Index Catalog // ScholarsArchive@OSU

Within and between plant dispersal and distributions of adult females and immatures of Neoseiulus californicus and N. fallacis (Acari: Phytoseiidae) in bean and apple plant systems

Creator:: Pratt, Paul D. (Paul David), 1970-
Abstract:: Intra- and interplant movement and dispersal of the predator mites Neoseiulus californicus (McGregor) and Neoseiulus fallacis (Garman) were studied on both lima bean (Phaseolus lunatus L.) and apple (Malus pumila Miller) branch plant systems that were seeded with excess numbers of the spider mite Tetranychus urticae Koch. Individuals of either...
Resource Type:: Masters Thesis
Full Text:: masters program. My other committee members, Marcos Kogan, Robin Rosetta and Ken Johnson were always

Effect of weather variation on economic results from grasshopper control tactics in Chad : a partial validation of GHLSIM

Creator:: Sheikh, Allah Ditta
Abstract:: Agricultural production in the Sahelian region of Africa is among the lowest in the world. Cyclical infestations of locusts and grasshoppers have contributed to this low productivity. The infestations appear to be triggered by heavy rainfall at the beginning of a crop season after extended drought. Because locusts and grasshoppers...
Resource Type:: Masters Thesis
Full Text:: to members of my committee, Drs. Larry Lev, Alice Morrow and Marcos Kogan for their interest and

Furaneol flavor compounds in ripening strawberry (Fragaria x ananassa Duch.)

Creator:: Sanz, Carlos Calvo
Resource Type:: Masters Thesis
Full Text:: : Patrick J. Breen, Ronald E. Wrolstad and my graduate representative, Marcos Kogan. Their valued comments

Attractivity of plant volatiles and a semichemical-based bait to the western spotted cucumber beetle, Diabrotica undecimpunctata Mannerheim (Coleoptera: Chrysomelidae)

Creator:: Hongtrakul, Tawatchai
Abstract:: The adult western spotted cucumber beetle (WSCB), Diabrotica undecimpunctata undecimpunctata Mannerheim is considered a major pest of snap beans grown for processing in Western Oregon. Control consists of 1 or 2 insecticide sprays prior to harvest. A commercial semiochemical-based insecticide bait, Adios TIC®, 1.3% carbaryl + 5% buffalo gourd root...
Resource Type:: Masters Thesis
Full Text:: to the members of my committee, Dr. Jeffrey J. Jenkins, Dr. Marcos Kogan, and Dr. Russell E. Ingham

Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems

Creator:: Pratt, Paul D.
Abstract:: We identified and evaluated a phytoseiid predator as a biological control agent of multiple spider mites pests that occur in ornamental nurseries. When comparing species, Neoseiulus fallacis (Garman) had a wider prey range than Galendromus occidentalis (Nesbitt), a higher probability of overwintering than Neoseiulus califomicus McGregor and was equally or...
Resource Type:: Dissertation
Full Text:: committee members, Jack DeAngelis, Jim Green, Marcos Kogan and William Proebsting were always generous

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:: other committee members: Dr.'s Paul Jepson, Marcos Kogan, Paul Chen, and Philip Proteau. I want to make

Entomopathogenic nematodes for biological control of the Colorado potato beetle, Leptinotarsa decemlineata (Say)

Creator:: Armer, Christine Andrea
Abstract:: The Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say), is the most devastating foliage-feeding pest of potatoes in the United States. Potential biological control agents include the nematodes Heterorhabditis marelatus Liu & Berry and Steinernema riobrave Cabanillas, Poinar & Raulston, which provided nearly 100% CPB control in previous laboratory trials. In...
Resource Type:: Dissertation
Full Text:: members who provided support, knowledge, and friendship: Russell Ingham, Marcos Kogan, Alison Moldenke

Biological control of Tetranychus urticae (Koch) on peppermint by Neoseiulus fallacis (Garman) : density relationships, overwintering, habitat manipulation and pesticide effects

Creator:: Morris, Mark Alan, 1954-
Abstract:: Several aspects affecting population trends and overwintering of Neoseiulus fallacis (Garman) on peppermint were examined. Neoseiulus fallacis was the most abundant phytoseiid predator mite found in peppermint surveys throughout the western U.S. Results of pesticide exclusion and cage studies showed that N. fallacis controlled Tetranychus urticae (Koch) on peppermint in...
Resource Type:: Dissertation

Total aboveground biomass and structure of tropical forest delineated by Projeto RADAMBRASIL in northern Rondonia, Brazil

Creator:: Cummings, Dian Lyn
Abstract:: Tropical forests are of global importance with respect to their influence on biogeochemical cycles, climatic patterns, and as large reservoirs of biodiversity. Yet, few studies have quantified their structure, biomass, and carbon pools; basic information necessary to better understand the global function of tropical forests. The RADAMBRASIL project was conducted...
Resource Type:: Masters Thesis

Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

Creator:: Dreves, Amy J.
Abstract:: In Oregon’s northern Willamette Valley, cabbage maggot (CM), Delia radicum (L.) (Diptera: Anthomyiidae) often renders Brassica root crops unmarketable. Scheduled insecticides are the only current control. Studies were conducted to: 1) describe and characterize spring emergence of CM flies and their seasonal flight activity relative to degree-day (DD) accumulations; 2)...
Resource Type:: Dissertation
Full Text:: am particularly grateful to Professors Denny Bruck, Paul Jepson, Tim Righetti, and Marcos Kogan for

ScholarsArchive@OSU

Within and between plant dispersal and distributions of adult females and immatures of Neoseiulus californicus and N. fallacis (Acari: Phytoseiidae) in bean and apple plant systems

Effect of weather variation on economic results from grasshopper control tactics in Chad : a partial validation of GHLSIM

Furaneol flavor compounds in ripening strawberry (Fragaria x ananassa Duch.)

Attractivity of plant volatiles and a semichemical-based bait to the western spotted cucumber beetle, Diabrotica undecimpunctata Mannerheim (Coleoptera: Chrysomelidae)

Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems

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

Entomopathogenic nematodes for biological control of the Colorado potato beetle, Leptinotarsa decemlineata (Say)

Biological control of Tetranychus urticae (Koch) on peppermint by Neoseiulus fallacis (Garman) : density relationships, overwintering, habitat manipulation and pesticide effects

Total aboveground biomass and structure of tropical forest delineated by Projeto RADAMBRASIL in northern Rondonia, Brazil

Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

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