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Laboratory Study on the Contact Toxicity of DDT to Ectropis crepuscularia Schiff.1

Published online by Cambridge University Press:  31 May 2012

A. P. Randall
A. P. Randall
Affiliation:
Chemical Control Section Ottawa, Ontario
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Extract

An aerial spray program was conducted by the District of Kitimat, B.C. on August 1, 1960 for the control of the saddle-backed looper, Ectropis crepuscularia Schiff. An oil formulated DDT spray (1/2 pound technical DDT per U.S. gallon), was applied by aircraft at a rate of 1 gallon per acre. The results were inconclusive and raised the questions as to whether the low insect mortality counts were due to inadequate spray coverage or to the relative low susceptibility of the larvae to the DDT formulation. (Silver, 1961).

Type
Articles
Information
The Canadian Entomologist , Volume 94 , Issue 4 , April 1962 , pp. 424 - 428
Copyright
Copyright © Entomological Society of Canada 1962

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References

Busvine, J. R. 1957. Techniques for Testing Insecticides. Commonwealth Institute of Entomology, 56 Queen's Gate, London, S.W.7.Google Scholar
Silver, G. T. 1961. Notes on the chemical control of Ectropis crepuscularia Schiff. at Kitimat, B.C. Proc. Ent. Soc. B.C. 58: 13–16.Google Scholar