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TIMING SPRAYS FOR CODLING MOTH (LEPIDOPTERA: OLETHREUTIDAE) CONTROL ON APPLE

Published online by Cambridge University Press:  31 May 2012

Elmer A. C. Hagley
Elmer A. C. Hagley
Affiliation:
Research Station, Canada Department of Agriculture, Vineland Station, Ontario
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Abstract

Effective codling moth control was obtained by timing the application of insecticidesito coincide with the period of greatest larval emergence in the orchard. This occurred 6–10 days after first emergence and the latter could be predicted by heat unit summations. In 1971 and 1972 144 and 137 degree-days accumulated from the date on which the first male moth was taken in pheromone traps and the first larvae emerged, respectively.

Type
Articles
Information
The Canadian Entomologist , Volume 105 , Issue 8 , August 1973 , pp. 1085 - 1089
Copyright
Copyright © Entomological Society of Canada 1973

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