If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email firstname.lastname@example.org
Experiments showed that 5% granular heptachlor applied within a 2-foot radius of tree bases by portable power duster was highly effective in controlling Pissodes strobi (Peck) in plantations of eastern white pine, Pinus strobus L. Applications provided adequate control of the overwintering adults for at least 5 years. The timing of treatments had little effect on the control obtained. The greatest weeviling reduction, averaging 95%, occurred in the 2nd year after treatment. A measure of control was obtained also in plantings where only the weeviled tree and those immediately adjacent received treatment. In nearby areas where tree leaders were treated with a DDT emulsion, initial adult mortality was higher, but repopulation soon occurred. Efforts directed at controlling hibernating adult weevils in the duff at the tree base will overcome the numerous problems existing in current leader treatment methods.
Document Type: Research Article
Publication date: December 16, 1968
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.