Index Catalog // ScholarsArchive@OSU

Interaction of selected herbicides with soil constituents

Creator:: El-Madhun, Yousef Abdel Wahab
Abstract:: The behavior of six herbicides in soil was studied under controlled laboratory conditions. Sorption of bromacil, chiorotoluron and diuron was assessed by the batch equilibration procedure over a broad range of aqueous phase sorbate concentration. Linear equilibrium sorption constants (K[subscript p]) were slightly higher at 4° C than at 25°...
Resource Type:: Dissertation
Full Text:: appreciation to Dr. V. H. Freed and Dr. J. L. Young, my co-major professors for their friendship, advice, and

A kinetic analysis of herbicide degradation in soil

Creator:: Zimdahl, Robert L.
Resource Type:: Dissertation
Full Text:: following individuals: Dr. Virgil H. Freed whose fine example, encouragem nt and advice have contributed

Chemical and physical factors in the kinetics of herbicide penetration into plants

Creator:: López, Hernán
Abstract:: Penetration has long been recognized as an important factor in the action of chemicals on plants. The effectiveness of herbicides on such plants as blackberries is often thought to be limited by the failure to obtain adequate penetration through the cuticular barrier. A number of factors, among them relative humidity,...
Resource Type:: Dissertation
Full Text:: special debt of gratitude is owed to Dr. Virgil H. Freed for assistance in planning and conducting the

Commonalities in the professional education competencies of selected community college vocational instructors

Creator:: Lindahl, Donald Gene, 1935-
Abstract:: The purpose of this research was to determine, if there are and the nature of, the common professional education competencies of selected community college vocational instructors. The respondents in the study represented four instructors from each of 40 community colleges selected from the four western states of California, Colorado, Oregon...
Resource Type:: Dissertation
Full Text:: acknowledgement is also made to Dr. Virgil Freed, Dr. Pat Atteberry, Dr. James Armitage, and Dr. Royce Smith for

Sorption and phytotoxicity of triazine herbicides in neutral and calcareous soils

Creator:: Colbert, Floyd Oral
Resource Type:: Dissertation
Full Text:: , Department of Farm Crops, Dr. Virgil H. Freed, Department of Agricultural Chemistry, Dr. Frank H. Smith

Response of grain yield, plant height and kernel weight in three winter wheat crosses (Triticum aestivum, L. em Thell) to different methods of selection

Creator:: Salmeron-Zamora, Jose Juan
Abstract:: This study was undertaken to see if a method of handling segregating populations could be employed which combined the positive attributes of the traditional pedigree and-bulk methods. Derived F₅ lines from the pedigree, bulk, and what is identified as a modified bulk method, were obtained from three winter wheat crosses....
Resource Type:: Dissertation
Full Text:: L. Jackson, Roger G. Petersen and Virgil H. Freed members of my commitee for their time and

An analysis of the competitive position of Oregon hog producers

Creator:: Norton, Virgil Joseph
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF VIRGIL JOSEPH NORTON for the Ph. D

The distribution, growth habits, and control of German velvetgrass (Holcus mollis L.) in Western Oregon

Creator:: Lee, William O., 1911-
Abstract:: A study was conducted on German velvetgrass (Holcus mollis L.), a weedy, rhizomateous perennial grass introduced in the United States in relatively recent years, The purpose of this study was to learn more about its distribution, growth habits, and control under conditions found in Western Oregon. German velvetgrass infestations of...
Resource Type:: Dissertation
Full Text:: Graduate cornrnittee, Drs. T. M. ching, w. w. chilcote, and. v. H. Freed for help and suggestions

Thermal characteristics of Douglas-fir bark fiber 25⁰ to 250⁰C

Creator:: Short, Paul Henry
Resource Type:: Dissertation

An evaluation and criteria for implementation of a recreational motorboat educational licensing practice in Oregon

Creator:: Christensen, Donald Watson
Abstract:: In recent years almost all states have legislated educational and licensing programs to protect the welfare and property of citizens engaged in outdoor recreational pursuits. Such programs exist for automobile, motorcycle, airplane, and snowmobile operators. However, boating continues to be one of the major recreational outdoor activities where operators of...
Resource Type:: Dissertation
Full Text:: , Mike Freed, David Lawson, and Roger King for their scholarly criticism and continued interest in this

ScholarsArchive@OSU

Interaction of selected herbicides with soil constituents

A kinetic analysis of herbicide degradation in soil

Chemical and physical factors in the kinetics of herbicide penetration into plants

Commonalities in the professional education competencies of selected community college vocational instructors

Sorption and phytotoxicity of triazine herbicides in neutral and calcareous soils

Response of grain yield, plant height and kernel weight in three winter wheat crosses (Triticum aestivum, L. em Thell) to different methods of selection

An analysis of the competitive position of Oregon hog producers

The distribution, growth habits, and control of German velvetgrass (Holcus mollis L.) in Western Oregon

Thermal characteristics of Douglas-fir bark fiber 25⁰ to 250⁰C

An evaluation and criteria for implementation of a recreational motorboat educational licensing practice in Oregon

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