Dichlorvos and Plastic Covers Affect Insects Infesting Stored Cocoa Beans in Dockside Warehouses
Authors: Bullington, Stephen W.; Pienkowski, Robert L.
Source: Journal of Economic Entomology, Volume 86, Number 4, August 1993 , pp. 1151-1156(6)
Publisher: Entomological Society of America
Abstract:Stored cocoa beans (Theobroma cacao L.) were sampled from dockside warehouses in Norfolk, VA, to determine the effect on insect populations of using covers of plastic sheeting to contain dichlorvos in an open warehouse versus the use of the chemical in a closed warehouse, as a control measure; the correlation of insect populations with bean moisture content, relative humidity, and temperature within bags of cocoa beans; and what species of insects inhabited the cocoa beans. Most insects in the samples were Coleoptera, but Psocoptera were also numerous. Most Coleoptera were Ahasverus advena (Waltl) and Cryptolestes ferrugineusl (Stephens). Treatments of cocoa beans covered with plastic sheeting had significantly higher numbers of beetles and a significantly higher bean moisture content than treatments left uncovered. Among covered treatments, beans treated with dichlorvos had a significantly lower moisture content near the end of the test.
Document Type: Research Article
Publication date: August 1, 1993
- 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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