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A STRAIN OF FRUITTREE LEAFROLLER, ARCHIPS ARGYROSPILUS (LEPIDOPTERA: TORTRICIDAE), TOLERANT TO AZINPHOS-METHYL IN AN APPLE ORCHARD REGION OF THE OKANAGAN VALLEY OF BRITISH COLUMBIA1

Published online by Cambridge University Press:  31 May 2012

J. M. Vakenti ,
C. J. Campbell  and
H. F. Madsen
J. M. Vakenti
Affiliation:
Research Station, Agriculture Canada, Summerland, British Columbia V0H 1Z0
C. J. Campbell
Affiliation:
Research Station, Agriculture Canada, Summerland, British Columbia V0H 1Z0
H. F. Madsen
Affiliation:
Research Station, Agriculture Canada, Summerland, British Columbia V0H 1Z0
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Abstract

Probit analysis of the dosage response of first instar, fruittree leafroller larvae to azinphos-methyl indicated that a strain from a commercial orchard in East Kelowna, B.C. was 7.8 times more tolerant than a susceptible strain. Azinphos-methyl applied to experimental apple blocks in the same area did not provide satisfactory control. Leafroller damage as high as 10.5% was found in several orchards which had received multiple azinphos-methyl and other organophosphorous insecticide treatments. The development of an organophosphorous resistant strain of fruittree leafroller in this orchard area is strongly suggested. Bacillus thuringiensis applied at the pink stage of apple blossom development gave adequate control of fruittree leafroller in East Kelowna field trials and will be suggested as the control material for commercial orchards in this area.

Résumé

L'analyse probit de la réaction du premier stade larvaire de la tordeuse du pommier au dosage d'azinphos-méthyl indique qu'une lignée d'un verger commercial de East Kelowna (Colombie-Britannique) est 7.8 fois plus tolérante qu'une lignée sensible. L'application de l'insecticide à des blocs expérimentaux dans le même secteur ne donne pas de résultats satisfaisants. On observe jusqu'à 10.5% de dégâts dans plusieurs ver-gers ayant reçu de multiples traitements d'azinphos-méthyl et d'autres insecticides organophosphorés. L'étude laisse supposer l'apparition d'une lignée résistante aux organophosphorés dans ce secteur arboricole. L'application de Bacillus thuringiensis au stade du bouton rose s'avère efficace contre le ravageur dans les essais de terrain effectués à East Kelowna et sera proposée comme moyen de lutte pour les vergers commerciaux de ce secteur.

Type
Articles
Information
The Canadian Entomologist , Volume 116 , Issue 1 , January 1984 , pp. 69 - 73
Copyright
Copyright © Entomological Society of Canada 1984

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References

Finney, D. J. 1971. Probit Analysis. 3rd ed. Cambridge University Press.Google Scholar
Madsen, H. F. 1970. Control of the fruit-tree leafroller and notes on its biology in British Columbia. Can. Ent. 102: 746–749.CrossRefGoogle Scholar
Madsen, H. F. and Carty, B. E.. 1977. Fruittree leafroller: Control of a population tolerant to diazinon. J. econ. Ent. 70(5): 615–616.CrossRefGoogle Scholar
Madsen, H. F., Peters, F. E. and Vakenti, J. M.. 1975. Pest Management: Experience in six British Columbia apple orchards. Can. Ent. 107: 873–877.CrossRefGoogle Scholar
Madsen, H. F., Potter, S. A., and Peters, F. E.. 1977. Pest Management: Control of Archips argyrospilus and Archips rosanus (Lepidoptera: Tortricidae) on apple. Can. Ent. 109: 171–174.CrossRefGoogle Scholar