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Title: Potential concerns for tree response from stem injection
Author: Smith, Kevin T.; Lewis, Phillip A.;
Source: In: Onken Brad; Reardon, Richard, comps. Proceedings of the third hemlock woolly adelgid conference;2005 February 1-3; Asheville, NC. FHTET-2005-01. U.S. Department of Agriculture, Forest Service, Forest Health Technology Enterprise Team: 173-178.
Publication Series: Other
Description: Stem injection of imidacloprid is an available component of management strategies for hemlock woolly adelgid. Preliminary observations of similar treatments of maple and ash show that the injury sustained by injection warrants investigation of the wound response in eastern hemlock. Such investigations need adequate experimental controls to identify the role of hytoxicity of the active ingredient and the carrier formulation, delivery pressure, seasonality, and tree condition. External indicators such as bark cracks tend to underestimate the amount of cambial dieback. Evaluation of the wound response requires tree dissection. We suggest that the unintended consequences of treatment such as injection injury be considered and incorporated into the management decision process.
Keywords: stem injection, tree injection, compartmentalization, imidacloprid
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Smith, Kevin T.; Lewis, Phillip A. 2005. Potential concerns for tree response from stem injection. In: Onken Brad; Reardon, Richard, comps. Proceedings of the third hemlock woolly adelgid conference;2005 February 1-3; Asheville, NC. FHTET-2005-01. U.S. Department of Agriculture, Forest Service, Forest Health Technology Enterprise Team: 173-178.
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