- Seymour, Robert S.
College of Forest Resources, University of Maine, Orono
During 1970's, amid widespread controversy about the large scale, ongoing spruce budworm (Chrostoneura fumifera Clem.) protection program, Mott (1980) proposed a new strategy that gained wide support. The approach involved several steps. 1. refined delineation of a long term strategic 'protection zone" on the basis of wood supply analysts and detailed stand-type mapping; 2. carefully targeted aerial spray programs using detailed hazard rating and accurate spray delivery and 3. harvesting strategies that lead to permanent long term reductions in vulnerability (Diamond et all 1984). This report describes trends in tree mortality and growth reduction observed during 1980-1985, with special emphasis on testing the original hypotheses about differing vulnerablilities amongh the various stand types.