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:: than does N. fallacis. Spatial patterns of dispersal and biological control of pest mites are

Factors affecting the susceptibility of bean plants to inoculation with bean yellow mosaic virus

Creator:: Sohi, Sardara Singh
Resource Type:: Masters Thesis
Full Text:: ReLattve auaceptlblllty of bean vsrt- ettes te BYHII by meohantoal lnsoul,a- tlsn and ts lnoculatton by

Resistance in snap beans, Phaseolus vulgaris L., to adult western spotted cucumber beetle, Diabrotica u. indecimpunctata Mann

Creator:: Eltoum, Elameen M. A.
Abstract:: Studies to evaluate resistance in snap beans, Phaseolus vulgaris L. to adult western spotted cucumber beetles, Diabrotica u. undecimpunctata Mann. were conducted in greenhouse cages, field cages, field plots, and in temperature controlled cabinet in the laboratory. Results showed that there were differences in susceptibility to adult feeding injury between...
Resource Type:: Masters Thesis
Full Text:: pests in California, and it is a common pest in the Willamette Valley of Western Oregon (Rockwood and

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

Creator:: Weinzierl, Richard Alan
Resource Type:: Dissertation
Full Text:: general information concerning four topics: snap bean production, WSCB biology and pest status, sampling

Sampling methods, biology and management of the mint flea beetle in central Oregon peppermint

Creator:: Morris, Mark A.
Abstract:: Sampling techniques were evaluated to quantify immature mint flea beetle (MFB), Longitrsus waterhousei Kutschera (Coleoptera: Chrysomelidae), on peppermint (Mentha piperita L.), in central Oregon. During the study period, 1985-1988, soil samples of 350 cm³ were effective for collecting immature MFB. Sifting soil samples through screens was effective for estimating post-feeding...
Resource Type:: Masters Thesis
Full Text:: the detection, biology and control of immature MFB in peppermint in central Oregon. The following

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:: major pest of sweet cherries grown in the Mid-Columbia area of northern Oregon (Long and Omeg 1994

The transmission of bean yellow mosaic virus by some strains of the aphid Myzus persicae (Sulzer)

Creator:: Carpenter, Gene Paul
Resource Type:: Masters Thesis
Full Text:: LITERATURE While working with the leafhopper, Cicadulina mbila Naude, and the streak disease of maize

The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

Creator:: Booth, Steven R.
Abstract:: This thesis addressed the potential of endemic predaceous and parasitic arthropods of the Hood River Valley, Oregon to suppress the pear psylla, Cacopsylla pyricola F8rster. Natural enemies adequately suppressed psylla in three of seven unsprayed orchards of differing vegetational settings, orchard age, and size. Relatively few psylla natural enemies dispersed...
Resource Type:: Dissertation
Full Text:: russetted pears under standard and selective pest control programs during harvest at Quince, 1987-89. Total

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:: effective insect control programs in commercial filbert orchards of the Willamette Valley, Oregon

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:: parasitoid based biological control in filbert orchards of Oregon. Field- emergence observations showed

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

Factors affecting the susceptibility of bean plants to inoculation with bean yellow mosaic virus

Resistance in snap beans, Phaseolus vulgaris L., to adult western spotted cucumber beetle, Diabrotica u. indecimpunctata Mann

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

Sampling methods, biology and management of the mint flea beetle in central Oregon peppermint

Biology and management of the obliquebanded leafroller, Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae), in sweet cherry

The transmission of bean yellow mosaic virus by some strains of the aphid Myzus persicae (Sulzer)

The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

The biology and seasonality of the parasitiod Trioxys pallidus Haliday in western Oregon

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