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The Potency and Persistence of some new Synthetic Insecticides

Published online by Cambridge University Press:  10 July 2009

J. R. Busvine  and
Ruth Nash
J. R. Busvine
Affiliation:
London School of Hygiene and Tropical Medicine.
Ruth Nash
Affiliation:
London School of Hygiene and Tropical Medicine.
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Extract

Simple laboratory methods are described for assessing the potency and persistence of insecticides. Some of the newer synthetic insecticides have been tested by these methods against seven arthropod pests of medical importance.

Initial potency was judged by the mortality of insects exposed to standard films of oil solutions of the compounds, on filter papers. The approximate order of potency of the samples tested was:—

γBHC>dieldrin>aldrin=pyrethrins>chlordane=DDT= “Pyrolan” =allethrin> toxaphene.

Residual action was judged by the mortality of batches of bed bugs exposed to films of the insecticides, at intervals up to six months after preparation. The approximate order of persistence was:—

dieldrin=DDT=toxaphene>“Pyrolan”>γBHC=chlordane=aldrin>allethrin, pyrethrins.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 44 , Issue 2 , July 1953 , pp. 371 - 376
Copyright
Copyright © Cambridge University Press 1953

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References

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