Hydrogen Phosphide and Ethyl Formate: Fumigation of Insects Infesting Dates and Other Dried Fruits1

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The relative toxicity of hydrogen phosphide was determined for the life stages of Carpophilus mutilatus Erichson; the driedfruit beetle, C. hemipterus (L.); the pincapple beetle, Urophorus humeralis (F.); the yellowish nitidulid. Haptoncus luteolus (Erichson); the saw-toothed grain beetle, Oryzaephilus surinamensis (L.); the Indian meal moth. Plodia interpunctella (Hubner); And the raisin moth, Cadra figulilella (Gregson). The relative toxicity of ethyl formate was determined for the life stages of C. hemipterus. O. surinamensis, C. figulilella, and P. interpunctella. In general, with hydrogen Phosphide the egg stage of each species was the most difficult to kill, followed by the pupal sage, while the larval and adult stages were the most susceptible. The pupal stage was the most resistant to ethyl formate fumigation, whereas the adult stage was the most susceptible. With the exception of the driedfruit beetle, the egg stage was more susceptible than the larval stage to ethyl formate fumigation.

Document Type: Research Article

Publication date: December 1, 1972

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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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