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    Author(s): Louis F. Wilson; Sharon L. Hobrla
    Date: 1987
    Source: The Great Lakes Entomologist. 20(4): 187-192.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (312.0 KB)

    Description

    A method is proposed for rapidly estimating the nymphal population of the Saratoga spittlebug on alternate host plants in young red pine plantations. The method is based on an assumption that the number of nymphs per sample unit is distributed within an infested plantation according to the negative binomial distribution. This method can be 1.1-11.0 times more efficient depending upon the density of plants and the nymphal population level.

    Publication Notes

    • Check the Northern Research Station web site to request a printed copy of this publication.
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    • During the capture process some typographical errors may occur.
    • Please contact Sharon Hobrla, shobrla@fs.fed.us if you notice any errors which make this publication unusable.
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Wilson, Louis F.; Hobrla, Sharon L. 1987. A Procedure for Sampling Nymphs of Saratoga Spittlebug, Aphrophora Saratogensis (Homoptera: Cercopidae), Using Percentage of Sample-Units Infested. The Great Lakes Entomologist. 20(4): 187-192.

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