Increased Tolerance of the Boll Weevil and Cotton Fleahopper to Some Chlorinated Hydrocarbon Insecticides in Central Texas in 19581
- 1 February 1960
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 53 (1) , 52-56
- https://doi.org/10.1093/jee/53.1.52
Abstract
The boll weevil (Anthonomus grandis Boh.) and cotton fleahopper (Psallus seriatus (Reut.)) showed increased tolerance to several of the chlorinated hydrocarbon insecticides in central Texas in 1958.Topical-application studies on weevils reared from squares collected from one field in July indicated increased tolerance to toxaphene and a high tolerance to dieldrin. In field experiments much better control was obtained with Sevin® (1- naphthyl N-methyl carbamate) and such organic-phosphorus compounds as Guthion® (D,D-dimethyl S-(4-oxo-3H-1,2,3- benzotriazine-3-methyl) phosphorodithioate) and malathion than with toxaphene and dieldrin. Dosages of toxaphene, dieldrin, and heptachlor two and three times those effective in previous years failed to control the cotton fleahopper. Sevin, Guthion, malathion, toxaphene plus DDT, dieldrin plus DDT, and DDT alone were effective, but DDT has not been used against the cotton fleahopper for 10 years in the area.This publication has 0 references indexed in Scilit: