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

Authors: VARN, M.; PFEIFFER, D. G.

Source: Journal of Economic Entomology, Volume 82, Number 2, April 1989 , pp. 565-569(5)

Publisher: Entomological Society of America

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Abstract:

One-year-old apple trees grown in pots were artificially infested with either Dysaphis plantaginea (Passerini) or Aphis spiraecola Patch Feeding by D. plantaginea on 22-53% of the leaves on the tree significantly reduced accumulation of dry weight in all portions of the trees during the first season's growth. At the l0-leaf stage of the second season, dry weights of trees infested with D. plantaginea during the previous year were still significantly lower than those of control trees. A. spiraecola did not reduce the accumulation of dry weight by the young trees.

Document Type: Research article

Publication date: 1989-04-01

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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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