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A SAMPLING PLAN FOR STUDIES ON THE POPULATION DYNAMICS OF WHITE GRUBS, PHYLLOPHAGA SPP. (COLEOPTERA: SCARABAEIDAE)1

Published online by Cambridge University Press:  31 May 2012

J. C. Guppy  and
D. G. Harcourt
J. C. Guppy
Affiliation:
Ottawa Research Station, Canada Department of Agriculture, Ottawa
D. G. Harcourt
Affiliation:
Ottawa Research Station, Canada Department of Agriculture, Ottawa
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Abstract

A study of sampling variation in the white grubs Phyllophaga fusca Froelick and P. anxia LeConte in a permanent meadow showed that inter-plot differences occurred in 70% of the samples. Block differences were rarely significant. For all stages, the most appropriate sample unit was a 1 ft cube of soil and sod. The number of samples required was inversely proportional to population density; this relationship was graphed for three levels of sampling precision.

Type
Articles
Information
The Canadian Entomologist , Volume 105 , Issue 3 , March 1973 , pp. 479 - 483
Copyright
Copyright © Entomological Society of Canada 1973

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