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Extraction from Foliage and Within-Plant Distribution for Sampling of Brachycolus asparagi (Homoptera: Aphididae) on Asparagus

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Abstract:

Methods for extracting Brachycolus asparagi Mordvilko from asparagus, Asparagus officinalis L., foliage and the distribution of the aphid on the plant were studied to increase sampling efficiency. Aphids were efficiently extracted by methyl isobutyl ketone and Berlese-Tullgren funnels, but not by beating. Aphids had a clumped distribution and numbers decreased with increasing height on the plant. Sampling efficiency was optimized by sampling the lower secondary branches on the plant. The advantage of using Taylor's power law over the mean crowding index to determine the optimum number of samples is discussed.

Document Type: Research Article

Publication date: August 1, 1983

More about this publication?
  • 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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