@article {Doccola327, author = {Joseph J. Doccola and Peter M. Wild and Ilangovan Ramasamy and Paulina Castillo and Christine Taylor}, title = {Efficacy of Arborjet Viper Microinjections in the Management of Hemlock Woolly Adelgid}, volume = {29}, number = {6}, pages = {327--330}, year = {2003}, doi = {10.48044/jauf.2003.040}, publisher = {Arboriculture \& Urban Forestry (AUF)}, abstract = {Hemlock woolly adelgid (Adelges tsugae Annand) is an introduced homopteran that infests native eastern hemlock (Tsuga canadensis Carriere). It results in reduced tree vitality and, when untreated, death. A state-of-the-art microinjection device employing an air-over-hydraulic system was used to deliver a therapeutic dosage of imidacloprid into the active xylem tissues of affected hemlocks. Bioassays were conducted microscopically to determine HWA mortality post-treatment. Injected trees had significantly (p \< 0.05) lower HWA populations compared to untreated controls; mean mortality for injected trees was over twice that of noninjected trees. The Arborjet VIPER system shows promise as a management tool in the treatment of HWA.}, issn = {1935-5297}, URL = {https://auf.isa-arbor.com/content/29/6/327}, eprint = {https://auf.isa-arbor.com/content/29/6/327.full.pdf}, journal = {Arboriculture \& Urban Forestry (AUF)} }