Index Catalog // ScholarsArchive@OSU

Spot seeding : Ponderosa and Jeffrey pine

Creator:: Wagg, John William Bruce and Oregon Forest Lands Research Center
Resource Type:: Technical Report
Full Text:: breeding. I Spot Seeding Ponderosa and Jeffrey Pine by J. W. Bruce Wagg IN 'lam rL r r Gi y ef

Laboratory decay resistance of preservative-treated red alder

Creator:: Mitchoff, M. E. and Morrell, Jeffrey J.
Abstract:: Alder represents an abundant but underutilized resource that has little natural resistance to decay. Treated alder might be used for stakes, posts, or other nonstructural applications. The performance of alder treated with chromated copper arsenate (CCA), copper 8 quinolinolate, zinc naphthenate (ZN), or thiocyanomethylthiobenzothiazole (TCMTB) was assessed in soil block...
Resource Type:: Article
Full Text:: ; Briggs and Bethel 1978; Wright 1987). Small alder logs are relatively inexpensive and may represent a

Bioassaying wood preservatives with Aspergillus niger

Creator:: Morrell, Jeffrey J.
Abstract:: The bioassay with Aspergillus niger is a simple way of determining the presence and amount of pentachlorophenol or tributyltin oxide in wood, but it does not appear useful for measuring strongly fixed chemicals such as chromated copper arsenate, borate, and fluoride. Its effectiveness in detecting other preservatives has not been...
Resource Type:: Article
Full Text:: ~nicals rn sapwood blocks to inhibit sporulation by Aspergillus niger. Arquad C-50 (W) NSS (T) NWD (W

Decomposition of metham sodium to methylisothiocyanate as affected by wood species, temperature, and moisture content

Creator:: Morrell, Jeffrey J.
Abstract:: The effect of various wood characteristics on decomposition of metham sodium to methylisothiocyanate in sixteen North American and Southeast Asian hardwoods and softwoods was investigated. While marked differences were noted in the degree of decomposition among some species, the relationship between decomposition and lignin content, extractive levels, wood pH, or...
Resource Type:: Article
Full Text:: ' decomp. temperature (C) 01%) (%I 019) (%I 019) (%) 019) (%) 019) (%) W (%) Softwoods Douglas-fir

Resistance of Selected Wood-Based Materials to Fungal and Termite Attack in Non–Soil Contact Exposures

Creator:: Morrell, Jeffrey J.
Abstract:: The resistance of three naturally durable heartwood species and a stranded giant bamboo product to fungal and termite (Coptotermes formosanus) attack was evaluated at a test site located near Hilo, Hawaii. Merbau (Intsia bijuga or I. palembanica) and ipe (Tabebuia spp.) were both exceptionally resistant to fungal and termite attack,...
Resource Type:: Article
Full Text:: Wood-Based Materials to Fungal and Termite Attack in Non–Soil Contact Exposures Jeffrey J. Morrell

Internal pressure measurement techniques and pressure response in wood during treating processes

Creator:: Schneider, Philip F., Levien, Keith L., and Morrell, Jeffrey J.
Abstract:: The development of pressure inside wood during preservative impregnation was studied using Douglas-fir heartwood and ponderosa pine sapwood. Pressure sensors mounted on sample holders provided the most reliable measurements. As expected, pressure equilibrated most rapidly with air as the treatment medium and ponderosa pine as the test species. Pressure changes...
Resource Type:: Article
Full Text:: Chemical Engineering and Jeffrey J. Morrell† Professor Department of Wood Science and Engineering Oregon

Copper, chromium, and arsenic levels in soils surrounding posts treated with chromated copper arsenate (CCA)

Creator:: Morrell, Jeffrey J. and Huffman, Jacob
Abstract:: The levels of copper, chromium, and arsenic in soil surrounding CCA-treated posts and beneath CCA-treated stakes were investigated at a plot near Gainesville, Florida. Metal levels were elevated in soil immediately adjacent to the treated wood, but decreased with distance away or depth. Mean extractable arsenic levels ranged from 1.74...
Resource Type:: Article
Full Text:: SURROUNDING POSTS TREATED WITH CHROMATED COPPER ARSENATE (CCA) Jeffrey J. Morrell† Professor Department of

Assessing Biocide Effects on Protoplasts of Wood Decay Fungi

Creator:: Rui, Chen and Morrell, Jeffrey J.
Abstract:: Hyphal fragments and protoplasts of two wood-degrading fungi, Postia placenta and Trametes versicolor, were used to examine the effects of two fungicides, copper sulfate and azaconazole, on fungal health (as measured by oxygen consumption, glucose utilization, potassium levels, cell regeneration, and copper uptake). Although both cell systems responded to the...
Resource Type:: Article
Full Text:: wall and can be produced from liquid cultures of filamentous fungi treat- W w d and Frber Scrence

Patterns of fungal attack in wood-plastic composites following exposure in a soil block test

Creator:: Mankowski, Mark and Morrell, Jeffrey J.
Abstract:: The ability of white and brown rot fungi to colonize wood-plastic composites was investigated by measuring weight loss and anatomical changes. Three composite materials were evaluated. The material containing a 70/30 wood-high density polyethylene (HDPE) mixture was most susceptible to fungal attack, while two different 50/50 wood-HDPE composites experienced little...
Resource Type:: Article
Full Text:: 15.8 (5.4) 0.3 (0.2) 1.3 (1.3) W. coco.s 9.9 (8.5) 1.8 (0.3) 2.3 (1.5) a Values rsprcrrnt means of

Durability of a changing western redcedar resource

Creator:: Freitag, Camille M. and Morrell, Jeffrey J.
Abstract:: The heartwood of western redcedar (Thuja plicuta) is known for its natural resistance to fungal attack, but some users of western redcedar utility poles have suggested that its durability may be diminished as suppliers begin to harvest trees from younger stands. The decay resistance of western redcedar samples from the...
Resource Type:: Article
Full Text:: Camille M. Freitag Senior Research Associate and Jeffrey J. Morrell'f Associate Professor

ScholarsArchive@OSU

Spot seeding : Ponderosa and Jeffrey pine

Laboratory decay resistance of preservative-treated red alder

Bioassaying wood preservatives with Aspergillus niger

Decomposition of metham sodium to methylisothiocyanate as affected by wood species, temperature, and moisture content

Resistance of Selected Wood-Based Materials to Fungal and Termite Attack in Non–Soil Contact Exposures

Internal pressure measurement techniques and pressure response in wood during treating processes

Copper, chromium, and arsenic levels in soils surrounding posts treated with chromated copper arsenate (CCA)

Assessing Biocide Effects on Protoplasts of Wood Decay Fungi

Patterns of fungal attack in wood-plastic composites following exposure in a soil block test

Durability of a changing western redcedar resource

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