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    Author(s): J. Holusa; K. Drapela
    Date: 2003
    Source: In: McManus, Michael L.; Liebhold, Andrew M., eds. Proceedings: Ecology, Survey and Management of Forest Insects; 2002 September 1-5; Krakow, Poland. Gen. Tech. Rep. NE-311. Newtown Square, PA: U.S. Dept. of Agriculture, Forest Service, Northeastern Research Station. 16-24.
    Publication Series: Other
    Station: Northeastern Research Station
    PDF: View PDF  (182.09 KB)

    Description

    This paper presents the design of a regulation model of the little spruce sawfly that is based on monitoring of defoliation. This method is based on the assessment of the percentage of defoliation of each whorl from ca. 100+ trees, beginning from the top and using four classes of defoliation. The critical value influencing the height of current increment of trees is six. Consequently 20 yellow sticky boards installed in lines on every other tree could monitor the next spring abundance of sawfly adults. Critical value is about 11 to 19 females per one sticky board (format A5). Impact of low temperature on sawfly populations during swarming is still not clear. Possibilities for using chemical measures for control are discussed.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Holusa, J.; Drapela, K. 2003. Integrated management of little spruce sawfly (Pristiphora abietina): design pattern. In: McManus, Michael L.; Liebhold, Andrew M., eds. Proceedings: Ecology, Survey and Management of Forest Insects; 2002 September 1-5; Krakow, Poland. Gen. Tech. Rep. NE-311. Newtown Square, PA: U.S. Dept. of Agriculture, Forest Service, Northeastern Research Station. 16-24.

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https://www.fs.usda.gov/treesearch/pubs/19116