Index Catalog // ScholarsArchive@OSU

Phenology, Host-Plant Resistance, and Biological Control of Stephanitis pyrioides in Oregon

Creator:: Flores, Salvador M.
Abstract:: The azalea lace bug (Stephanitis pyrioides Scott) is a recently detected invasive pest to the Pacific Northwest and has become a major concern in Oregon. It feeds on azaleas as well as rhododendrons causing stippling on the top side of leaves. The damage is aesthetically displeasing and affects plant vigor...
Resource Type:: Masters Thesis
Full Text:: . Title: Phenology, Host-Plant Resistance, and Biological Control of Stephanitis pyrioides in Oregon

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:: immatures and their natural enemies 64 Psylla russet damage 68 Incidence of pear psylla biological control

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

Biological control of spider mites (Acari: Tetranychidae) on grape emphasizing regional aspects

Creator:: Prischmann, Deirdre A.
Abstract:: During summer of 1998 and 1999, 34 and 10 vineyard sites, respectively, were sampled to assess spider mite pests and associated biological control by phytoseiid mites. Vineyards studied spanned five major valleys in western Oregon where grape production occurs. Leaf samples were taken from site perimeters and centers. One leaf...
Resource Type:: Masters Thesis
Full Text:: assess spider mite pests and associated biological control by phytoseiid mites. Vineyards studied

Conservation of arthropod natural enemies in broccoli with relay strip-cropping

Creator:: McGrath, Daniel M. (Daniel Morton)
Abstract:: Relay strip-cropping combines two vegetation management tactics, under-sowing and strip-management. In this study conducted from 1994 though 1997, a cover crop seed-mixture containing oats (Avena sativa L. var. "Monida"), common vetch (Vicia sativa L.), red clover (Trifolium pratense L.), annual ryegrass (Lolium multflorum Lam.), and buckwheat (Fagopyrum esculentum Moench) was...
Resource Type:: Dissertation
Full Text:: Broccoli Relay - Corvallis, Oregon 1996 3.1 Spider and Harvestmen Families in a Broccoli Cover Crop Relay

Predators of hemlock woolly adelgid in northwestern Oregon

Creator:: Byrkit, Maggie K.
Abstract:: Hemlock woolly adelgid, Adelges tsugae Annand, is a serious threat to eastern hemlock, Tsuga canadensis Carriere, in the eastern United States. Infestations of A. tsugae are spreading rapidly and tree mortality caused by the insect is increasing yearly. As part of an integrated management approach, a classical biological control program...
Resource Type:: Masters Thesis
Full Text:: . Importation and release of exotic enemies has been repeatedly used as a means of biological control of pest

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:: greenhouse facilities and getting me interested in the basic and applied aspects of biological control

Habitat management for beneficial insects on Willamette Valley vegetable and berry farms

Creator:: Russell, Michael C.
Abstract:: Conservation biological control involves manipulating farm landscapes or management systems to enhance populations of beneficial predators of agricultural pests. Farmscaping is one aspect of conservation biological control where predators of important pests are identified, the availability on the farm landscape of resources and habitat components needed by the beneficials to...
Resource Type:: Dissertation
Full Text:: taxa also support a clear relationship between plant diversity and the biological control of pests

Enhancing the predatory potential of hoverflies on aphids in Oregon broccoli fields with floral resources

Creator:: Ambrosino, Mario D.
Abstract:: Four key aspects of the relationship between predatory hoverflies and the aphid pest Brevicoryne brassicae L. on broccoli were investigated in the Willamette Valley, Oregon USA: 1) the relationship between aphid density and hoverfly oviposition, 2) the larval voracity of key hoverfly species, 3) the preferences of hoverflies and broccoli...
Resource Type:: Dissertation
Full Text:: hoverflies, and the degree to which they respond to management and conservation biological control tactics

Evaluating compatibility of horticultural oils and sulfur with vineyard IPM

Creator:: Gadino, Angela Noelle, Walton, Vaughn M., Dreves, Amy J., Jones, Gregory V., Brewer, Linda J., and Oregon State University. Extension Service
Abstract:: Typhlodromus pyri (T. pyri) is a beneficial insect and key predator of Calepitrimerus vitis (C. vitis) in Pacific Coast vineyards. C. vitis is closely associated with short-shoot syndrome. The impact of horticultural (paraffinic) oils and sulfur on T. pyri is presented here. This publication contributes to integrated pest management and...
Resource Type:: Technical Report
Full Text:: diseases and pest insects and mites. They are often used in vineyards to control grape powdery mildew, in

ScholarsArchive@OSU

Phenology, Host-Plant Resistance, and Biological Control of Stephanitis pyrioides in Oregon

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

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

Biological control of spider mites (Acari: Tetranychidae) on grape emphasizing regional aspects

Conservation of arthropod natural enemies in broccoli with relay strip-cropping

Predators of hemlock woolly adelgid in northwestern Oregon

Toxicity of some commonly used pesticides to Trioxys Pallidus and its establishment in filbert orchards of Willamette Valley

Habitat management for beneficial insects on Willamette Valley vegetable and berry farms

Enhancing the predatory potential of hoverflies on aphids in Oregon broccoli fields with floral resources

Evaluating compatibility of horticultural oils and sulfur with vineyard IPM

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