Japanese Beetles: Extracts from Neem Tree Seeds as Feeding Deterrents

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In both laboratory and field tests over a 3-yr period, solvent extracts from seeds of the neem tree, Azadirachta indica A. Juss., successfully deterred Popillia japonica Newman from feeding on sassafras leaves, Sassafras albidum (Nutt.), and soybeans, Glycine max (L.). In most instances, untreated foliage was completely destroyed, whereas leaves protected with the neem extracts remained untouched or, at worst, were only slightly damaged.

Document Type: Research Article

Publication date: October 15, 1978

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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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