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PICKUP OF PHOSMET WETTABLE POWDER BY CODLING MOTH LARVAE (LASPEYRESIA POMONELLA (LEPIDOPTERA: OLETHREUTIDAE)) AND TOXICITY RESPONSES OF LARVAE TO SPRAY DEPOSITS

Published online by Cambridge University Press:  31 May 2012

R. W. Fisher  and
D. R. Menzies
R. W. Fisher
Affiliation:
Research Station, Agriculture Canada, Vineland Station, Ontario L0R 2E0
D. R. Menzies
Affiliation:
Research Station, Agriculture Canada, Vineland Station, Ontario L0R 2E0
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Abstract

Larvae picked up wettable powder particles on legs, setae, and mouth parts. Phosmet was 5 times more toxic in small droplets than in large droplets to first instar codling moth, but small droplets required 2.5 times the number/cm2. With large droplets, a larger treated area was required to produce 50% mortality. For any percentage area covered small droplets gave higher mortality. Speed of toxic action was related to amount of phosmet/cm2 and to no. of droplets/cm2.

Type
Articles
Information
The Canadian Entomologist , Volume 111 , Issue 2 , February 1979 , pp. 219 - 223
Copyright
Copyright © Entomological Society of Canada 1979

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References

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