by Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre in Victoria, B.C .
Written in English
|Statement||Richard S. Hunt and Duncan J. Morrison.|
|Series||Forest pest leaflet -- 67|
|Contributions||Morrison, D.J., Canada. Natural Resources Canada., Canadian Forest Service., Pacific Forestry Centre.|
|The Physical Object|
|Pagination|| p. :|
Black-stain root disease in Douglas-fir was highly concentrated along roads in comparison to the forest at large . In an extensive survey of Oregon and Washington, 80% of infection centers occurred in disturbed stands . Soil disturbance alone can have the effect, but tree wounding and cutting also contribute. ISBN: OCLC Number: Notes: Caption title. "Canada-British Columbia Partnership Agreement on Forest Resource Development: FRDA II"--Cover. Black stain root disease is a vascular wilt disease that blocks the water conducting vessels of host trees. There are 2 races of G. wageneri; one infects primarily Douglas-fir and the other infects primarily ponderosa pine. Unlike other common root diseases in the Pacific Northwest, black stain root disease does not cause decay. Recognition: Dark-brown to purple-black stain in the sapwood of roots, root crowns, and lower stems are especially diagnos-tic. Growth reduction, foliage yellowing, distress cone crops, basal resinosis, rapid decline, death; symptoms may begin on one side of the tree. Disease Spread: Occurs in stands with a large component of.
Minwax PolyShades - Stain & Polyurethane in 1 Step, quart, Classic Black, Gloss by Minwax Only 20 left in stock (more on the way). Black Stain Root Disease. Leptographium wageneri (Kendrick) M. J. Wingfield (= Verticicladiella wageneri (Kendrick)) (teleomorph=Ophiostoma wageneri (Goheen & Cobb) Harrington) Deuteromycotina, Stilbellales, Stilbellaceae. Hosts:Leptographium wageneri has been reported in B.C. on Douglas-fir, lodgepole pine, western white pine, Engelmann and white spruce, and . Black stain root disease, like all other diseases caused by ophiostomatoid fungi, is associated with insect transmission (Hansen et al. ). Two root weevils (Pissodes fasciatus LeConte, J.L. Black stain root disease (BSRD) is a native root disease affecting several species across the West, but attacks mainly Douglas-fir in western Oregon. Foresters are aware of several “hot spots” where the disease has been particularly active in recent years, and there is concern that it might be expanding.
Annosus root disease Heterobasidion annosum. Spiniger meineckellum [anamorph] Armillaria root disease Armillaria solidipes. Armillaria spp. Black stain root disease Leptographium wageneri var. pseudotsugae: Blue stain fungus Grosmannia clavigera: Bleeding sap rot Stereum sanguinolentum: Brown crumbly rot Fomitopsis pinicola: Brown cubical rot. Since the first report of black stain root disease in B.C. in , this problem has been reported from many areas in the southern interior and coastal forests. Damage, symptoms and biology In the interior, up to 50% of the trees have been killed in some lodgepole pine stands years of age; infection of Douglas-fir and spruce is less common. Hemlock-willow rust, dwarf mistletoe, black stain root disease, red heart rot, hemlock sawfly, pine spittlebug, green velvet looper, western blackheaded budworm, etc. Reproduction system: Monoecious: Propagation: By seeds and cuttings: Seedling Development: Germination happens easily: Wildlife Value. Black stain was Montana. present in eight of 20 declining or DISCUSSION symptomless windthrown trees near the Black stain root disease of Douglas-fir margins of the centers. Neither A. mellea has been reported in California (3), LITERATURE CITED nor black stain was detected in the roots Oregon (), and Washington (4,5).