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Host selection, reproductive biology, host-specific development and mortality of the codling moth, Cydia pomonella (L.) (Lepidoptera: Torticidae), in apple and pear

Creator:: Marti, Santiago Marti
Abstract:: The biology and behavior of the codling moth, Cydia pomonella (L.), was studied to determine factors responsible for differences in susceptibility to moth damage among apple and pear cultivars. In release experiments, codling moth adults were intercepted in significantly greater numbers in host (apple, pear) than in non-host (maple) trees,...
Resource Type:: Dissertation
Full Text:: thank Dr. Helmut Riedl for his continuous advice and support of this project. I extend my thanks to my

The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

Creator:: Booth, Steven R.
Abstract:: This thesis addressed the potential of endemic predaceous and parasitic arthropods of the Hood River Valley, Oregon to suppress the pear psylla, Cacopsylla pyricola F8rster. Natural enemies adequately suppressed psylla in three of seven unsprayed orchards of differing vegetational settings, orchard age, and size. Relatively few psylla natural enemies dispersed...
Resource Type:: Dissertation
Full Text:: Hood River Valley. Oregon Abstract approved: Redacted for Privacy I I N.or Helmut Riedl This thesis

Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

Creator:: Kosittrakun, Manit
Resource Type:: Dissertation
Full Text:: Departme££--^f Horticulture Dean of Graduate ^qhool ■ 1-w v yu ^^\ Date thesis is presented

Integration of microbial and chemical controls against codling moth, Cydia pomonella (L.) : laboratory and field evaluation

Creator:: Bajwa, Waheed Ibrahim
Abstract:: The feasibility of managing codling moth, Cydia pomonella (L.), with mixtures of Bacillus thuringiensis-based microbial and selected chemical insecticides was studied under laboratory and field conditions. Joint actions (synergism, additivity and antagonism) of these mixtures were determined for both egg and larval stages. Higher rates of microbial control agents (MCAs),...
Resource Type:: Dissertation
Full Text:: , Dr. Helmet Riedl, Dr. Porter B. Lombard and Dr. Paul A. Roberts, fortheir suggestions and helpful

Pathways of glucose utilization and ribose synthesis in the chick embryo

Creator:: Coffey, Ronald Gibson
Abstract:: The production of C¹⁴O₂ metabolized from glucose labeled in specific carbon atoms by homogenates of chick embryonic and adult heart was compared by the radiorespirometric technique. Homogenates of early (two to five days of incubation) embryo hearts were found to utilize the phosphogluconate pathway of glucose catabolism to a greater...
Resource Type:: Dissertation
Full Text:: wishes to express his sincere gratitude to Dr. Robert W. Newburgh and Dean Vernon H. Cheldelin for

Symbiosis in the Pacific Ring of Fire : evolutionary-biology of Rhizopogon subgenus Villosuli as mutualists of Pseudotsuga

Creator:: Mujic, Alija Bajro
Abstract:: Rhizopogon is a large genus of ectomycorrhizal (EM) fungi that grows in association with host trees of the family Pinaceae. We have conducted a series of studies investigating the ecology and evolutionary biology of the EM symbiosis shared between R. subgenus Villosuli and trees of the genus Pseudotsuga. Two members...
Resource Type:: Dissertation
Full Text:: : ______________________________________________________ Joseph W. Spatafora Rhizopogon is a large genus of ectomycorrhizal (EM) fungi that grows in

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

The relationship between terminal values and health care preferences among Chinese students from the People's Republic of China and Taiwan attending Oregon State University

Creator:: Wright, Bernadette P.
Abstract:: The purpose of this study was to determine if significant relationships exist among terminal values, demographic variables and health care preferences for information and behavioral involvement for graduate students from the People's Republic of China and Taiwan. The Rokeach Value Survey and the Krantz Health Opinion Survey were used to...
Resource Type:: Dissertation
Full Text:: Oregon State University Abstract approved: Redacted for Privacy Wayne W. Haverson The purpose of this

Significance of pigments in radiation resistance of Micrococcus radiodurans

Creator:: Krabbenhoft, Kenneth Louis
Abstract:: An ecological study of a microorganism similar to that isolated in 1956 and designated as Micrococcus radiodurans indicated that the organism could be isolated from several different environments. By taking advantage of its radio-resistivity, high levels of gamma radiation were used in the isolation procedures to inactivate most of the...
Resource Type:: Dissertation
Full Text:: The author wishes to express his appreciation to Dr. Arthur W. Anderson for his guidance and

Diffusion, conductivity and spectral properties of mercury II ion in potassium chloride crystals

Creator:: Allen, Charles Anthony
Resource Type:: Dissertation
Full Text:: Dr. W. J. Fredericks for many helpful discussions on this project, and for providing research as

ScholarsArchive@OSU

Host selection, reproductive biology, host-specific development and mortality of the codling moth, Cydia pomonella (L.) (Lepidoptera: Torticidae), in apple and pear

The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

Integration of microbial and chemical controls against codling moth, Cydia pomonella (L.) : laboratory and field evaluation

Pathways of glucose utilization and ribose synthesis in the chick embryo

Symbiosis in the Pacific Ring of Fire : evolutionary-biology of Rhizopogon subgenus Villosuli as mutualists of Pseudotsuga

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

The relationship between terminal values and health care preferences among Chinese students from the People's Republic of China and Taiwan attending Oregon State University

Significance of pigments in radiation resistance of Micrococcus radiodurans

Diffusion, conductivity and spectral properties of mercury II ion in potassium chloride crystals

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