Studies on Resistance of Strawberries to Mites. 3. Preference and Non preference Responses of Tetranychus urticae1 and T. turkestani1 to Essential Oils of Foliage2

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The two spotted spider mite, Tetranychus urticae Koch, and the strawberry spider mite. T. turkestani Ugarov & Nikolski were tested for their reaction to essential oils of strawberry foliage form 'Citation,' a cultivar relatively snsceptible to injury from these phytophagous mites. The following II essential oils were assayed for response of the mites: furfural, trans-2-hexen-l-ol, nonyl alcohol, linalool, nonyl aldehyde, pelargonic acid, cis-3- hexen-ol, a-terpineol, octyl alcohol. methyl salicylate, and methyl naphthalene. A test designed to study the reaction of T. urticae On bean leaf disks while they arc enclosed with vapors of essential oils showed that, with a few exceptions, the oils elicited an avoiding response from the mites. Nonyl alcohol and a-terpineol at 0.1 % did not repel. The choice-tube technique served as the main bioassay method; Imrls-2-hexen-l-ol was an attractant or repellent, depending on concentration, to both species of mites. Generally the essential oils showed a repellent action: however. 0.01% and 0.1% trans-2-hexen- 1-01, mixtures of 0.1% and 1.0% octyl alcohol + furfural, and 0.1% solution of a-terpineol + methyl saicylate attracted T. urticae. Six oils at low concentrations were also significantly attractive to T. turkeslani.

Document Type: Research Article

Publication date: April 1, 1971

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  • 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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