Effect of Rosy Apple Aphid and Spirea Aphid (Homoptera: Aphididae) on Dry Matter Accumulation and Carbohydrate Concentration in Young Apple Trees

Author: VARN M.   PFEIFFER D. G.  

Publisher: Entomological Society of America

ISSN: 1938-291X

Source: Journal of Economic Entomology, Vol.82, Iss.2, 1989-04, pp. : 565-569

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