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Arboriculture & Urban Forestry Online
Volume 11, Issue 2 — February 1985

Effect of Tree Size, Hole Location, and Wetwood Fluxing on Healing of Injection Wounds in American Elms    (View PDF)

Robert W. Stack

Abstract: Elm trees treated by injection for protection from Dutch elm disease were examined after 22 months. The degree of healing of injection wounds was determined. Injection holes in roots healed faster than those in stems, and with notable exceptions those on smaller trees faster than those on larger trees. There was no relationship between wetwood symptoms on the tree and healing of injection sites.


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