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Evaluation of Systemic Insecticides as a Treatment Option in Integrated Pest Management of the Elm Leaf Beetle, Xanthogaleruca luteola (Müller) (Coleoptera: Chrysomelidae)

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Abstract:

This study evaluates the efficacy of two systemic insecticides (imidacloprid and abamectin) in an operational setting and their suitability to be incorporated into an integrated pest management program. Elm leaf beetle abundance and leaf damage were compared between treated trees and untreated control trees from 1995 through 1999. Laboratory bioassays using first-instar larvae were also used to measure the toxicity of leaves collected from treated trees at varying times after treatment. Trunk injections of abamectin and imidacloprid reduced the defoliation caused by elm leaf beetle when applied after monitoring at the peak density of elm leaf beetle eggs. Treatment in the first generation appeared to provide protection against damage in that generation as well as the second and third beetle generations. Both of these materials become active within the tree canopy very quickly and are therefore compatible with a management program that determines the need for treatment based on monitoring for egg clusters at peak density of eggs. Laboratory bioassays showed no toxicity of leaves in the year following treatment.

Keywords: Xanthogaleruca luteola; abamectin; elm leaf beetle; imidacloprid; integrated pest management

Document Type: Research Article

DOI: http://dx.doi.org/10.1603/0022-0493-96.5.1455

Publication date: October 1, 2003

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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