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Forage production and utilization in relation to deer browsing of Douglas-fir seedlings in the Tillamook Burn, Oregon

Creator:: Crouch, Glenn Leroy, 1929-
Abstract:: The main objective of this investigation was to evaluate relationships between the production and utilization of forage and deer browsing of hand-planted Douglas-fir seedlings. A secondary purpose was to study some effects of selected physical and biological site factors on the survival and growth of fir seedlings. Field work was...
Resource Type:: Dissertation

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:: invaluable guidance and encouragernent given by rny major professor, Dr. Donald 'ilrl. Hedrick. A word of

Use of oak woodlands (Quercus garryana) for farm forestry and grazing in the Willamette Valley

Creator:: Hall, Frederick C.
Resource Type:: Masters Thesis
Full Text:: in the collection and malysis of data. Finally, tbi s student is deeply indebted to Donald w

Evaluation of species composition by four methods on two perennial grass pastures (Festuca arundinacae Schreb. and Lolium perenne L.) grazed lightly and heavily in western Oregon

Creator:: Pessot Zorich, Rafael
Abstract:: The present study was undertaken to evaluate the seasonal botanical composition of two grass pastures, tall fescue (Festuca arundinacea Schreb.) and perennial ryegrass (Lolium perenne L.). Botanical composition was determined by four methods: dry-weight-rank, weight-estimate, hand separation, and the constituent differential, with cattle and sheep grazing at two intensities. The...
Resource Type:: Masters Thesis
Full Text:: by my major professor, Dr. Donald W. Hedrick. Thanks are extended to Dr. Charles E. Poulton for

Composition of and production from an improved and an unimproved hill pasture

Creator:: Livingston, Kenneth Hubert
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGMENT The author is deeply indebted to Dr. D. · .. Hedrick, Assistant Professor of Range Management

Influence of range improvement practices on composition, production, and utilization of Artemisia deer winter range in central Oregon

Creator:: Urness, Philip J.
Abstract:: Recent emphasis on range improvement of sagebrush-bunch-grass types in Oregon has underscored the need for better understanding of their importance to deer winter range management. The objectives of this study were to evaluate the impact of various sagebrush control practices on the composition, production, and utilization of deer forage plants...
Resource Type:: Dissertation
Full Text:: extended to Dr. D. W. Hedrick who, as major profes- sor, has been exceedingly helpful in directing my

Seasonal cattle and sheep diets on Festuca arundinacea-Trifolium subterraneum and Lolium perenne-Trifolium subterraneum pastures in western Oregon

Creator:: Bedell, Thomas E.
Abstract:: Sheep and cattle dietary preferences were determined on tall fescue-subclover ( Festuca arundinacea-Trifolium subterraneum) and perennial ryegrass-subclover (Lolium perenne-Trifoliuni subterraneum) pastures in western Oregon during the spring and summer periods of 1964 and 1965. Esophageal-fistulated Willamette ewes and Hereford and Hereford-Angus yearling cattle were grazed separately on each pasture mixture...
Resource Type:: Dissertation
Full Text:: presented January 19, 1966 Typed by Marcia Ten Eyck bT ACKNOWLEDGEMENT Dr. D. W. Hedrick has been

The influence of selected environmental factors on diuron toxicity to winter wheat

Creator:: Homesley, Wylie Buress
Abstract:: Previous work has shown that diuron (3-(3, 4- dichlorophenyl)-1, 1-dimethylurea) is less toxic to fall-planted wheat than to wheat planted in the spring. Diuron has been a significant factor in increasing yields of winter wheat grown in Oregon's Willamette Valley. The influence of several selected environmental factors on diuron toxicity...
Resource Type:: Dissertation
Full Text:: . Appleby, Donald. W. Hedrick and Roger G. Peterson, I express thanks for personal interest in correcting

Effects of seeding and grazing on a clearcut-burn in a mixed-coniferous forest stand of the Wallowa mountain foothills

Creator:: Pettit, Russell Dean
Abstract:: Research was conducted in a mixed-coniferous forest stand that was clearcut, burned, and seeded in order to study early plant succession, grazing influences on native and introduced species, big game use, and environmental relationships vegetation, animal, and environmental research was carried out from 1965 to 1967 in three, five-acre exclosures...
Resource Type:: Dissertation
Full Text:: WALLOWA MOUNTAIN T'OOTHILLS Abstracr approved , Dr. D. W. Hedrick Research was conducted in a mixed

Methodology for cuticular identification of selected eastern Oregon range plants

Creator:: Schrumpf, Barry J.
Abstract:: Animal dietary preferences have been studied by feeding-site examinations, animal observation, and stomach and esophageal collections. Analysis of fecal material for undigested plant cuticle is another means for obtaining the same information. This study was conducted to: (1) prepare a microscope slide series depicting the surface features of leaves and...
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for privacy D. W. Hedrick Animal dietary preferences have been studied by feeding

ScholarsArchive@OSU

Forage production and utilization in relation to deer browsing of Douglas-fir seedlings in the Tillamook Burn, Oregon

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

Use of oak woodlands (Quercus garryana) for farm forestry and grazing in the Willamette Valley

Evaluation of species composition by four methods on two perennial grass pastures (Festuca arundinacae Schreb. and Lolium perenne L.) grazed lightly and heavily in western Oregon

Composition of and production from an improved and an unimproved hill pasture

Influence of range improvement practices on composition, production, and utilization of Artemisia deer winter range in central Oregon

Seasonal cattle and sheep diets on Festuca arundinacea-Trifolium subterraneum and Lolium perenne-Trifolium subterraneum pastures in western Oregon

The influence of selected environmental factors on diuron toxicity to winter wheat

Effects of seeding and grazing on a clearcut-burn in a mixed-coniferous forest stand of the Wallowa mountain foothills

Methodology for cuticular identification of selected eastern Oregon range plants

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