The Effectiveness of Various Pesticides against Resistant Two-Spotted Spider Mites on Greenhouse Roses¹

Authors: ALLEN, WILLIAM W.; OTA, A. K.; GEHRING, R. D.

Source: Journal of Economic Entomology, Volume 57, Number 2, April 1964 , pp. 187-192(6)

Publisher: Entomological Society of America

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Abstract:

High-gallonage sprays were applied to greenhouse roses heavily infested with two-spotted spider mites (Tetranychlls telarius (L.)) to determine the extent of resistance and what groups of compounds might afford practical control. The results indicate that resistance has developed to most of the materials previously used for mite control; these include Aramite® (2-(p-tert-butylphenoxy) isopropy! 2-chloroethyl-sulphite), chlorobenzilate, tetradison, tepp, malathion, and schradan. There is also evidence that cross resistance has developed to numerous pesticides, for many that have not previously been used were nevertheless ineffective.

It is apparent from this study that compounds unrelated to previously used acaricides are effective against these resistant mites. BinapacryI, Eradex® (2,8-quinoxalinedithiol cyclic trithiocarbonate), and Bayer 86205 (6-methyl-2,8-quinoxalinedithiol cyclic carbonate) can be placed in this category but cannot be used at effective dosages because of phytotoxicity on roses. Pentac (bis(pentachloro-2,4-cyclopentadien-.5-yl), and Bidrin® (3-hydroxy--N,N-dimethyl-cis-croton-amide dimethyl phosphate) represent two dissimilar materials that show promise for control of resistant mites on roses. Pentac, with its low mammalian toxicity and lack of phytotoxicity, has already proven to be a highly practical and effective control.

Document Type: Research article

Publication date: 1964-04-01

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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