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Do Douglas-fir branches and roots have juvenile wood?

Creator:: Peterson, M. G., Dietterich, H. R., and Lachenbruch, Barbara
Abstract:: We sampled boles, branches, and roots of four Douglas-fir (Pseudotsuga menziesii var. menziesii) trees to learn a) whether branches and roots have a zone of juvenile wood, defined as a zone with progressive changes in wood density and/or tracheid length from the pith outward at successively greater cambial ages, and...
Resource Type:: Article
Full Text:: © 2007 by the Society of Wood Science and Technology INTRODUCTION The presence of juvenile wood is a

Wood density and fiber length in young populus stems: relation to clone, age, growth rate, and pruning

Creator:: DeBell, Dean S., Singleton, Ryan, Harrington, Constance A., and Gartner, Barbara L.
Abstract:: Cross-sectional disks were cut at two stem heights (1.5 m and 3.0 m) from 9-year-old trees of three Populus clones grown in an intensively-cultured plantation in western Washington. At age 1.5 years, when the trees averaged 3.4 m tall, half of the trees were pruned by removing all branches below...
Resource Type:: Article

Assessing Fungal Decay of Wood by Small-scale Toughness Tests

Creator:: Sexton, Camille M., Corden, Malcolm E., and Morrell, Jeffrey J.
Abstract:: Impact bending and breaking radius were used to measure loss in toughness caused by basidiomycetes isolated from wood. Small test pieces were used to accelerate testing. Wide differences were found among, and sometimes within, the 26 species tested. Brown-rot fungi tended to cause greater losses than white-rot fungi, but no...
Resource Type:: Article
Full Text:: 1993 by the Society of Wood Science and Technolol:y 376 WOOD AND FIBER SCIENC :E, OCTOBER 1993, V

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:: Society o f Wood Sc~encc and Technology Morrell-DECOMPOSITION OF METHAM SODIUM 6 3 Softwoods

Fungal staining of ponderosa pine sapwood: Effects of wood preconditioning and bioprotectants

Creator:: Morrell, Jeffrey J. and Sexton, Camille M.
Abstract:: Differences in stain susceptibility were evaluated on sterile and unsterile samples of freshly sawn, frozen and thawed, or oven-dried and rewetted ponderosa pine sapwood. Samples treated with sterile medium or with medium inoculated with either Pseudomonas putida or Bacillus subtilis were inoculated with selected wood-staining fungi. In general, fresh unsterile...
Resource Type:: Article
Full Text:: Scrmce, 25(4), 1993, pp 322-325 O 1993 by the Soclety of Wood Sclence and Technology Morrcll and

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:: Wood Science and Technology Morrrll-BIOASSAYING PRESERVATIVES TABLE 1. Preservatives evaluated by

Diffusion and sorption of the fumigant methylisothiocyanate in Douglas-fir wood

Creator:: Zahora, Andrew R. and Morrell, Jeffrey J.
Abstract:: The influence of moisture content (MC) and conventional preservative treatment on methylisothiocyanate (MIT) sorption and diffusion were investigated in Douglas-fir wood. In wood at 0% MC, the ratio of equilibrium MIT adsorption to desorption concentrations was low (0.2), but it increased rapidly to about 0.94 above 18% MC. Partition coefficients...
Resource Type:: Article
Full Text:: Technology 5 6 WOOD AND FIBER SCIENCE, JANUARY 1989, V. 21(1) TABLE 1 . Salts used for equilibrating

The influence of wood moisture content on the fungitoxicity of methylisothiocyanate in Douglas-fir heartwood

Creator:: Zahora, Andrew R. and Morrell, Jeffrey J.
Abstract:: High concentrations of the fumigant methylisothiocyanate (MITC) will effectively control decay fungi in large wood structures, but the fungitoxicity of low MITC concentrations and the influence of wood moisture content (MC) on its performance are not well understood. The MC of Douglas-fir heartwood greatly influenced the susceptibility of the decay...
Resource Type:: Article
Full Text:: Fiber Saence, 21(4), 1989, pp. 343-353 0 1989 by the Soc~ety of Wood Science and Technology 344

Effects of pruning on wood density and tracheid length in young Douglas-fir

Creator:: Gartner, Barbara L., Robbins, J. M., and Newton, M.
Abstract:: To study whether pruning young Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco var. menziesii) hastens the transition from juvenile to mature wood, we investigated the effects on wood properties in an intensively managed young plantation in the Coast Range of Oregon. Ten years after trees were pruned to a fixed height (3.4...
Resource Type:: Article
Full Text:: , pp. 304–313 © 2005 by the Society of Wood Science and Technology EFFECTS OF PRUNING ON WOOD DENSITY

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:: 340-345 0 7000 hy the Society of Wood Science and Technology Mankowtki und Morrrll--PATTERNS OF

ScholarsArchive@OSU

Do Douglas-fir branches and roots have juvenile wood?

Wood density and fiber length in young populus stems: relation to clone, age, growth rate, and pruning

Assessing Fungal Decay of Wood by Small-scale Toughness Tests

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

Fungal staining of ponderosa pine sapwood: Effects of wood preconditioning and bioprotectants

Bioassaying wood preservatives with Aspergillus niger

Diffusion and sorption of the fumigant methylisothiocyanate in Douglas-fir wood

The influence of wood moisture content on the fungitoxicity of methylisothiocyanate in Douglas-fir heartwood

Effects of pruning on wood density and tracheid length in young Douglas-fir

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

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