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Filtering by: Subject Wildlife pests -- Control -- Oregon Advisor Aliniazee, M. T.

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
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:

DISCUSSION .105 Integrated Pest Management 105 Natural Biological Control 106 Refugia 108 Edge Effects
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:

treatments. Most of the filbert growers of Oregon use pesticides to control filbert aphid. These treatments