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Oregon State University Extension Service
EM 8877 • April 2006

E.M Goheen
USDA Forest Service, Pacific Northwest Region
Forest Health Protection
Central Point, OR

E. Hansen
Department of Botany and Plant Pathology
Oregon State University
Corvallis, OR

A. Kanaskie,
Oregon Department of Forestry
Salem, OR

N. Osterbauer
Oregon Department of Agriculture
Salem, OR

J. Parke
Department of Botany and Plant Pathology
Oregon State University
Corvallis, OR

J. Pscheidt
Department of Botany and Plant Pathology
Oregon State University
Corvallis, OR

G. Chastagner
Washington State University
Western Washington Research and Extension Center
Puyallup, WA