Index Catalog // ScholarsArchive@OSU

Spring nitrogen and cultivar effects on winter canola (Brassica napus L.) production in western Oregon

Creator:: Ferguson, Brock T.
Abstract:: Limited information is available on the effects of applied spring nitrogen (N) and cultivar on winter canola (Brassica napus L.) production in high-rainfall environments. The objectives of this investigation were: (i) to determine the effects of spring N and winter canola cultivars on seed and oil production characteristics, and (ii)...
Resource Type:: Masters Thesis
Full Text:: the plant canopy. Several studies indicate that seed yield of canola and oilseed rape is more

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

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

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

The ecology of Devil's club (Oplopanax horridum (J.E. Smith) Miq.) in western Oregon

Creator:: Roorbach, Ashley H.
Abstract:: Devil's club (Oplopanax horridum (J. E. Smith) Miq.) is an indigenous shrub of the Pacific Northwest, often found in the Tsuga heterophylla (western hemlock)/Devil' s club association in western Oregon. In the same family as ginseng, Devil's club is gaining attention for its medicinal properties. While traditional uses of Devil's...
Resource Type:: Masters Thesis

The quantity and composition of ground vegetation in different light environments under a Douglas-fir, Pseudotsuga menziesii (Mirb) Franco, stand in the Oregon Coast Range

Creator:: Temmes, Eeva Karin Marianna
Abstract:: The relationship between ground vegetation and light intensity under a 60 to 65-year-old Douglas-fir forest was investigated. Biomass and height of ground vegetation were measured and cover was estimated on small sample units (30 centimeters in diameter) on permanent research plots, one-acre in size, on the George T. Gerlinger Experimental...
Resource Type:: Masters Thesis

Relationship of nitrogen level to medusahead, Taeniatherum asperum (Sim.), competition with wheatgrass and silica content

Creator:: Brown, Dean Allen
Abstract:: Studies were conducted to determine the competitive ability of medusahead, Taeniatherum asperum (Sim.), for nitrogen when grown in association with perennial range grass species. The method used to determine this competitive ability was to compare the dry weight, percent nitrogen, and total nitrogen of medusahead and perennial wheatgrass species growing...
Resource Type:: Masters Thesis
Full Text:: is to complete its life cycle. This requirement can be met when the plant is in a very early stage

The effect of grazing interval on forage quality and production of meadow foxtail

Creator:: Wenick, Jess J.
Abstract:: For the last fifty years, meadow foxtail (Alopecurus pratensis L.) has been invading native flood meadows throughout the Harney Basin in southeastern Oregon. The expansion of this grass species has been the result of its broad climatic requirements and ability to withstand drought while thriving in saturated soil conditions for...
Resource Type:: Masters Thesis
Full Text:: Burns Oregon, were different in plant composition than they are today. In studies done by Cooper (1956

ScholarsArchive@OSU

Spring nitrogen and cultivar effects on winter canola (Brassica napus L.) production in western Oregon

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

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

A systematic and ecological study of Astragalus diaphanus (Fabaceae)

The ecology of Devil's club (Oplopanax horridum (J.E. Smith) Miq.) in western Oregon

The quantity and composition of ground vegetation in different light environments under a Douglas-fir, Pseudotsuga menziesii (Mirb) Franco, stand in the Oregon Coast Range

Relationship of nitrogen level to medusahead, Taeniatherum asperum (Sim.), competition with wheatgrass and silica content

The effect of grazing interval on forage quality and production of meadow foxtail

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