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Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

Creator:

Dreves, Amy J.

Abstract:

In Oregon’s northern Willamette Valley, cabbage maggot (CM), Delia radicum (L.) (Diptera: Anthomyiidae) often renders Brassica root crops unmarketable. Scheduled insecticides are the only current control. Studies were conducted to: 1) describe and characterize spring emergence of CM flies and their seasonal flight activity relative to degree-day (DD) accumulations; 2)...

Resource Type:

Dissertation

Full Text:

this doctorate possible. First to my advisor, Dr. Glenn Fisher, for his support, encouragement
Tactics for enhancing conservation biological control of twospotted spider mites, Tetranychus urticae Koch, in Pacific Northwest hop yards

Creator:

Woods, Joanna L.

Abstract:

The twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is a worldwide pest of numerous agronomic and horticultural plants. Conservation biological control of this pest can be unreliable due to asynchrony of natural enemies and certain horticultural practices that have a direct or indirect affect on natural enemies and the...

Resource Type:

Masters Thesis

Full Text:

: _____________________________________________________________________ Glenn C. Fisher The twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae