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Soil application of systemic insecticides for control of woolly apple aphid (Eriosoma lanigerum (Hsm.)) in Rhodesia

Published online by Cambridge University Press:  10 July 2009

C. J. Hodgson
C. J. Hodgson
Affiliation:
Department of Research and Specialist Services
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Extract

Previous attempts to control Woolly Apple Aphid (Eriosoma lanigerum (Hsm.)) in Rhodesia are briefly reviewed. By the application of dimethoate at a rate of more than 5.0 grams a.i. or of vamidothion at more than 6.0 grams a.i. to the soil in the drip area of the tree, it was found that good control of both the foliar and root populations of the insect could be obtained on three-year-old apple trees 10 feet high. and the treatment appeared to remain effective for three seasons. It is considered that the timing of the application, the soil temperature, and the amount of wead cover are all important factors in affecting the amount of insecticide taken up by the apple trees.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 58 , Issue 1 , September 1968 , pp. 73 - 82
Copyright
Copyright © Cambridge University Press 1968

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References

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