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CONTROL OF THE BIRCH LEAF MINER WITH DISULFOTON1

Published online by Cambridge University Press:  31 May 2012

H. H. Cheng  and
E. J. LeRoux
H. H. Cheng
Affiliation:
Department of Entomology, Macdonald College of McGill University, Macdonald College P.O., Quebec
E. J. LeRoux
Affiliation:
Department of Entomology, Macdonald College of McGill University, Macdonald College P.O., Quebec
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Abstract

One ounce of ten per cent granular disulfoton, per tree, applied to 3- and 4-year old blue birch in mid-May, was found to take approximately 2 weeks before reaching significantly toxic levels in the leaves. Thereafter, these levels gave excellent control of Fenusa pusilla (Lepeletier) for the 1-year-and-4-month period of the experiment (May 1964 – September 1965). At this dosage, it would appear, the chemical can indefinitely suppress populations of the birch leaf miner if applied once every 2 years.

Type
Articles
Information
The Canadian Entomologist , Volume 100 , Issue 4 , April 1968 , pp. 350 - 357
Copyright
Copyright © Entomological Society of Canada 1968

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