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Baseline responses of United Kingdom field populations of Macrosiphum euphorbiae (Thomas) and Brevicoryne brassicae (L.) (Hemiptera: Aphididae) to demeton-S-methyl

Published online by Cambridge University Press:  10 July 2009

C. Furk  and
H. Roberts
C. Furk
Affiliation:
Ministry of Agriculture, Fisheries and Food, Harpenden Laboratory, Hatching Green, Harpenden, Herts AL5 2BD, UK
H. Roberts
Affiliation:
Ministry of Agriculture, Fisheries and Food, Harpenden Laboratory, Hatching Green, Harpenden, Herts AL5 2BD, UK
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Abstract

Baseline responses of United Kingdom field populations of Macrosiphum euphorbiae (Thomas) and Brevicoryne brassicae (L.) to demeton-S-methyl were investigated using the FAO-recommended dip-test bioassay. Dose-response lines were produced, and discriminating doses for the two species were derived from the results (320 and 500 mg a.i./litre, respectively) and validated by testing further field populations at those single doses. Of the 1620 individuals of M. euphorbiae and 330 of B. brassicae tested, none survived the discriminating doses.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 75 , Issue 1 , March 1985 , pp. 65 - 72
Copyright
Copyright © Cambridge University Press 1985

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