The spruce gall aphid (Adelges Abietis) is an important enemy of Norway spruce in New York nurseries, and nurserymen often sustain serious economic losses due to the ravages of this insect. There are two generations, both of which occur on spruce. No alternate host appears to be involved. Results of some treatments employed in the control of this insect are included. Applications of miscible oils and Bordeaux lubricating oil emulsions have given good control but have been attended in some cases by injury to the trees, which varied directly with the material and the concentrations used. Likewise, promising results have been secured from the use of lime-sulfur, soaps and nicotine. No injury has been observed following applications of these latter materials.
Document Type: Research Article
Publication date: April 1, 1931
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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.