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CODLING MOTH POPULATIONS UNDER NATURAL, INTEGRATED, AND CHEMICAL CONTROL ON APPLE IN NOVA SCOTIA (LEPIDOPTERA: OLETHREUTIDAE)1

Published online by Cambridge University Press:  31 May 2012

C. R. MacLellan
C. R. MacLellan
Affiliation:
Research Station, Canada Department of Agriculture, Kentville, Nova Scotia
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Abstract

Codling moth populations on natural apple fruit trees scattered throughout Nova Scotia are compared with those in commercial orchards. In natural fruit, failure of crop, crop size, degree of isolation, amount of crowding by native trees, and natural enemies determine the level of codling moth numbers. Young commercial orchards require artificial control measures within a few years of first bearing fruit to prevent severe crop losses. In older commercial orchards natural controls require an occasional assist by chemical treatment to contain the codling moth below economically tolerable levels. Such treatment is applied to interfere as little as possible with known natural controls.

Type
Articles
Information
The Canadian Entomologist , Volume 104 , Issue 9 , September 1972 , pp. 1397 - 1404
Copyright
Copyright © Entomological Society of Canada 1972

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