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Home → Publications → Seed and Seedling Diseases in the Western US → Fomes Annosus on White Fir in Colorado - Complete

Fomes Annosus on White Fir in Colorado - Complete

Fomes annosus is reported for the first time on white fir in Colorado. The pathogen was found in many stands in the southern portion of the State where white fir is a major component of the type. Infection centers often contained dead trees in older age classes and recently killed trees in the younger age classes. Windthrown trees with extensive root and butt decay were common within infection centers. Fomes annosus was not restricted to cutover stands; however, mortality caused by the pathogen was greater in such areas.


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