Index Catalog // ScholarsArchive@OSU

Enhancing the predatory potential of hoverflies on aphids in Oregon broccoli fields with floral resources

Creator:: Ambrosino, Mario D.
Abstract:: Four key aspects of the relationship between predatory hoverflies and the aphid pest Brevicoryne brassicae L. on broccoli were investigated in the Willamette Valley, Oregon USA: 1) the relationship between aphid density and hoverfly oviposition, 2) the larval voracity of key hoverfly species, 3) the preferences of hoverflies and broccoli...
Resource Type:: Dissertation
Full Text:: the other members of my committee, Dr. Peter McEvoy, Dr. Glenn Fisher, and Dr. Bill Proebsting for

Evaluating benthic macroinvertebrates as bio-indicators of freshwater habitat quality in an eastern Oregon agro-ecosystem

Creator:: Scherr, Melissa A.
Abstract:: The effect of anthropogenic disturbance on river systems is gaining attention, and concerns about the state of freshwater natural resources are increasing globally, as are efforts to restore habitat that has been degraded by disturbance. In rivers, non-point source pollution affects the physical characteristics of the habitat and the endemic...
Resource Type:: Dissertation
Full Text:: the remaining members of my graduate committee, Dr. Stan Gregory, Dr. Glenn Fisher and Dr. Joe

Sampling methods and injury thresholds for western spotted cucumber beetle in snap beans

Creator:: Weinzierl, Richard Alan
Resource Type:: Dissertation
Full Text:: professor, Dr. Ralph Berry, and to the members of my committee, Dr. Glenn Fisher, Dr. Jeff Miller, Dr

Inheritance of Septoria leaf blotch resistance and the possible influence of heading date and plant height on the disease expression in a winter wheat cross

Creator:: Camacho Casas, Miguel Alfonso
Abstract:: Parental lines, Fi's and segregating populations (F₂, F₃ and BC's) including reciprocals were evaluated under field conditions to determine if genetic resistance per se exists for Septoria Leaf Blotch in a selected winter wheat cross. The experiment was conducted over a three year period with both natural infection and artificial...
Resource Type:: Dissertation
Full Text:: Petersen, Chris Mundt and Glenn Fisher for serving in my graduate committee and reviewing this manuscript

Interactions of Amphorophora agathonica Hottes with raspberry viruses and resistant red and black raspberry

Creator:: Lightle, Danielle
Abstract:: In recent years, red raspberry production in Washington and British Columbia has been severely limited by a newly emerged virus complex that causes symptoms of crumbly fruit. The complex is comprised of three viruses: Raspberry bushy dwarf virus (RBDV), Raspberry leaf mottle virus (RLMV) and Raspberry latent virus (RpLV). Both...
Resource Type:: Dissertation
Full Text:: the way. I also thank my committee members: Len Coop, Glenn Fisher, Bob Martin, and Pat Hayes for

Sampling and management of garden symphylans (Scutigerella immaculata Newport) in western Oregon

Creator:: Umble, Jon R.
Abstract:: Garden symphylans (Scutigerella immaculata Newport) are increasingly important pests of below-ground parts of over 100 crops in Oregon. The focus of our work was to improve S. immaculata management through 1) development of a bait sampling method, 2) examination of the susceptibility of selected crops to S. immaculata feeding in...
Resource Type:: Dissertation
Full Text:: guidance in developing and executing this research. I also thank my committee, Glenn Fisher, Andy

Absciscic acid induction of environmental stress tolerance in plant cells

Creator:: Tanino, Karen K.
Resource Type:: Dissertation
Full Text:: Burke, and am appreciative of Drs. Joe Zaerr and Glenn Fisher for serving on my committee when my

Description and analysis of dietary preference of lingcod in the nearshore zone, Oregon

Creator:: Tinus, Craig A.
Abstract:: The lingcod (Ophiodon elongatus) is an important groundfish species in both recreational and commercial fisheries of the Northeastern Pacific. It is a large, fast-growing, generalist predator of invertebrates and fishes. In response to concerns that lingcod may limit populations of rockfishes (Sebastes spp.), I compared the diets of 375 adult...
Resource Type:: Dissertation
Full Text:: , Mark Hixon, David Noakes, and Jessica Miller served as an encouraging and helpful committee. Glenn

Distributional patterns and taxonomic structure of diatom assemblages in Netarts Bay, Oregon

Creator:: Whiting, Mark Carlos
Abstract:: Epiphytic, planktonic and benthic diatom assemblages were investigated in Netarts Bay, Oregon. Samples were collected for a one-year period from February 1980 to March 1981. A planktonic flora was observed only during periods of offshore enrichment when marine neritic species were abundant and were transported into the bay by tidal...
Resource Type:: Dissertation
Full Text:: Frey and Dr. Glenn Fisher who served as substitutes. These patient men were inconvenienced by

Biology and management of Meloidogyne chitwoodi using oxamyl on potato in the western United States

Creator:: David, Nicholas L.
Abstract:: Field trials were conducted during 2001 to 2003 to investigate soil population dynamics of Meloidogyne chitwoodi, tuber symptom suppression using oxamyl, and post-harvest tuber symptom development on short-season potato varieties Russet Norkotah and Russet Nugget (San Luis Valley only). The experiments were located in the San Luis Valley in Colorado,...
Resource Type:: Dissertation

ScholarsArchive@OSU

Enhancing the predatory potential of hoverflies on aphids in Oregon broccoli fields with floral resources

Evaluating benthic macroinvertebrates as bio-indicators of freshwater habitat quality in an eastern Oregon agro-ecosystem

Sampling methods and injury thresholds for western spotted cucumber beetle in snap beans

Inheritance of Septoria leaf blotch resistance and the possible influence of heading date and plant height on the disease expression in a winter wheat cross

Interactions of Amphorophora agathonica Hottes with raspberry viruses and resistant red and black raspberry

Sampling and management of garden symphylans (Scutigerella immaculata Newport) in western Oregon

Absciscic acid induction of environmental stress tolerance in plant cells

Description and analysis of dietary preference of lingcod in the nearshore zone, Oregon

Distributional patterns and taxonomic structure of diatom assemblages in Netarts Bay, Oregon

Biology and management of Meloidogyne chitwoodi using oxamyl on potato in the western United States

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