Control of Wireworms1 on Potatoes in Eastern Washington by Soil Fumigants and Organophosphorous Insecticides2, 3

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Soil fumigation with Telone® (mixed dichloropropenes), DD® Mixture (dichloropropanc-dichloropropene mixture), and ethylene dibromide, applied at 20 gal, 25 gal, and 36 lb/acre, respectively. and broadcast applications of granulated diazinon, parathion, and phorate, applied at 2, 4, and 11Ill/acre, respectively, gave economic control of the Pacific Coast wireworm (Limonius canus LeConte) on potatoes in sandy loam soil. Cullage was reduced 93.6- 100%. Granulated disulfoton. broadcast at 3 Ib/acre, gave significantly less control than other broadcast treatments.

Post-planting side dressings of granulated parathion, phorate, Stauffer N-2790 (O-ethyl S-phenyl ethylphosphonodithioate), and Bayer 25141 [O-O-diethyl O-p- (methylsulrll1yl)phenyl phosphorothioate), applied at 3 lb/acre, reduced cullage 74.4-85.2%. Granulated disulfoton and Bayer 37289 (O-ethyl 0-2,4,5-trichlorophenyl ethylphosphonothioate) at 3 Ib and naphthalene crystals at 450 lb/ acre were significantly inferior to the other sidedress treatments. Phorate and disulfoton granules gave as good control when metered onto the soil surface in bands 6 in, wide in the furrow left by the press-wheel potato planter as when side dressed in the soil at the same rate. Of all diazinon, disulfoton, parathion, and phorate treatments, only phorate applied in the planter press-wheel furrow left a detectable residue above the tolerance in tubers collected 3 weeks before harvest.

Document Type: Research Article

Publication date: April 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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