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Vegetation changes of communities containing medusahead (Taeniatherum asperum (Sim.) Nevski) following herbicide, grazing, and mowing treatments

Creator:: Turner, Robert Bruce
Abstract:: Studies were conducted from 1962 to 1966 to investigate the effectiveness of several practices in manipulating medusahead (Taeniatherum asperum (Sim. ) Nevski) infested and/or dominated ecosystems by releasing competition in favor of perennial grasses. Several herbicide treatments were evaluated for selective control of medusahead and cheatgrass (Bromus tectorum L. )...
Resource Type:: Dissertation
Full Text:: River hills of eastern Oregon. On foothill range in western Oregon, sheep grazing and mow- ing

A preliminary phytochemical investigation of Ephedra viridis Coville found in Oregon

Creator:: Aragones, Erlinda Negre
Abstract:: A species of Ephedra found in southeastern Oregon, identified as Ephedra viridis Coville is reported of medicinal value among the American Indian tribes and other dwellers of that locality in various affections such as venereal diseases, kidney and bladder disturbances, in stomach ulcers and abdominal pains, in delayed menstruation, as...
Resource Type:: Masters Thesis

A study of seasonal variation of the composition of forage plants of southeastern Oregon

Creator:: Jensen, Horace
Resource Type:: Masters Thesis
Full Text:: plants of southeastern Oregon (Nam) AN ABSTRACT OF THE THESIS OF Animal Huabandi'y - for (Degree

Some factors affecting the establishment and growth of improved forage species on Laughlin-like soils in western Oregon

Creator:: Valassis, Vlassios Thomas
Resource Type:: Dissertation
Full Text:: improved forage species on Laughlin-like soils in Western Oregon SOME FACTORS A'FECTING THE ESTABLISHMENT

The seasonal yield, quality, and utilization of Trifolium subterraneum in mixture with festuca arundinacea and Lolium perenne in western Oregon

Creator:: Sanders, Kenneth D. (Kenneth Dwayne), 1940-
Abstract:: In 1959, a large scale grazing study in western Oregon was initiated to compare the value of perennial ryegrass (Lolium perenne L.) with subclover (Trifolium subterraneum L.) and tall fescue (Festuca arundinacea Schreb.) with subclover, and to evaluate common use grazing on them. The present investigation was undertaken to determine...
Resource Type:: Masters Thesis
Full Text:: AND LOLIUM PERENNE IN WESTERN OREGON Abstract approve (Ma3or Professor) In 1959, a large scale

The relation of time and the water table to plant distribution on deflation plains along the central Oregon coast

Creator:: Newman, Kenneth Winston
Resource Type:: Masters Thesis
Full Text:: RELATION OF TIME AND THE WATER TABLE TO PLANT DISTRIBUTION ON DEFLATION PLAINS ALONG THE CENTRAL OREGON

The location, composition, and structure of old-growth forests of the Oregon coast range

Creator:: Juday, Glenn Patrick
Resource Type:: Dissertation
Full Text:: forests of the Oregon coast range AN ABSTRACT OF THE THESIS OF Glenn Patrick Juday for the degree of

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

Creator:: Wright, Carolyn E.
Abstract:: Astragalus diaphanus is a rare plant endemic to the John Day River drainage of north-central Oregon. This species has several interesting features, including the dimorphism of its fruit and its geographical isolation from the two nearest taxonomically related species, which occur in Colorado. This study addressed the species' distribution and...
Resource Type:: Masters Thesis
Full Text:: diaphanus is a rare plant endemic to the John Day River drainage of north-central Oregon. This species has

Guide to common forest-zone plants: Willamette, Mt. Hood, and Siuslaw National Forests

Creator:: Topik, Christopher, Hemstrom, Miles A., and United States. Forest Service. Pacific Northwest Region
Resource Type:: Technical Report

Regional gradient analysis and spatial pattern of woody plant communities in Oregon

Creator:: Ohmann, Janet L.
Abstract:: Knowledge of regional-scale patterns of plant community structure and controlling factors is largely qualitative and based on numerous local studies. Data from a subsample of 10,000 field plots were used to quantify and map compositional gradients of woody plant communities across Oregon forests. Canonical correspondence analyses explained 9-14% of the...
Resource Type:: Dissertation
Full Text:: Gradient Analysis and Spatial Pattern of Woody Plant Communities in Oregon. Abstract approved

ScholarsArchive@OSU

Vegetation changes of communities containing medusahead (Taeniatherum asperum (Sim.) Nevski) following herbicide, grazing, and mowing treatments

A preliminary phytochemical investigation of Ephedra viridis Coville found in Oregon

A study of seasonal variation of the composition of forage plants of southeastern Oregon

Some factors affecting the establishment and growth of improved forage species on Laughlin-like soils in western Oregon

The seasonal yield, quality, and utilization of Trifolium subterraneum in mixture with festuca arundinacea and Lolium perenne in western Oregon

The relation of time and the water table to plant distribution on deflation plains along the central Oregon coast

The location, composition, and structure of old-growth forests of the Oregon coast range

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

Guide to common forest-zone plants: Willamette, Mt. Hood, and Siuslaw National Forests

Regional gradient analysis and spatial pattern of woody plant communities in Oregon

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