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kats at prcn.org
Wed Feb 11 05:14:52 EST 1998
Scott McPhee wrote in message ...
>Fomes annotosum seems to grow only on conifers.
I believe you are referring to Annosus Root Rot (Heterobasidion annosum). It
not only infects conifers, but also madrone and manzanita. I have heard that
in California 1.4 million acres of Ponderosa and Jeffrey Pine and 600,00
acres of true fir in Northern California are infested.
dwheeler at teleport.com wrote in message
<887046111.1076297732 at dejanews.com>...
>In article <newkirk-0802981224300001 at otto25.olywa.net>,
> newkirk at olywa.net (Kirk Johnson) wrote:
>> Perpetual growth is the creed of the cancer cell -Edward Abbey
>I have also heard that Fomes annotosum (Douglas fir root rot) is
>responsible for more old-growth forest death in the Pacific Northwest
>each year than clearcutting. However, Fomes annotosum grows best in
>former clearcuts. And, the only known way to control Fomes annotosum is
>to clearcut the affected area, and replant to deciduous trees
here in coastal bc, we deal with root rot (mainly phellinus weirii -
laminated root rot - and armillaria ostoyae) a bit differently. Annosus is
not too big of a problem on the coast. After the area is clearcut we
usually stump it then broadcast burn it. And, if conditions are acceptable,
we plant a different species of conifer (usually wester red cedar).
Unfortunately, in the past this kind of treatment was not done, so we have a
younger version of the same problem in many stands.
Annosus pockets are a bit smaller and easier to deal with - the spread is
not nearly as bad as the above-mentioned rots. Is it that much worse south
of the border? *G*
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