A multi-year field study was conducted in Oregon and Washington to evaluate the influence of nitrogen fertilization rate and timing on cone quality, nitrate accumulation in cones, severity of powdery mildew (caused by Podosphaera macularis), arthropod pests, and the stability of conservation biological control of the twospotted spider mite (Tetranychus...
Proceedings of the 71st Annual Western Orchard Pest and Disease Management Conference, held January 8-10, 1997 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 67th Annual Western Orchard Pest and Disease Management Conference, held January 13-15, 1993 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 66th Annual Western Orchard Pest and Disease Management Conference, held January 8-10, 1992 at the Imperial Hotel in Portland, Oregon.
Drosophila suzukii (Diptera: Drosophilidae) is an insect of global concern that causes serious damage to soft-skinned fruits. D. suzukii is widespread in North America, South America, Europe, and Asia and is listed as an invasive pest with strict quarantine protocols governing import and export. Given the damage caused by D....
This laboratory bioassay focused on lethal and sublethal effects of five
insecticides (chlorantraniliprole, cyantraniliprole, spinetoram, novaluron, and lambda-cyhalothrin) and two fungicide treatments (sulfur and a mixture of copper hydroxide and
mancozeb) on the predatory mired bug Deraeocoris brevis (Uhler) (Hemiptera: Miridae) using
second instars and adult males and females. Formulated...
The predatory mite Typhlodromus pyri (Acari: Phytoseiidae) is the predominant species in cool climate Pacific Northwest vineyards and a principal predator of pest mites including the grapevine rust mite Calepitrimerus vitis (Acari: Eriophyidae). In recent years vineyards have been experiencing C. vitis population outbreaks leading to increased economic damage from...