | 0.66 ± 0.02 | 0.45 ± 0.03 | 143 ± 25 | 144 ± 25 | 436 ± 26 | 531 ± 31 |
| White ash | 0.49 ± 0.02 | 0.46 ± 0.04 | 79 ± 5 | 85 ± 2 | 414 ± 31 | 567 ± 28 |
| Black walnut | 0.52 ± 0.07 | 0.41 ± 0.05 | 108 ± 20 | 114 ± 21 | 336 ± 33 | 348 ± 21 |
↵z Standard error of the mean from mean of 4 leaves per tree.