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Filtering by: Committee Member Hess, W. M. Degree Name Master of Agriculture (M.Ag.)

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:

- like growth habit and is commercially produced on a 5 m trellis system, twospotted spider mites
Winter supplementation and delayed weaning of an autumn calving beef herd under western Oregon conditions

Creator:

Buehner, Heidi Renata

Abstract:

Two management systems were evaluated in terms of the effects on cow condition score and body weight changes and calf growth rates. The management systems evaluated were winter supplementation of energy, winter creep feeding and delayed weaning. The calves used in this study were born in September and October of...

Resource Type:

Masters Thesis

Full Text:

members, Drs. D. W. Weber, R. E. Rowe, M. L. Hellickson, J. P. Maas, and P. C. Wagner are thanked for