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Filtering by: Committee Member Miller, J. C.

Evaluation of nutritional qualities of common ryegrass screenings

Creator:

Snyder, Fred Roland

Abstract:

This study was conducted to investigate the production and processing technology of common ryegrass screenings and to determine the nutritive value of these screenings for sheep. The animal response to them was assessed when the sheep were fed on the screenings alone and in combination with other feedstuffs. Four in...

Resource Type:

Dissertation
Classical biological control of the filbert aphid, Myzocallis coryli (Goetze) (Homoptera:Aphididae) in western Oregon

Creator:

Messing, Russell H.

Abstract:

A classical biological control project was undertaken against the filbert aphid, Myzocallis coryli (Goetze), in western Oregon. Hazelnut orchards in Spain, France, and Italy were searched for natural enemies of the aphid, and a parasitic wasp, Trioxys pallidus Haliday, was imported, quarantined, mass-reared, and released in Oregon orchards. The wasp...

Resource Type:

Dissertation