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The biologies of two dipterous predators of Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytdae) in western Oregon and Washington

Creator:: Johnsey, Richard Lee
Abstract:: The objectives of this study were: 1) to learn the life history and habits of Medetera aldrichii Wheeler and a Lonchaea sp. in association with the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, in western Oregon and Washington; 2) to determine if the larvae of M. aldrichii were predaceous on the Douglas-fir...
Resource Type:: Masters Thesis
Full Text:: Richard Lee Johnsey for the M.S. in Entomology --s (Name) (Degree) (Major) Date thesis is presented

Herbicidal effectiveness of trifluralin as influenced by methods of incorporation into the soil and depth of weed seed germination

Creator:: Gargano, Don Richard
Abstract:: This study was conducted to compare the effectiveness of four methods of incorporating the herbicide trifluralin into the soil, and to determine the interaction between depth of incorporation of trifluralin and depth of weed seed germination. Field experiments on green and dry peas were established in Oregon and Idaho. Trifluralin,...
Resource Type:: Masters Thesis
Full Text:: DON RICHARD GARGANO for the MASTER OF SCIENCE (Name) (Degree) (Major) ¿) (Date) in FARM CROPS

Studies on Heterostylum robustum (Osten Sacken) (Diptera : Bombyliidae), a parasite of Nomia melanderi

Creator:: Eppley, Richard Keith
Abstract:: Heterostylum robustum (Osten Sacken) is the principal parasite of the alkali bee, Nomia melanderi Ckll., one of the most efficient pollinators of alfalfa in the western United States. The purpose of the study was to determine the incidence of parasitism and to investigate the biology of H. robustum. The fly...
Resource Type:: Masters Thesis
Full Text:: : Bombyliidae), a parasite of Nomia melanderi AN ABSTRACT OF THE THESIS OF Richard Keith Eppley for the

An anatomical study of the needles and hypocotyls of Douglas-fir seedlings grown under various environments

Creator:: Tucker, Richard Edward
Abstract:: Two seed sources of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings were grown under several environments in controlled growth chambers and in a natural environment. All seedlings were grown for six months and then harvested. One purpose of this study was to observe environmental influences on the anatomy of the needle....
Resource Type:: Masters Thesis

Eigenfunction expansions for self-adjoint bilinear operators in Hilbert space

Creator:: Phillips, John Richard, 1934-
Abstract:: See pdf
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF JOHN RICHARD PHILLIPS for the Ph

Construction and evaluation of an airshed-episode model for air resource management

Creator:: Reiquam, Howard Edward, 1931-
Abstract:: A mathematical model of the atmosphere in an airshed is developed, which relates pollutant source distributions and intensities to the volume of air available for dispersion and to pollutant concentrations or air quality standards. It can be used as a tool for obtaining an answer to an air resource management...
Resource Type:: Dissertation
Full Text:: program committee, Dr. Richard Boubel, Dr. Donald Guthrie, and Professor John Tatom is gratefully

Seismic source characteristics from explosion generated P waves

Creator:: Trembly, Lynn Dale
Resource Type:: Dissertation
Full Text:: SOURCE CHARACTERISTICS FROM EXPLOSION GENERATED P WAVES Abstract approved Joseph W. BergJr The earth

The geography of the apple industry of the Chelan Valley, Washington

Creator:: Detering, Floyd John
Abstract:: The Chelan Valley is one of several valleys located on the eastern slope of the Cascade Mountains contributing to the leadership of Washington in apple production. Since the nature of the activity in the Chelan Valley is typical of all these producing areas,it was selected as a case study of...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGEMENT The author wishes to express his great debt to Dr. Richard Highsmith for his assistance and

A study of current practices in technical vocational curriculum development in community colleges of the western states

Creator:: Boss, Richard Dale, 1922-
Abstract:: The purpose of this study was to investigate the practices of curriculum development in the community colleges of the western states and make recommendations for guidelines that can be used to plan, implement, and evaluate technical vocational programs in the community colleges. The various functions of other organizations concerned with...
Resource Type:: Dissertation
Full Text:: curriculum development in community colleges in the western states AN ABSTRACT OF THE THESIS OF RICHARD

The reactions of p-toluenesulfinic acid with mercaptans and secondary alkyl sulfides

Creator:: Bray, Gary Ronald
Resource Type:: Masters Thesis
Full Text:: The reactions of p-Toluenesulfinic acid with mercaptans

ScholarsArchive@OSU

The biologies of two dipterous predators of Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytdae) in western Oregon and Washington

Herbicidal effectiveness of trifluralin as influenced by methods of incorporation into the soil and depth of weed seed germination

Studies on Heterostylum robustum (Osten Sacken) (Diptera : Bombyliidae), a parasite of Nomia melanderi

An anatomical study of the needles and hypocotyls of Douglas-fir seedlings grown under various environments

Eigenfunction expansions for self-adjoint bilinear operators in Hilbert space

Construction and evaluation of an airshed-episode model for air resource management

Seismic source characteristics from explosion generated P waves

The geography of the apple industry of the Chelan Valley, Washington

A study of current practices in technical vocational curriculum development in community colleges of the western states

The reactions of p-toluenesulfinic acid with mercaptans and secondary alkyl sulfides

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