Index Catalog // ScholarsArchive@OSU

Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

Creator:: Katundu, Juma
Abstract:: Levels of resistance to six selected insecticides of eleven field populations of the filbert aphid Mvzocallis coryli (Goetze) were determined by using the leaf-dip residue technique. Test insecticides included compounds widely used in commercial filbert orchards, namely, carbaryl, diazinon, endosulfan, phosalone, fenvalerate and oxydemetonmethyl. Aphid samples were collected within a...
Resource Type:: Masters Thesis
Full Text:: P. Paine for serving on my committee. I thank Jim Calkin, Steve Booth and Russell Messing for

Growth and yield of unmanaged stands of quaking aspen on the upper Navajo River in the Rocky Mountains of southwest Colorado

Creator:: Clendenen, Gary Wayne
Abstract:: An average stand diameter yield table and a diameter growth per decade table are presented for unmanaged stands of quaking aspen in southwest Colorado. The yield table presents yields per tree for the following utilization standards: 1. total cubic-foot volume minus the stump, 2. cubic-foot volume to a 4-inch top,...
Resource Type:: Masters Thesis

An evaluation of the use of tarif tables in second growth Douglas-fir

Creator:: Marshall, David D.
Abstract:: The Washington State Department of Natural Resources' Comprehensive Tree-Volume Tarif Tables are a set of preconstructed local volume tables. This can increase "on plot" efficiency since only diameters are necessary to obtain volumes after the proper table for the given diameter/height relationship is accessed. The tables are accessed and indexed...
Resource Type:: Masters Thesis

The evaluation of competitive stress index as a measure of stand density for young growth Douglas-fir

Creator:: Smith, Stephen H.
Abstract:: The study evaluates the use of Competitive Stress Index (CSI) as a quantitative measure of stand density in a young-growth Douglas-fir stand in Western Oregon which had been subjected to various thinning regimes. Operational applications of the index are examined and new methodologies presented for the analysis of tree and...
Resource Type:: Masters Thesis

A comparative study of three log rules commonly used in the Pacific Northwest, U.S.A.

Creator:: Paixao, Julio De Castro
Abstract:: A comparative study was done on data collected by Weyerhaeuser Company on l,6144 second-growth Douglas-fir, Pseudotsuga menziesii, trees. The variable used in the study was the percent difference, positive or negative, between the volumes given by each of three different log rules and the standard tree volumes determined by Weyerhaeuser...
Resource Type:: Masters Thesis

Comparative development of a thinned and a natural Douglas-fir stand from 45 to 60 years of age

Creator:: Groman, William A.
Abstract:: An understanding of the dynamics of individual tree and stand growth, development, and structural patterns during the immature formative years of a commercial species is essential to determine correct thinning practices necessary to attain desired objectives. This study compared a natural, medium-site Douglas-fir stand and an adjacent similar stand released...
Resource Type:: Dissertation

A comparative economic analysis between log scaling practices

Creator:: Lewis, Charles Stewart
Abstract:: Many centers of population in the Pacific Northwest are dependent upon employment in the forest based industries. Mary of these timber dependent communities look to the public forests for their raw wood requirements. In some localities the installed capacity has outstripped the local wood supply. This necessitates reaching into other...
Resource Type:: Masters Thesis

Effects of stand density on site index in thinned stands of Douglas-fir in the Pacific Northwest

Creator:: Zumrawi, Abdel Azim M. A.
Abstract:: In site index studies, the hypothesis that height growth of most conifers is independent of stand density is commonly accepted. However, some studies have shown height growth to be influenced by density particularly on medium to poor sites. In this study two locations representing a high quality site (Hoskins area,...
Resource Type:: Masters Thesis
Full Text:: valuable assistance, suggestions and hours of consultation given by Dr. David P. Paine are gratefully

Examining bias in estimating the response variable and assessing the effect of using alternative plot designs to measure predictor variables in diameter growth modeling

Creator:: Zumrawi, Abdel Azim M. A.
Abstract:: Diameter growth of Douglas-fir (Pseudotsuqa menziesii (Mirb.) Franco) estimated from increment cores was compared with that obtained from repeated measurements of tree diameter on permanent plots located in two Douglas-fir study areas in the central Coast Range of Oregon. Growth was measured for a 6-year period (1979- 1985). Diameter growth...
Resource Type:: Dissertation

Spatial and temporal changes in stream network topology : post-eruption drainage, Mount St. Helens

Creator:: Parsons, Michael Raymond
Resource Type:: Dissertation

ScholarsArchive@OSU

Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

Growth and yield of unmanaged stands of quaking aspen on the upper Navajo River in the Rocky Mountains of southwest Colorado

An evaluation of the use of tarif tables in second growth Douglas-fir

The evaluation of competitive stress index as a measure of stand density for young growth Douglas-fir

A comparative study of three log rules commonly used in the Pacific Northwest, U.S.A.

Comparative development of a thinned and a natural Douglas-fir stand from 45 to 60 years of age

A comparative economic analysis between log scaling practices

Effects of stand density on site index in thinned stands of Douglas-fir in the Pacific Northwest

Examining bias in estimating the response variable and assessing the effect of using alternative plot designs to measure predictor variables in diameter growth modeling

Spatial and temporal changes in stream network topology : post-eruption drainage, Mount St. Helens

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