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Laboratory and Field Observations on Two Predators of the Pear Psylla in British Columbia1

Published online by Cambridge University Press:  31 May 2012

T. K. Watson  and
W. H. A. Wilde
T. K. Watson
Affiliation:
Research Station, Research Branch, Canada Department of Agriculture, Summerland, British Columbia.
W. H. A. Wilde
Affiliation:
Research Station, Research Branch, Canada Department of Agriculture, Summerland, British Columbia.
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Abstract

During 1961 and 1962 observations were made on the activities of predators of the pear psylla, Psylla pyricola Förster, in the Okanagan Valley of British Columbia. Attacking the psylla together, the anthocorid bug, Anthocoris melanocerus Reuter, and the green lacewing, Chrysopa oculata Say, gave more effective suppression than either predator alone. DDT and Diazinon drastically reduced numbers of these predators b commercial plantings. In non-sprayed, isolated orchards, trace numbers of these predators maintained effective control of pear psylla populations.

Type
Articles
Information
The Canadian Entomologist , Volume 95 , Issue 4 , April 1963 , pp. 435 - 438
Copyright
Copyright © Entomological Society of Canada 1963

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References

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