Laboratory and Greenhouse Evaluations of Insecticides and Insect Growth Regulators for Control of Foliar and Root Infesting Mealybugs

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Abstract:

Laboratory results indicated that acephate, oxydemetonmethyl, and the growth regulator, kinoprene, were highly toxic to adult Pseudococcus longispinus (Targioni-Tozzetti) and Phenacoccus solani Ferris. Methoprene and Ro 10-3108 (7570 2-ethyl-3-[3-ethyl-5- (4-ethylphenoxy) - pentyl]-2-methyloxirane (cis/trans) and 25% 2-ethyl-3- [5 - (4 -ethylphenoxy) -2.3-dimethylpentyl]-2-methyloxirane (cis/trans) were less toxic but reduced reproduction. In greenhouse tests, acephate, oxydemetonmethyl, and kinoprene suppressed populations of both mealybug species and prevented crop damage. Methoprene did not control greenhouse populations; Ro 10-3108 reduced populations but not quickly enough to prevent unsightly damage. Overall reductions of Rhizoecus floridanus Hambleton by kinoprcne and Ro 10-3108 were comparable to the insecticides, acephate and oxamyl. Oxydemetonmethyl and Ro 20-3600 (6,7-epoxy-3-methyl-7-ethyl-1-[3,4- (methylenedioxy) phenoxy]-2-cis/trans-octene) proved less effective.

Document Type: Research Article

Publication date: April 1, 1977

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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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