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AN INTEGRATED PEST MANAGEMENT PROGRAM FOR APPLE ORCHARDS IN SOUTHWESTERN QUEBEC1,2

Published online by Cambridge University Press:  31 May 2012

N.J. Bostanian  and
L.J. Coulombe
N.J. Bostanian
Affiliation:
Agriculture Canada Research Station, PO Box 457, St-Jean-sur-Richelieu, Quebec, Canada J3B 6Z8
L.J. Coulombe
Affiliation:
Agriculture Canada Research Station, PO Box 457, St-Jean-sur-Richelieu, Quebec, Canada J3B 6Z8
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Abstract

An IPM program was developed to control Venturia inaequalis (Cke.) Wint., Lygus lineolaris (Palisot de Beaiivois), Conotrachelus nenuphar (Herbst), and Rhagoletis pomonella (Walsh), the annual key pests of apple orchards in southwestern Quebec. The program was found to control other pests, such as Orthosia hibisci (Guenée). Phytophagous tetranychids were controlled with the introduction of an organophosphate-resistant strain of Amblyseius fallacis Garman, Key pests were monitored carefully and pesticide applications were timed to correspond to their presence in the orchard. After an extremely severe winter and late spring frosts, the IPM program failed to provide commercially acceptable pest control. A measure to correct this problem is suggested in the text. This program reduced the cost of pesticide treatments by 34% when compared with pest control practices currently used by commercial growers in Quebec.

Résumé

Un programme de lutte intégrée a été mis au point pour réprimer Venturia inaequalis (Cke.) Wint., Lygus lineolaris (Palisot de Beauvois), Conotrachelus nenuphar (Herbst) et Rhagoletis pomonella, les principaux ravageurs du pommier dans le sud-ouest du Québec. Le programme de lutte intégrée a permis de réprimer également d’autres ravageurs tels qu’Orthosia hibisci (Guenée). Les tétranyques phytophages ont été réprimés par l’introduction d’une lignée résistante-organophosphate Amblyseius fallacis Garman. Les principaux ravageurs ont été suivis avec soin et des applications de pesticides ont été faites lorsqu’il y avait infection de la maladie et des populations suffisantes d’insectes. Après un hiver extrêmement rigoureux et des gelées tardives au printemps, le programme de lutte intégrée n’a pas permis un niveau de répression des ravageurs qui soit acceptable du point de vue commercial. Une suggestion pour corriger ce problème est énoncée dans le texte. Ce programme a permis une réduction des coûts de traitement de 34% par rapport au programme de lutte couramment suivi par les producteurs commerciaux au Québec.

Type
Articles
Information
The Canadian Entomologist , Volume 118 , Issue 11 , November 1986 , pp. 1131 - 1142
Copyright
Copyright © Entomological Society of Canada 1986

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