Insecticidal Seed Dressings on Drill-Seeded Rice to Control the Rice Water Weevil1,2

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When 48 insecticides were field tested in Louisiana as seed dressings on drill-seeded rice to control Lissorhoptrus ryzophilus Kuschel, 9 of 15 carbamates, 9 of 28 organophosphates, and 2 of 5 miscellaneous compounds significantly reduced the number of rice water weevil larvae at one or more of the test rates. However, 3 carbamates, 9 organophosphates, and 3 miscellaneous materials reduced the stand of rice significantly, and all carbamates and miscellaneous materials that controlled the rice water weevil interacted with the herbicide propanil to cause undesirable seedling leaf burn. Cblorpyrifos and Plant Protection PP-211 (0-[2- (diethylamino) -6-methyl-4-pyrimidinyl] O,O-diethyl phosphorothioate) were the only materials that prodded significant larval control and did not reduce stand or interact with propanil to cause seedling leaf bum.

Document Type: Research Article

Publication date: October 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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