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Chemical Control of the Pine Needle Scale, Phenacaspis pinifoliae (Fitch) (Homoptera: Diaspididae), in British Columbia1

Published online by Cambridge University Press:  31 May 2012

M. D. Proverbs
M. D. Proverbs
Affiliation:
Entomology Laboratory, Summerland, B.C.
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Extract

During the past few years the pine needle scale, Phenacaspis pinifoliae (Fitch), has severely injured ponderosa pine, Engelmann spruce, and other evergreens in the Okanagan Valley of British Columbia. The home owner is most concerned because this insect is capable of ruining the appearance of evergreens on his property. Infestations may be severe on trees growing in submarginal forest areas.

Field experiments were conducted in the South Okanagan Valley in 1955 to determine whether lime-sulphur, malathion, or Diazinon (0,0-diethyl-0-[2-isopropyl-4-methyl-pyrimidyl (6)] thiophosphate) would control the scale on ponderosa pine trees.

Type
Articles
Information
The Canadian Entomologist , Volume 88 , Issue 11 , November 1956 , pp. 653 - 655
Copyright
Copyright © Entomological Society of Canada 1956

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References

Felt, E. P., and Rankin, W. H.. 1938. Insects and diseases of ornamental trees and shrubs. The Macmillan Company, New York, NY.Google Scholar
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Neiswander, R. B. 1951. Controls for pine needle scale. Ohio Farm and Home Research 36 (268): 10–11.Google Scholar
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