Control of the Balsam Woolly Adelgid (Homoptera: Adelgidae) in Fraser Fir Christmas Tree Plantations

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Abstract:

Single applications of 0.51% insecticidal soap/diazinon (40%:0.4% AI), 0.52% insecticidal soap/methoxychlor (38.7%:3.0% AI), 0.01% fenvalerate, 0.01% permethrin, and one and two applications of 0.63% Safer's insecticidal soap were tested against the egg, crawler, nymph, and adult of the balsam woolly adelgid, Adelges piceae (Ratzeburg). With the exception of the soap/methoxychlor, all materials appeared to be effective against nonegg stages. The residual toxicity of fenvalerate and permethrin killed all nonegg stages, resulting in no egg production in later samplings. Fenvalerate and insecticidal soap did not adversely affect nontarget organisms in the litter. Fenvalerate showed no phytotoxicity applied to Fraser fir, Abies fraseri (Pursh) Poir. Christmas trees at 0.01, 0.02, 0.04, and 0.08% concentrations. A soap discoloration study indicated that succulent foliage (June growth) may be sensitive to soap treatments, but multiple sprays of either high or low concentrations may be used with little discoloration at times later than June.

Document Type: Research Article

Publication date: December 1, 1986

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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