Trembling aspen and balsam poplar saplings under powerlines in section 24 of 63-11-W5 northwest of Whitecourt, Alberta were treated with basal applications of 4.8g or 14.4g triclopyr ester per liter of diesel oil or girdled. Poplar stems ranged from 1-6 cm in diameter. Treatments were replicated 3 times with 10 sample stems per species per replicate. Girdling was done on September 2 and 3, 1992 by stripping a minimum 2.5 cm wide band to below the cambium layer with a budding knife.

Opponents of herbicide use often suggest girdling as a viable alternative. This abstract addresses only efficacy, not costs....