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Filtering by: Date issued sim 1989-08-22 Subject Hazel -- Diseases and pests -- Biological control -- 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