RT Journal Article SR Electronic T1 Wound Dressings on Red Maple and American Elm: Effectiveness After Five Years JF Arboriculture & Urban Forestry (AUF) FD International Society of Arboriculture SP 81 OP 87 DO 10.48044/jauf.1977.023 VO 3 IS 5 A1 Shigo, Alex L. A1 Wilson, Charles L. YR 1977 UL http://auf.isa-arbor.com/content/3/5/81.abstract AB Closure and internal compartmentalization of wounds on red maple and American elm were not stimulated by dressings of an asphalt-based material, orange shellac, or polyurethane varnish. After 5 years, decay fungi had infected many treated and control wounds. Some trees closed wounds rapidly; others closed wounds slowly regardless of the treatments.