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Filtering by: Advisor Day, E. A. Advisor Dickason, E. A. Subject Alfalfa -- Disease and pest resistance

The parasite complex of the pea aphid, Acyrthosiphon pisum (Harris) on alfalfa in western Oregon

Creator:

Dickie, Alfred Gordon

Abstract:

This study was initiated in the Spring of 1966 for the purpose of determining the present status and effectiveness of imported parasitic wasps of the pea aphid in the Willamette Valley of western Oregon. The pea aphid is a serious pest throughout the pea and alfalfa growing regions of the...

Resource Type:

Masters Thesis

Full Text:

/- Redacted for PrivacyAbstract approved: E. A. Dickason This study was initiated in the Spring of 1966 for