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Evaluation of New Materials for Codling Moth Control in Washington1

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Field studies were conducted during 1958, 1959and 1960 to determine the effectiveness of several insecticides for the control of codling moth (Carpocapsa pomonella (L.)) in apple orchards which had had a high percentage of wormy fruit during the previous year.

Sevin® (1-naphthyl N-methylcarbamate) at 1 pound of 50% wettable powder per 100 gallons of water or Guthion® (O,O- dimethyl S-4-oxo-1,2,3-benzotriazin-3-(4H)-ylmethyl phosphorodithioate) ar 0.75 pound gave excellent codling moth control. At a dosage of 1.5 pounds per 100 gallons of water both of these materials provided good control when the interval between sprays was extended from 21 to 28 days. Ethyl Guthion® (O,O- diethyl S-4-oxo-l,2,3-benzotriazin-8(4H)-ylmethyl phosphorodithioate) and Diazinon® (O,O-diethyl O-(2 isopropyl-6-methyl- 4-pyrimidyl) thiophosphate) were not consistently as effective as Sevin or Guthion. Control with ethion was good in 1958 and 1959 but was poor during 1960. Trithion® (S-(p-chlorophenylthio methyl)O,O-diethyl phosphorodithioate) gave good control but was phytotoxic to apples. Other materials which showed considerable promise for codling moth control were dimethoate, phosphamidon, Bayer 29493 (O,O-dimethyl O-[4-(methylthio)-m-tolyl] phosphorothioate), and Bayer 22408 (Naphthaloximido- O,O-diethyl phosphorothioate).

The materials which did not provide adequate control with Ryania (ground stems of Ryania speciosa), were: Dilan (2-nitro 1,1-bis(p-chlorophenyl)propane and butane mixture (1: 2 ratio)), Kepone® (decachlorooctahydro-1,3,4-metheno-2H -cyclobuta [cd] pentalen-2-one), and DDT. The addition of either parathion or malathion to DDT resulted in good control.

Document Type: Research Article

Publication date: December 1, 1961

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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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