Laminated Root Rot In Western North America

Very large circular infection centers up to 40 ha or 100 ac are found in mountain hemlock stands in the high cascade mountains of central oregon.

Laminated root rot in western north america. Laminated root rot in western north america. Weirii a few species of plants such as western white pine and lodgepole pine are. Laminated root rot is an important tree disease of douglas fir and western red cedar in northwestern north america. In drier eastside types laminated root rot is commonly found on north facing slopes and stream bottoms although it may also occur in other locations.

This report gives an overview of the dis ease as it occurs in the pacific northwest in canada and the united states. By thies and sturrock 1995. Laminated root rot caused by phellinus weirii murr gilb is a serious root disease affecting douglas fir and other commercially important species of conifers in northwestern north america. Laminated root rot caused by phellinus weirii murr gilb is a serious root disease affecting douglas fir and other commercially important species of conifers in northwestern north america.

Laminated root rot also known as yellow ring rot is caused by the fungal pathogen phellinus weirii laminated root rot is one of the most damaging root disease amongst conifers in northwestern america and true firs douglas fir mountain hemlock and western hemlock are highly susceptible to infection with p. Phellinus sulphurascens pathogen of conifers in the northern hemisphere. This useful publication provides excellent photographs and summarizes the relevant information for the identification.