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¹³C-CP MAS NMR study of decomposition of five coniferous woody roots from Oregon

Creator:: Hawkins, Robert E.
Abstract:: Using ¹³C cross polarization magic angle spinning nuclear magnetic resonance techniques on 5 species of dead trees from the northwest (western hemlock, Douglas fir, Sitka spruce, lodgepole pine and ponderosa pine) I tracked the lignin and cellulose content over a 22 to 36 year period in order to determine the...
Resource Type:: Masters Thesis
Full Text:: Five Coniferous Woody Roots From Oregon. Abstract approved William W. Warren Using '3C cross

Mediation of conifer root growth by mycorrhizal fungi and plant growth regulators

Creator:: Scagel, Carolyn F.
Abstract:: Many mycorrhizosphere microorganisms can produce plant growth regulating compounds in vitro. Plant growth regulating compounds are known to mediate root growth and development. In reforestation practices, conifer tree seedling growth and survival are linked to rapid root growth and development after outplanting. Multifactorial experiments were conducted to document variations in...
Resource Type:: Dissertation
Full Text:: Mediation of conifer root growth by mycorrhizal fungi and

Fungal diversity within decomposing woody conifer roots in Oregon

Creator:: Vandegrift, V. Eleanor
Abstract:: Previous studies have indicated that roots from five tree species (Picea sitchensis, Tsuga heterophylla, Pseudotsuga menziesii, Pinus ponderosa, and Pinus contorta) decompose at different rates across an environmental gradient in Oregon. Measurements of wood chemistry from each tree species as well as moisture and temperature from each location do not...
Resource Type:: Masters Thesis
Full Text:: within Decomposing Woody Conifer Roots in Oregon. I Abstract approved: _t.._S_,,i9'-n.L.,,a

Impact of Armillaria and annosus root diseases on stand and canopy structure, species diversity, and down woody material in a central Oregon mixed-conifer forest

Creator:: Fields, Kristen L. N.
Abstract:: White and grand fir are both valuable components of the mixed-conifer stand structure managed for late-successional reserves in central Oregon. However, they are often short-lived species because of high susceptibility to root diseases, defoliating insects, bark beetles, and wildfire. This study focuses on the effects of root diseases caused by...
Resource Type:: Masters Thesis
Full Text:: a Central Oregon Mixed-Conifer Forest Abstract approved: Gregory M. Filip White and grand fir are

Root decomposition in three coniferous forests : effects of substrate quality, temperature, and moisture

Creator:: Chen, Hua
Abstract:: Controls of substrate quality, temperature, and moisture on woody root decomposition in the Pacific Northwest were explored using chronosequences, time series, laboratory incubations, and simulation modeling approaches at three sites: Cascade Head (CAH), H. J. Andrews (HJA), and Pringle Falls Experimental Forests (PRF). In the chronosequence study, a structural component-oriented...
Resource Type:: Dissertation

Establishment report : permanent plots to evaluate the effects of Armillaria root disease in precommercially thinned stands

Creator:: Byler, James W., Stewart, C. A., Hall, L. D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Methods used to establish permanent plots in precommercially thinned and unthinned stands to monitor root disease development are described. Plots were established in 22 Armillaria-infested stands in northern Idaho and western Montana. The proportion of trees dead and infected was significantly higher for planted than for natural regeneration at the...
Resource Type:: Technical Report
Full Text:: ), Oregon and Washington (Filip 1977, Shaw & Roth 1978), and British Columbia (Morrison 1981). Root disease

Root crops

Creator:: Oregon State College. Agricultural Experiment Station and Hyslop, G. R. (George Robert), 1884-
Abstract:: Published March 1925. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: 3O7 DOCUM E COLLEC OLLECTJ0N OREGON AGRICULTURAL COLLEGE

Evaluation of root diseases of containerized conifer seedlings at the Champion Timberlands Nursery, Plains, Montana

Creator:: James, Robert L., Gilligan, Carma J., Reedy, V., and United States. Forest Service. Northern Region
Abstract:: Investigations of containerized conifer seedling root diseases at the Champion Timberlands Nursery revealed that Fusarium oxysporum was most commonly isolated from seed, seedling roots, and styroblock containers. Amount of seed infection varied widely among the seedlots tested, but was usually below 5 percent. Runningwater rinses did not reduce amounts of...
Resource Type:: Technical Report
Full Text:: plague containerized conifer seedling production is root disease caused by Fusarium spp. (James 1984a

Dry coniferous forests in the Western Oregon Cascades

Creator:: Means, Joseph E.
Abstract:: Pseudotsuga menziesii dominates the forests of the Pacific Northwest. But though it is dominat, Tsuaa heteroohylla or Abies amabilis is usually climax. Many researchers have studied Pseudotsuga on the widespread mesic sites where it is seral, but few have examined the relatively rare ecosystems in which Pseudotsuga or its associate...
Resource Type:: Dissertation
Full Text:: Dry coniferous forests in the Western Oregon Cascades

Understanding names of Oregon trees

Creator:: Leavengood, Scott A. and Oregon State University. Extension Service
Abstract:: It’s little wonder that people are confused by tree names. Foresters and lay people often name a tree based on its physical appearance, the wood products industry may call the tree by another name based on the characteristics of the wood, and botanists name a tree based on its anatomical...
Resource Type:: Technical Report
Full Text:: UNDERSTANDING NAMES OF OREGON TREES S. Leavengood Scott Leavengood, Extension wood products agent, Washington

ScholarsArchive@OSU

¹³C-CP MAS NMR study of decomposition of five coniferous woody roots from Oregon

Mediation of conifer root growth by mycorrhizal fungi and plant growth regulators

Fungal diversity within decomposing woody conifer roots in Oregon

Impact of Armillaria and annosus root diseases on stand and canopy structure, species diversity, and down woody material in a central Oregon mixed-conifer forest

Root decomposition in three coniferous forests : effects of substrate quality, temperature, and moisture

Establishment report : permanent plots to evaluate the effects of Armillaria root disease in precommercially thinned stands

Root crops

Evaluation of root diseases of containerized conifer seedlings at the Champion Timberlands Nursery, Plains, Montana

Dry coniferous forests in the Western Oregon Cascades

Understanding names of Oregon trees

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