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The Effect of Medium on the Toxicity of DDT to Aphids

Published online by Cambridge University Press:  10 July 2009

Extract

It is shown that the insecticidal value to Macrosiphum solanifolii of DDT depends upon the medium in which it is incorporated. It is more toxic (4–6 times) when dispersed as an emulsion dissolved in a water-insoluble solvent (benzene) than when dissolved in a water-soluble solvent (acetone-carbitol) and dispersed as a suspensoid.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1947

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References

Annand, P. N. & others (1944). J. econ. Ent., 37, pp. 125159.CrossRefGoogle Scholar
Bliss, C. I. (1935). The calculation of the dosage-mortality curve.—Ann. appl. Biol., 22, pp. 134167.CrossRefGoogle Scholar
Finney, D. J. (1944). The application of the probit method to toxicity test data adjusted for mortality in the controls.—Ann. appl. Biol., 31, pp. 6874.CrossRefGoogle Scholar
Potter, C. (1941). A laboratory spraying apparatus and technique for investigating action of contact insecticides with some notes on suitable test insects.—Ann. appl. Biol.,28, pp. 142169.CrossRefGoogle Scholar
Tattersfield, F. & Potter, C. (1943). Biological methods of determining the insecticidal values of pyrethrum preparations (particularly extracts in heavy oil).—Ann. appl. Biol., 30, pp. 259279.CrossRefGoogle Scholar