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FURTHER OBSERVATIONS ON THE INTEGRATED CONTROL OF THE FRUITTREE LEAFROLLER (LEPIDOPTERA: TORTRICIDAE) IN BRITISH COLUMBIA1

Published online by Cambridge University Press:  31 May 2012

Harold F. Madsen  and
Wesley W. Davis
Harold F. Madsen
Affiliation:
Research Station, Canada Department of Agriculture, Summerland, British Columbia
Wesley W. Davis
Affiliation:
Research Station, Canada Department of Agriculture, Summerland, British Columbia
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Abstract

Overwintering eggs of the fruittree leafroller, Archips argyrospilus (Walker), began to hatch 13 April 1970, and larval emergence was completed by 8 May. Individual egg masses hatched in an average of 4.3 days, but the total time for larval emergence in all egg masses spanned a 25-day period. No egg parasites were observed. Winter mortality of egg masses was only 2%.A pink bud spray of diazinon gave good control of the fruittree leafroller and did not affect biological control of spider mites. Chlorphenamidine showed promise, but trees sprayed with this material developed a high population of the McDaniel spider mite, Tetranychus mcdanieli McGregor, during the summer. Phosalone and tetrachlorvinphos reduced the incidence of fruittree leafroller damage below that of the nonsprayed check but did not provide satisfactory control.

Type
Articles
Information
The Canadian Entomologist , Volume 103 , Issue 11 , November 1971 , pp. 1517 - 1519
Copyright
Copyright © Entomological Society of Canada 1971

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References

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