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CHEMICAL CONTROL OF ADELGES PICEAE (HOMOPTERA: ADELGIDAE) IN NEWFOUNDLAND, 1967

Published online by Cambridge University Press:  31 May 2012

W. W. Hopewell  and
D. G. Bryant
W. W. Hopewell
Affiliation:
Chemical Control Research Institute, Canada Department of Fisheries and Forestry, Ottawa, Ontario
D. G. Bryant
Affiliation:
Forest Research Laboratory, Canada Department of Fisheries and Forestry, St. John's, Newfoundland
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Abstract

Five insecticides (Baygon, diazinon, Dursban, Furadan, and menazon), previously shown to have some effect on control of the balsam woolly aphid, Adelges piceae (Ratz.), on branches of Abies balsamea (L.) Mill., have been tested more intensively. Individual trees were sprayed from the ground with 1.0, 0.5, or 0.25 litre of solution containing 5% active ingredient (an approximate per acre dosage rate of 12 to 25 lb). Dursban, Baygon, and diazinon caused 85, 75, and 72% mortality respectively. Furadan and menazon were less effective, causing 56 and 34% mortality.

Type
Articles
Information
The Canadian Entomologist , Volume 101 , Issue 10 , October 1969 , pp. 1112 - 1114
Copyright
Copyright © Entomological Society of Canada 1969

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