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Seed Treatment with Phorate, Disulfoton, and Other Insecticides to Control Pea Insects in Iraq1

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The onion thrips, Thrips tabaci Lindeman, and the chrysanthemum leaf miner, phytomyza atricornis Meigen, were found to be the most injurious insect pests attacking peas in Abu Ghraib, Iraq. Phorate 10% granules, and disulfoton 5% granules, applied over the seeds in the planting holes at planting dates at the rate of 0.4 lb active ingredient per acre or the treatment of seeds with phorate, either as phorate 44D (44% in charcoal dust) at 4 or 8 lb per 100 lb of dry seeds or as Lc8 (83% emulsifiable concentrate) at the rate of I quart per 150 lb of dry seeds, gave good protection from thrips and leaf miners for more than 2 months. This protection resulted in more vigorous and higher-producing plants. Tests of 10 insecticides sprayed at the rate of 160 to 291 cc active ingredient per acre showed endrin, carbophenothion, endosulfan, and phosphamidon to be effective in controlling the leaf miner. Malathion, dichlorvos, trichlorfon, DDT, carbaryl, and endosan (2s-butyl-4,6-dinitrophenyl 3,3-dimethy1 acrylate) were less effective.

Document Type: Research Article

Publication date: August 1, 1966

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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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