annosum root disease (Heterobasidion annosum ) on Douglas-fir (Pseudotsuga menziesii ) - 1241675

annosum root disease
Heterobasidion annosum (Fr) Bref.

Host: Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco)
Descriptor: Symptoms
Description: An useful sign of annosus root disease is an irregular pattern of staining in root and butt heartwood. In Douglas-fir the stain is red-brown.
Image type: Field
Image location: United States

Photographer Information

Name: James W. Byler
Organization: USDA Forest Service
Country: United States

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Image Number: 1241675

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Image Citation:(?) James W. Byler, USDA Forest Service, Bugwood.org

Node Affiliation: University of Georgia

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Image uploaded on Wednesday, April 14, 2004
Image Information last updated on Wednesday, May 18, 2011