Abstract
ABSTRACT: Research was conducted on control methods for Oriental bittersweet (Celastrus orbiculatus), pale swallow-wort (Cynanchum rossicum), and Morrow's honeysuckle (Lonicera morrowii) near Long Island Sound in Groton and East Lyme, Connecticut. These nonnative, invasive plants threaten the health of ecosystems at these sites and many other areas throughout the Northeast. For the Oriental bittersweet study, vines were treated at one of three timings (April, August, or November) in 2003 and evaluated in the summer of 2004. Treatments consisted of triclopyr ester formulations applied to the basal bark of uncut vines, or of triclopyr amine or glyphosate formulations applied to the stump surface of cut vines. The experiment was repeated with a different set of vines treated in 2004 and evaluated in 2005. Cut-stump herbicide treatments were generally more effective than basal-bark treatments at killing bittersweet vines. All cut-stump herbicide treatments were effective in reducing vine survival and number a...
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