Economic injury level, action threshold and population development of the pea aphid, Acyrthosiphon pisum (Harris) (Homoptera:Aphididae), on green peas, Pisum sativum L.
By: by George Craig Yencho.
Published: 1985
Language: eng
Number of pages: 43
Subjects: Pea aphid.; Peas -- Diseases and pests.
Notes: Typescript.

Thesis (M.S.)--Washington State University, 1985.

Bibliography: leaves 41-43.

WSU:"Department of Entomology."