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SOME EFFECTS OF WIND ON THE EUROPEAN RED MITE, PANONYCHUS ULMI (ACARINA: TETRANYCHIDAE)1

Published online by Cambridge University Press:  31 May 2012

Wm. L. Putman
Affiliation:
Research Station, Canada Department of Agriculture, Vineland Station, Ontario

Abstract

Larger populations of the European red mite, Panonychus ulmi (Koch), developed on artificially infested young peach trees protected by screen windbreaks than on unprotected trees. In the laboratory rather high air velocities were required to blow mites off the leaves. Agitation of leaves without contact between them had no effect on the mites. Whipping of leaves back and forth caused appreciable mortality of mites on them, and mortality was further increased when the leaves could beat together. It was concluded that wind causes considerable mortality of mites in peach orchards mostly through friction between leaves.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1970

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References

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