Index Catalog // ScholarsArchive@OSU

Visual and olfactory responses of the horn fly, Haematobia irritans (Linn.)

Creator:: Hargett, Louie Thomas, 1932-
Resource Type:: Dissertation
Full Text:: with a second peak being reached at 640 mu . Similar results were obtained from male and female

Varietal resisitance of hops, Humulus lupulus (Linn.), to the two-spotted spider mite, Tetranychus urticae (Koch)

Creator:: Mayberry, Terrel Wilson
Abstract:: The purpose of this study was to determine the relative resistance of genetic lines of hops, Humulus lupulus (Linn.) to the two-spotted spider mite, Tetranychus urticae (Koch) in western Oregon. Approximately three-hundred genetic lines of hops were screened under insectory conditions during the 1965 growing season at Corvallis, Oregon. Reduction...
Resource Type:: Masters Thesis

Use of petroleum oils to prevent spread of stylet-borne viruses by aphids

Creator:: Ascerno, Mark E.
Abstract:: The use of petroleum oil prevented, to varying degrees: the transmission of three stylet-borne viruses in three different crops. The use of oils resulted in a marked improvement in the number of lily bulbs harvested from treated plots as compared to the number of lily bulbs harvested from untreated plots....
Resource Type:: Masters Thesis

Use of a geographical information system to modify pheromone trap-based predictions of Helicoverpa zea (Boddie) damage

Creator:: Drapek, Raymond James
Abstract:: The GRASS (V. 4.0) geographical information system (GIS) was used to test the hypothesis that pheromone trap based predictions of Helicoverpa zea (Boddie) damage in processed sweet corn could be improved by considering spatial patterns of corn plantings and wind blocking features around the trap. Wind blocking features include: tree...
Resource Type:: Dissertation
Full Text:: in College Station, Texas 19 days before emergence of over wintering pupae from diapause. They

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

Thelytokous and dioecious populations of Phenacaspis pinifoliae (Fitch), (Homoptera : Diaspididae)

Creator:: Stimmann, Michael W.
Abstract:: Two populations of the pine needle scale, Phenacaspis pinifoliae (Fitch), were studied. One population was located in Corvallis, Oregon, and the other population was located near Santiam Pass, Oregon. Both populations were feeding on Pinus contorta. The Corvallis population was unisexual, univoltine, and over wintered as both eggs and adult...
Resource Type:: Masters Thesis
Full Text:: scale insects found in North America. New York Agricultural Experiment Station (Cornell). Dept. of

The taxonomic value of the external female genitalia in the genus Nabis Latreille (Hemiptera: Heteroptera: Nabidae)

Creator:: Mitri, Talaat Khairi
Resource Type:: Masters Thesis
Full Text:: College ]'ield Station, Seiwood Fark, Sunninghili, Berks, England; Dr. G. G. E. Scudder, Departm.nt of

The Tabanidae (Diptera) of Oregon

Creator:: Mahmoud, Ali Ahmed
Abstract:: Fifty species and subspecies and six varieties in eight genera of the family Tabanidae are recognized from Oregon. The following genera are represented in Oregon: Apatolestes Williston, Pilimas Brennan, Stonemyia Brennan, Silvius Meigen, Chrysops Meigen, Atylotus Osten Sacken, Hybomitra Enderlein and Tabanus Linnaeus. Adults and larvae were collected from various...
Resource Type:: Dissertation
Full Text:: , Crater Lake (Klamath County), Malheur Experimental Station (Harney County), Government Camp and other

The speed of toxic action of new insecticides on pea aphid (Macrosiphum pisi (Kalt.) compared with nicotine sulfate

Creator:: Chang, Shen Chin
Resource Type:: Masters Thesis

The species of root-weevils attacking strawberry with especial reference to their life history, habits and control in Oregon

Creator:: Wilcox, Joseph, 1901-1982
Resource Type:: Masters Thesis
Full Text:: arnounced that tt'e Washington Experirent Station was to soon issue a bulletin on the control of these

ScholarsArchive@OSU

Visual and olfactory responses of the horn fly, Haematobia irritans (Linn.)

Varietal resisitance of hops, Humulus lupulus (Linn.), to the two-spotted spider mite, Tetranychus urticae (Koch)

Use of petroleum oils to prevent spread of stylet-borne viruses by aphids

Use of a geographical information system to modify pheromone trap-based predictions of Helicoverpa zea (Boddie) damage

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

Thelytokous and dioecious populations of Phenacaspis pinifoliae (Fitch), (Homoptera : Diaspididae)

The taxonomic value of the external female genitalia in the genus Nabis Latreille (Hemiptera: Heteroptera: Nabidae)

The Tabanidae (Diptera) of Oregon

The speed of toxic action of new insecticides on pea aphid (Macrosiphum pisi (Kalt.) compared with nicotine sulfate

The species of root-weevils attacking strawberry with especial reference to their life history, habits and control in Oregon

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