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DESIGN OF A SAMPLING PLAN FOR STUDIES ON THE POPULATION DYNAMICS OF THE CABBAGE MAGGOT, HYLEMYA BRASSICAE (DIPTERA: ANTHOMYIIDAE)

Published online by Cambridge University Press:  31 May 2012

M. K. Mukerji  and
D. G. Harcourt
M. K. Mukerji
Affiliation:
Entomology Research Institute, Canada Department of Agriculture, Ottawa
D. G. Harcourt
Affiliation:
Entomology Research Institute, Canada Department of Agriculture, Ottawa
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Abstract

A study of sampling variation in field populations of the cabbage maggot, Hylemya brassicae (Bouché), on cabbage in Ontario, revealed that inter-plant and block differences were rarely significant. For the immature stages, the most appropriate sample unit was the plant root together with a 4- to 6-in. diameter core of soil. The number of samples required was inversely proportional to population density; this relationship was graphed for three levels of sampling precision.The insect is bivoltine in eastern Ontario but has three generations in the southwestern part of the province.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 12 , December 1970 , pp. 1513 - 1518
Copyright
Copyright © Entomological Society of Canada 1970

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