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Filtering by: Creator Western Orchard Pest and Disease Management Conference Remove constraint Creator: Western Orchard Pest and Disease Management Conference Academic Affiliation Entomology Remove constraint Academic Affiliation: Entomology Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Creator:

Dombrosky, Scott A.

Abstract:

The impact of various factors on seed production in a Douglas-fir (Pseudotsuga menziesii) seed orchard in western Oregon was examined by monitoring the fate of seeds in thirty cones, stratified into three crown levels, on each of ten trees during the 1984 growing season. Cones were examined monthly between April...

Resource Type:

Masters Thesis

Full Text:

populations. Prediction is essential to development of an integrated pest management program for cone and
Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

Creator:

Katundu, Juma

Abstract:

Levels of resistance to six selected insecticides of eleven field populations of the filbert aphid Mvzocallis coryli (Goetze) were determined by using the leaf-dip residue technique. Test insecticides included compounds widely used in commercial filbert orchards, namely, carbaryl, diazinon, endosulfan, phosalone, fenvalerate and oxydemetonmethyl. Aphid samples were collected within a...

Resource Type:

Masters Thesis

Full Text:

levels of insecticide exposure, age and management conditions. The tests were conducted to detect
The biology and seasonality of the parasitiod Trioxys pallidus Haliday in western Oregon

Creator:

Cohn, Judy L.

Abstract:

Seasonal synchrony between the filbert aphid, Myzocallis coryli (Goetze) and its newly introduced parasitoid Trioxys pallidus Haliday was examined in the field to evaluate the effectiveness of parasitoid based biological control in filbert orchards of Oregon. Fieldemergence observations showed that 50% eclosion of the aphid occurred 14 days before that...

Resource Type:

Masters Thesis

Full Text:

a total of 2,645 adult and 1,900 mummy T. pallidus were released in western Oregon filbert orchards
Toxicity of some commonly used pesticides to Trioxys Pallidus and its establishment in filbert orchards of Willamette Valley

Creator:

Saeed, Mohammad

Abstract:

A parasitic wasp, Trioxys pallidus Haliday (Hymenoptera: Aphidiidae) was imported from Europe and initially released against the filbert aphid Mvzocallis coryli (Goetze) in hazelnut (filbert) orchards of the Willamette Valley, Oregon beginning in 1984. In the present study, I investigated the establishment rates of this parasitoid. A total of 13...

Resource Type:

Masters Thesis

Full Text:

growth and adversely affect yields. At present, the Insect Pest Management (IPM) program on filberts
Biology and management of the obliquebanded leafroller, Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae), in sweet cherry

Creator:

Omeg, Michael Kent

Abstract:

The seasonal biology of the obliquebanded leafroller, Choristoneura rosaceana (Harris), was studied to improve its management in Mid-Columbia area sweet cherry orchards. Overwintering OBLR larvae began to emerge from hibernacula at bud stage 2 (side green). Most overwintering larvae emerged from hibernacula within three weeks of first bud swell and...

Resource Type:

Masters Thesis

Full Text:

insect life stages, have been developed and implemented as part of pest monitoring and management
Structure, function, and analysis of Coleoptera and Heteroptera assemblages on two species of hazelnut in Oregon

Creator:

Wetherill, Karen R.

Abstract:

The European hazelnut, Corylus avellana L., was imported into the U.S. in the late 1800's and is now grown throughout the Willamette Valley in Oregon. A native species of hazelnut, C. cornuta Marshall, is a common shrub found in forested areas of the Pacific Northwest. Foliage of both C. avellana...

Resource Type:

Masters Thesis

Full Text:

arthropod abundance and species diversity within functional groups across a forest-edge-orchard gradient. 4
Seasonal distribution, sex attractants, and applied biology of the strawberry crown moth, Synanthedon bibionipennis (Boisduval), in Oregon (Lepidoptera:Sesiidae)

Creator:

Wilmot, Thomas Ray

Resource Type:

Masters Thesis

Full Text:

effective. Pheromones are being used in pest management programs for detecting and monitoring insect
Labops hesperius Uhler : biology and impact of Oregon rangelands (Hemiptera: Miridae)

Creator:

Todd, James Gordon

Abstract:

The seasonal development and habits of Labops hesperius Uhler were studied in rangeland seeded to intermediate wheatgrass (Agropyron intermediurn (Host) Beauv. ) in Baker County, Oregon, The first nymphs appeared on March 22, and required about one week to complete each of the five nymphal stadia. Most small nymphs stayed...

Resource Type:

Masters Thesis

Full Text:

wheatgrass are well suited to rangelands of western North America because of their tolerance of cold and
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:

-I was transmitted to peppermint both mechanically and by western flower thrips, Frankliniella
Arthropod community structure in regenerating Douglas-fir and red alder forests : influences of geography, tree diversity and density

Creator:

Schaerer, Brett L.

Abstract:

The structuring of canopy arthropod communities was reviewed and investigated in relation to tree species diversity and its component factors, interspersion of different species and density of each tree species. Fifteen treatments of Douglas-fir (Pseudotsuga menziesii) and red alder (Alnus rubra) (various densities and proportions of each) were randomly assigned...

Resource Type:

Masters Thesis

Full Text:

Western Oregon: the Cascade Head Experimental Forest and the H. J. Andrews Experimental Forest. The six

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Academic Affiliation

Entomology[remove]25

Advisor

Aliniazee, M. T.6
Berry, Ralph E.4
Deangelis, Jack2
Fisher, James R.2
Schowalter, Timothy D.2
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1966 to 2003

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Committee Member

Fisher, Glenn2
Johnson, Ken2
Rowe, Ken2
Allen, Thomas1
Anderson, Wilbert L.1
more Committee Members »

Creator

Arshad, Muhammad, 1958 1
Bowden, Richard I.1
Calkin, James D.1
Cohn, Judy L.1
Dogan, Elif Barcin1
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Date

Date range begin – Date range end

Current results range from 1966 to 2003

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Decade

2000-20096
1990-19999
1980-19896
1970-19793
1960-19691

Degree Field

Entomology25

Degree Level

Master's25

Degree Name

Master of Science (M.S.)[remove]25

Language

English [eng]25

License

All rights reserved1

Non-Academic Affiliation

Oregon State University. Graduate School25

Peer Reviewed

No25

Resource Type

Masters Thesis25

Rights Statement

Copyright Not Evaluated19
In Copyright6

Subject

Strawberries -- Diseases and pests2
Alfalfa1
Arthropoda -- Oregon -- Composition1
Bacillus thuringiensis1
Bees1
more Subjects »

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