Integrated management of little spruce sawfly (Pristiphora abietina): design pattern

J. Holusa; K. Drapela

Treesearch

Integrated management of little spruce sawfly (Pristiphora abietina): design pattern

Informally Refereed

Authors:

J. Holusa, K. Drapela

Year:

2003

Type:

Other

Station:

Northern Research Station

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.

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Abstract

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.

Parent Publication

Proceedings: Ecology, Survey and Management of Forest Insects

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.