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1 August 2014 Beneficial Insects Attracted to Native Flowering Buckwheats (Eriogonum Michx) in Central Washington
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Abstract

Native plant and beneficial insect associations are relatively unstudied yet are important in native habitat restoration programs aimed at improving conservation biological control in perennial crops such as wine grapes. Beneficial insects (predators, parasitoids, pollinators) attracted to 10 species of flowering native wild buckwheat (Eriogonum spp.) in central Washington were identified and counted on transparent sticky traps. Combining all categories of beneficial insects, the mean number per trap ranged from 48.5 (Eriogonum umbellatum) to 167.7 (Eriogonum elatum). Three Eriogonum spp. (E. elatum, Eriogonum compositum, and Eriogonum niveum) attracted significantly more beneficial insects than the lowest-ranked species. E. niveum attracted greatest numbers of bees and parasitic wasps, and E. elatum was highly attractive to predatory true bugs and beneficial flies. Blooming periods of Eriogonum spp. extended from mid April to the end of September. This study demonstrates the attraction of beneficial insects to native flowering buckwheats and suggests their potential as a component of habitat restoration strategies to improve and sustain conservation biological control in Washington viticulture.

© 2014 Entomological Society of America
David G. James, Lorraine Seymour, Gerry Lauby, and Katie Buckley "Beneficial Insects Attracted to Native Flowering Buckwheats (Eriogonum Michx) in Central Washington," Environmental Entomology 43(4), 942-948, (1 August 2014). https://doi.org/10.1603/EN13342
Received: 11 December 2013; Accepted: 1 May 2014; Published: 1 August 2014
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