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Reactions of the Rice Weevil to Newly Developed Wheat Products

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Abstract:

Studies were conducted with 5 promising wheat products developed by the Western Utilization Research and Development Division, USDA, to evaluate attractiveness or resistance to Sitophilus oryzae (L.). The weevils were attracted consistently to pearled wheats of both light and heavy abrasion and were able to develop heavy populations therein. Parboiled WURLD wheats neutralized with either acetic or benzoic acid were not attractive to rice weevils. However, small numbers of progeny were produced in both materials. Progeny emergence was several days later in these than in the pearled wheats. More progeny was produced in scarified WURLD wheat than in the acid-neutralized products, but the number of progeny was still much lower than in the pearled wheats. Rice weevils were attracted to the Gaines wheat control about the same as to the pearled wheats, and progeny production was about the same in these materials. The bulgur and flour controls were the least attractive of all test materials to the rice weevil. However, the progeny production from the bulgur was similar to that from the acetic-add-neutralized WURLD wheat.

Document Type: Research Article

Publication date: April 16, 1973

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.
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