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Basidiomycete colonization in Douglas-fir poles after 3 or 6 months of air-seasoning


, : Basidiomycete colonization in Douglas-fir poles after 3 or 6 months of air-seasoning. Forest products journal 46(5): 56-63

Basidiomycete colonization of sterile Douglas-fir pole sections was monitored over 3- and 6-month exposure periods at four Pacific Northwest sites. Basidiomycetes were isolated from 8.2 percent of cores removed from the pole sections after 3 months of exposure, which suggests that colonization occurs rapidly after the poles are peeled. Postia placenta was the most frequently isolated fungus, followed by Stereum hirsutum, Phanerochaete sordida, and Sistotrema brinkmanii. Postia placenta commonly inhabits decaying Douglas-fir poles in service. Climate conditions were not correlated with colonization rate, and site-specific climate indices were not useful for predicting the risk of fungal colonization. The lack of correlation suggests that fungal colonization of air-seasoning poles is controlled by factors other than temperature and rainfall. Douglas-fir poles are rapidly colonized by basidiomycetes and, even when air-seasoned for short periods, must be sterilized at some point during the treatment process.

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Related references

Przybylowicz, P.R.; Kropp, B.R.; Corden, M.E.; Graham, R.D., 1987: Colonization of Douglas-fir poles by decay fungi during air-seasoning. Poles in the forest and in 24 seasoning yards from northern Washington were sampled during the summers of 1981 and 1982. Poles were in 7 age classes: (a) freshly-cut, unpeeled poles sampled within 4 wk of felling; (b) unpeeled poles with bark inta...

Morrell, J.; Corden, M.; Graham, R.; Kropp, B.; Przybylowicz, P.S.ith, S.; Sexton, C., 1987: Basidiomycete colonization of air-seasoned, Douglas-fir poles. Proceedings annual meeting American Wood Preservers' Association3(83): 284-296

Morrell, J.; Newbill, M.; Sexton, C., 1991: Basidiomycete colonization of Douglas-fir poles after polyborate treatments. A variety of Basidiomycetes colonize air-seasoning Douglas-fir poles, and their presence raises concerns about the potential survival of decay fungi throughout the treatment process. We investigated the ability of polyborates to limit this coloniz...

Jenkins, J.H., 1939: The seasoning of Douglas Fir timbers and Western Red Cedar poles: a study of their air-seasoning rate and moisture gradient in the southern Coast region of British Columbia. Thirty-six Douglas Fir timbers 6 X 6 in., 12 X 12 in., 24 X 24 in. in cross-section and 36 Western Red Cedar pole sections were stored under maximum air-drying conditions. The average rate of drying was measured by periodic weighings. The moisture...

Smith, W.J., 1951: Changes in circumferential dimensions of Douglas Fir poles during seasoning. Circumferential measurements of 100 mountaintype Douglas Fir poles, 25 ft. long, were made at the butt, at 6 ft. from the butt, and at the top, when green, after 6, 9 and 12 months'air seasoning, and at the end of the 12 months' seasonin...

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Sexton C.M.; Smith S.M.; Morrell J.J.; Kropp B.R.; Corden M.E.; Graham R.D., 1992: Identity and distribution of basidiomycotina colonizing douglas fir poles during three years of air seasoning. Douglas fir pole sections exposed at four air-seasoning sites in the Pacific Northwest were extensively sampled for Basidiomycotina each year for 3 yr. Poles were rapidly colonized by a variety of Basidiomycotina, but four taxa tended to dominate....

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Smith, S.M.; Graham, R.D.; Morrell, J.J., 1987: Influence of air-seasoning on fungal colonization and strength properties of Douglas-fir pole sections. Twenty-five freshly peeled poles, 30-78 ft long, were sampled for decay fungi prior to being cut into 6-ft long sections and exposed in seasoning yards for 1, 2 or 3 yr. Half of the sections at each of the 4 locations were sprayed on the upper fac...