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The Influence of Spray Programs on the Fauna of Apple Orchards in Nova Scotia. VII. Effects on Some Beneficial Arthropods1

Published online by Cambridge University Press:  31 May 2012

A. W. MacPhee  and
K. H. Sanford
A. W. MacPhee
Affiliation:
Fruit Insect Section, Science Service Laboratory, Kentville, Nova Scotia
K. H. Sanford
Affiliation:
Fruit Insect Section, Science Service Laboratory, Kentville, Nova Scotia
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Extract

The toxicities of a large number of spray chemicals to arthropod pests are well known. In most instances, observations on the effects of such materials on natural enemies have beeen incidental to other studies, and little has been published on experiments designed to determine the direct toxicities of the chemicals to beneficial species. The effects of spray chemicals on the predators and parasites of the major pests of apple trees in Nova Scotia have been investigated as part of a broader project on the factors that influence population densities of orchard arthropods, as outlined by Pickett et al. (31).

Type
Articles
Information
The Canadian Entomologist , Volume 86 , Issue 3 , March 1954 , pp. 128 - 135
Copyright
Copyright © Entomological Society of Canada 1954

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