Index Catalog // ScholarsArchive@OSU

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

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 rot of sweet corn in western Oregon

Creator:: Oregon State University. Extension Service, Hoinacki, Beth, Powelson, Mary L., and Ludy, Robin
Abstract:: In the past decade, Oregon produced on average 344,000 tons of sweet corn for processing on 43,000 acres annually, which ranked the state fourth nationally. Most Oregon sweet corn is grown in the Willamette Valley where, along with green beans, it is a mainstay of the processed vegetable industry. However,...
Resource Type:: Technical Report
Full Text:: Root Rot of Sweet Corn in Western Oregon, EM 8859 (Oregon State

Managing insects and diseases of Oregon conifers

Creator:: Shaw, David Carl, 1955-, Oester, Paul T., Filip, Gregory M., and Oregon State University. Extension Service
Abstract:: Discusses options for managing major insect pests and diseases of conifers in Oregon forests: bark beetles, wood borers, and ambrosia beetles; defoliators; aphids, adelgids, and scale insects; terminal and branch insects and pitch moths; root diseases; stem decays; foliage diseases; canker diseases and canker-causing rust diseases; and mistletoes. Extensive references...
Resource Type:: Technical Report
Full Text:: Diseases of Oregon Conifers D.C. Shaw, P.T. Oester, and G.M. Filip EM 8980 • June 2009 Archival copy

Simultaneous equation estimation for individual tree growth in young Southern Oregon and Northern California conifer plantations

Creator:: Hamann, Jeff D.
Abstract:: This thesis presents methods for obtaining asymptotically efficient and consistent parameters and variance estimates for simultaneous equations in a forest growth modelling context. Ordinary Least Squares (OLS), Seemingly Unrelated Regressions (SUR), Two-Stage Least Squares (2SLS) and Three- Stage Least Squares (3SLS) are presented for linear models. The variables, model types...
Resource Type:: Masters Thesis

Enhanced height-growth-rate equations for undamaged and damaged trees in southwest Oregon

Creator:: Hann, David W., Hanus, Mark L., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting the 5-yr height growth rate of a tree are presented for six conifer species from southwest Oregon. Equations for the combination of undamaged and damaged trees were estimated with weighted nonlinear regression techniques. These equations are being incorporated into the new southwest Oregon version of ORGANON, a...
Resource Type:: Technical Report
Full Text:: height growth rate of a tree are presented for six conifer species from southwest Oregon. Equations for

Serial manure amendments : effects on soil properties and root rot of sweet corn

Creator:: Cox, Bonnie S. Hoffman
Abstract:: The effect of serial (multiple-year) organic matter (OM) amendment on soil properties has been described in some cropping systems, although less is known about the effect of serially amended field soils on soil-borne plant diseases. The objectives of this study were to describe the effects of the third and fourth...
Resource Type:: Masters Thesis
Full Text:: Properties and Root Rot of Sweet Corn by Bonnie S. Hoffman Cox A THESIS submitted to Oregon State

Effects of fertilization at the time of planting on field performance of 1+1 Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] seedlings

Creator:: Alzugaray Oswald, Patricio Javier
Abstract:: To study the combined effects of seedling quality and fertilization at the time of planting, three experiments were established in western Oregon during the winter of 2000. The first experiment investigated the effect of preplanting rootvolume and fertilization rate on the field performance of 1+1 Douglas-fir seedlings during two growing...
Resource Type:: Masters Thesis
Full Text:: time of planting, three experiments were established in western Oregon during the winter of 2000. The

Effects of weed control on vegetation dynamics in Pacific Northwest conifer plantations

Creator:: Chen, Fen-Hui
Abstract:: Weed control in Pacific Northwest forests has been criticized for its potential impact on biodiversity. Changes were evaluated in conifer growth, diversity of vegetation in situ and of recruiting plants through different regeneration mechanisms after applying temporally-varied weed control by herbicide treatments based on the critical period concept. Conifer size...
Resource Type:: Dissertation

ScholarsArchive@OSU

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

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 rot of sweet corn in western Oregon

Managing insects and diseases of Oregon conifers

Simultaneous equation estimation for individual tree growth in young Southern Oregon and Northern California conifer plantations

Enhanced height-growth-rate equations for undamaged and damaged trees in southwest Oregon

Serial manure amendments : effects on soil properties and root rot of sweet corn

Effects of fertilization at the time of planting on field performance of 1+1 Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] seedlings

Effects of weed control on vegetation dynamics in Pacific Northwest conifer plantations

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