Abstract
The author reported in the previous paper (OSAKABE, 1968) that the resistant mites to Phenkapton and Estox (O, O-dimethyl s-(1-methyl-2-ethylsulfinyl)-ethyl phosphorothioate) have been widely distributed in Japanese tea plantations. This paper dealt with the atoxic effects of various insecticides and acaricides on the resistant mite to Phenkapton and Estox. In the laboratory tests, Kelthane, Chlorobenzilate, Milbex (4-chlorophenyl 2, 4, 5-trichlorophenylazosulfide and Dimite mixed), Newmite (Ovex, Aramite and Dimite mixed), and Acricid (2-(sec-buthyl)-4, 6-dinitrophenyl β, β-dimethylacrylate) showed good effects to the resistant mites, but some of organophosphorous compounds such as EPN, Phenkapton, Estox, Imidan, Vamidothion, and Malathion showed less toxic to the mites.
