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UNDERSTORY VEGETATION ASSOCIATED WITH SARATOGA SPITTLEBUG DAMAGE IN MICHIGAN RED PINE PLANTATIONS 1

Published online by Cambridge University Press:  31 May 2012

Patrick C. Kennedy  and
Louis F. Wilson
Patrick C. Kennedy
Affiliation:
Geigy Agricultural Chemical Division, Ciba-Geigy Chemical Corporation, Ardsley, NewYork
Louis F. Wilson
Affiliation:
North Central Forest Experiment Station, U.S. Department of Agriculture, East Lansing , Michigan
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Abstract

The amount of sweet-fern was significantly related to the degree of Saratoga spittlebug adult injury to red pine on study plots in Lower Michigan. Other host plants supporting spittlebugs must be extremely abundant before populations increase enough to cause heavy injury. A spittlebug risk-rating device is presented that specifies hazard in a red pine stand by plotting per cent sweet-fern against per cent other suitable hosts.

Type
Articles
Information
The Canadian Entomologist , Volume 103 , Issue 10 , October 1971 , pp. 1421 - 1426
Copyright
Copyright © Entomological Society of Canada 1971

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References

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