Toxicity of Fe-EDTA to the Two-Spotted Spider Mite1,2

Author: CANNON, JR., WILLIAM N.

Source: Journal of Economic Entomology, Volume 63, Number 4, August 1970 , pp. 1195-1195(1)

Publisher: Entomological Society of America

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Abstract:

Fe-EDTA (sodium ferric ethylenediamine tetra acetate) was tested by a leaf-dip and a slide-dip method for its toxicity to adult female Tetranychus urticae Koch. By the leaf-dip method the LC50 ± 95% confidence limit was 1.49 ± 0.22 g per liter. By the slide-dip method the LC50 ± 95 CL was 23.93 ± 6.11 g per liter. Fe-EDTA was more toxic to adult female mites by contact plus feeding action than by contact alone. Residues of 5g Fe-EDTA per liter on bean leaves held in the laboratory caused 98% mortality 7 days after application. Further tests showed that a 10-minute exposure to this concentration of Fe-EDTA was sufficient to cause death in 67% of the mites 3 hours after exposure.

Document Type: Research Article

Publication date: August 1, 1970

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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