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Filtering by: Advisor Ritcher, Paul O. Subject Barley -- Diseases and pests

Biology studies of Macrosiphum avenae (Fabr.), Acyrthosiphon dirhodum (Walker), and Rhopalosiphum padi (L.) on Gramineae in western Oregon

Creator:

Greene, Gerald L.

Abstract:

Field biology studies of three grain aphids, Macrosiphum avenae (Fabr.), Acyrthosiphon dirhodum (Walker), and Rhopalosiphum padi (L.) were conducted near Corvallis, Oregon, from 1961 to 1964. Populations of M. avenae were found on grain plants, and alatae entering spring barley may have been from wheat fields. Specimens were found more...

Resource Type:

Dissertation

Full Text:

. Paul O. Ritcher who arranged my research assist- antship and was very helpful during the degree work