Potential Use of Dylox and Other Insecticides in a Control Program for Field Crop Pests in California1
Authors: REYNOLDS, H. T.; STERN, V. M.; FUKUTO, T. R.; PETERSON, JR., G. D.
Source: Journal of Economic Entomology, Volume 53, Number 1, February 1960 , pp. 72-78(7)
Publisher: Entomological Society of America
Abstract:Dylox® (O,O-dimethyl 2,2,2-trichloro-1-hydroxyethylphosphonate) and several standard insecticides were evaluated for effectiveness on a rather wide range of insects damaging field crops in California. At varying dosages Dylox was effective in controlling the following pests on alfalfa hay: Alfalfa caterpillar, Colias philodice eurytheme Bdv.; webworm,Loxostege spp.; beet armyworm, Laphygma exigua. (Hbn.); and variegated cutworm, Peridroma margaritosa (Haw.). On seed alfalfa Dylox gave high mortalities of lygus bugs, Say stink bug, Chlorochroa sayi Stal, and Euschistus sp. In addition to the above-mentioned pests on seed alfalfa, on cotton Dylox was effective on cotton leaf perforator, Bucculatrix thurberiella Busck, salt-marsh caterpillar, Estigmene acrea (Drury), and was promising for control of southern garden leafhopper, Empoasca Solana DeL., and omniverous leafroller, Platynota stultana Wlshm. This chemical gave suits when applied to cotton for control of cabbage looper, Trichoplusia ni (Hbn.), and bollworm, Heliothis zea (Boddie). In general, the residual period of toxic activity in the field lasted only a few days.
Dylox residues on alfalfa hay were below 1 p.p.m. 4 days after application at dosages of as much as 1 pound per acre. Only trace amounts were detected 10 days after application.
Dylox was no more effective than some of the other compounds evaluated. In view of the fact, however, that it is relatively nontoxic to honey bee, Apis mellifera L., populations and, depending upon dosage applied, less toxic to most entomophagous arthropods than many chemicals currently in use, Dylox appeal's to be a potentially useful compound for use on many California field crops.
Document Type: Research Article
Publication date: February 1, 1960
- 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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