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The influence of repellent materials and aphid extracts on settling behaviour and larviposition of Myzus persicae (Suizer) (Hemiptera: Aphididae)

Published online by Cambridge University Press:  10 July 2009

D. C. Griffiths
Affiliation:
Rothamsted Experimental Station, Harpenden,Herts., UK
A. R. Greenway
Affiliation:
Rothamsted Experimental Station, Harpenden,Herts., UK
Susan L. Lyoyd
Affiliation:
Rothamsted Experimental Station, Harpenden,Herts., UK

Abstract

When incorporated into an artificial diet or painted on the surface of the membrane containing the diet, solutions of the insect repellent GD 880 (2-methyl-2-(octylamino)-1-propanol) killed aphids, whilst extracts of neem seeds (Azadirachta indica) or extracts of the bodies ofMyzus persicae (Sulz.) deterred settling and larviposition of apterous adults. The deterrent effect occurred even when the painted membrane was covered by a similar but untreated membrane. When applied in culture solutions to the roots of young kale plants, GD 880 and extracts of neem influenced aphids on the foliage only at concentrations that visibly affected plant growth, but neem extract (and to a lesser extent GD 880) decreased aphid colonisation when painted on kale leaves at non-damaging concentrations.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1978

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