Index Catalog // ScholarsArchive@OSU

Characteristics of Typhlodromus americanus Chant and Yoshida-Shaul (Acari: phytoseiidae) as a biological control agent of Oligonychus ununguis (Jacobi) (Acari: tetranychidae)

Creator:: Horton, Rene N.
Abstract:: The life history, temperature, humidity, and feeding requirements of the phytoseiid predator mite, Typhlodromus americanus Chant and Yoshida-Shaul were tested in the laboratory. Occurance of the mite in the field during different times of the year was investigated as well. Effects of temperature and humidity on egg hatch, the feeding...
Resource Type:: Masters Thesis
Full Text:: : Tetranychidae). Abstract approved: Jack DeAngelis The life history, temperature, humidity, and feeding

Biology and management of a mushroom-infesting sciarid fly (Diptera: Sciaridae) in relation to room-to-room dispersal

Creator:: Mehelis, Christopher N.
Abstract:: The purpose of this research is two fold. First to improve pest management of the sciarid fly (Diptera: Sciaridae) by better defining its relation to mushroom production. Secondly, to explore some of the factors and aspects of the biology of the fly which may increase room to room dispersal rates...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved Jack DeAngelis The purpose of this research is two fold. First to improve pest

Seasonal abundance, distribution, and migration of the clover aphid, Nearctaphis bakeri (Cowen) in red clover

Creator:: Dreves, Amy J.
Abstract:: Four sampling techniques were evaluated to estimate clover aphid, Nearctaphis bakeri (Cowen), abundance in red clover fields in the Willamette Valley. The Berlese funnel method detected one to four times more aphids than other sampling techniques. Visual assessment often underestimated the high aphid densities during the flowering and seeding of...
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy Abstract approved:\ Jack DeAngelis Four sampling techniques were evaluated to

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Creator:: Sether, Diane M.
Abstract:: Peppermint, Mentha piperita 'Black Mitcham' was established as a host for tomato spotted wilt virus-impatiens serotype (TSWV-I). TSWV-I infection of peppermint, initially observed in a research greenhouse (Corvallis, OR), included stunting and downward curling of leaves accompanied by bronzing, and occasionally tip necrosis. Young leaves appeared either symptomless, deformed, or...
Resource Type:: Masters Thesis
Full Text:: professors, Dr. Jack DeAngelis and Dr. Phil Rossignol. Without their encouragement, financial support and

Distribution of Oligonychus (Oligonychus) ununguis (Jacobi) (Acari: Tetranychidae) and predator mite species (Acair: Phytoseiidae) on field-grown Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) Christmas trees

Creator:: Calkin, James D.
Abstract:: The shake and wash technique (samples placed in a jar with alcohol added and shaken to remove the mites) was effective in removing 100% of the predator mites, and adult spruce spider mites from Douglas-fir foliage and 98% of the spruce spider mite nymphs. Eighty-eight percent of the spruce spider...
Resource Type:: Masters Thesis
Full Text:: approved. Redacted for Privacy Abstract approved_ Jack DeAngelis Redacted for Privacy I/Glenn Fisher

Sciarid Fly Control in Commercial Mushrooms

Creator:: DeAngelis, Jack D.
Resource Type:: Conference Proceeding
Full Text:: Other Problems SOARED FLY CONTROL IN COMMERCIAL MUSHROOMS J.D. DeAngelis Department of Entomology

Spruce Spider Mite Control in Douglas-fir Christmas Trees

Creator:: West, Kenneth J. and DeAngelis, Jack
Resource Type:: Conference Proceeding
Full Text:: Trees Ken West and Jack DeAngelis Oregon State University Extension Entomology The sprucespidermite

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

The Biology and Control of the Douglas-fir Needle Midge in Christmas Trees

Creator:: West, Kenneth J., Ruzicka, Angela, and DeAngelis, Jack
Resource Type:: Conference Proceeding
Full Text:: in Christmas Trees Kenneth J. West, Angela Ruzicka and Jack DeAngelis The Douglas-fir needle midge

Biology and control of Douglas-fir needle midge in Christmas trees

Creator:: Oregon State University. Extension Service and DeAngelis, Jack D.
Abstract:: The Douglas-fir needle midge can be a very destructive pest of Douglas-fir. Infestation of new needles can be as high as 100 per-cent. Severe infestations can cause intolerable needle loss, and trees may take several years to recover. Needle loss is an especially serious problem in Christmas trees because of...
Resource Type:: Technical Report
Full Text:: dates will vary year to year. Figure 2.—Adult female midge. Jack D. DeAngelis, Extension entomolo

ScholarsArchive@OSU

Characteristics of Typhlodromus americanus Chant and Yoshida-Shaul (Acari: phytoseiidae) as a biological control agent of Oligonychus ununguis (Jacobi) (Acari: tetranychidae)

Biology and management of a mushroom-infesting sciarid fly (Diptera: Sciaridae) in relation to room-to-room dispersal

Seasonal abundance, distribution, and migration of the clover aphid, Nearctaphis bakeri (Cowen) in red clover

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Distribution of Oligonychus (Oligonychus) ununguis (Jacobi) (Acari: Tetranychidae) and predator mite species (Acair: Phytoseiidae) on field-grown Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) Christmas trees

Sciarid Fly Control in Commercial Mushrooms

Spruce Spider Mite Control in Douglas-fir Christmas Trees

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

The Biology and Control of the Douglas-fir Needle Midge in Christmas Trees

Biology and control of Douglas-fir needle midge in Christmas trees

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