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Population Analyses of Resistance Patterns in Spider Mites of the Tetranychus telarius1 Complex (Red and Green Forms) Occurring in Egypt2

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Resistance to miticides was detected in 2 mite species which are major pests on cotton in Egypt. There were 2 cases of dicofol resistance in the red species around Damanhur and Fayum, which must be called regional. In the green species resistance against amidithion was diagnosed in 2 populations-Kafr El Sheikh and the sprayed area of Giza. Probing of populations from fields neal' Kafr El Sheikh did not reveal further resistance, so this case must be called focal], contrary to the dicofol resistance of Damanhur and Datum regions.

There are no such complete data for the environment of the treated area of Giza, but the values of the Imbaba population (Giza) show that resistance has not yet spread to the farther environment of the sprayed area of Giza. Mite populations of this neighborhood deserve attention, as it is here that the green form demonstrates multiple resistance against organophosphates and organochlorines.

Emphasis is placed on the diagnostic pan in plant protection featuring toxicological analysis of field populations of the pests to be controlled. In highly intensive cultures pest control thus may he raised from empirism to discriminative action.

Document Type: Research Article

Publication date: December 1, 1969

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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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