ミナミキイロアザミウマに対する薬剤の殺虫效果と協力作用

概要

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The susceptibilities of Thrips palmi KARNY collected from Kishigawa and Inami, Wakayama Prefecture, to some insecticides were determined by a spray method during 1985-1991. Females collected from cucumber or kidney bean fields were released on leaf discs of kidney bean and kept at 25℃ for 2 days for oviposition. Insecticides were sprayed on the 2-3 day larvae. The LC_<50> values for fenobcurb, methidathion, and cypermethrin were 428-821ppm, 137-551ppm, and 16-41ppm for Kishigawa population, and 558-1266ppm, 440-911ppm, and 29-76ppm for Inami population, respectively. No remarkable changes with time were observed in the susceptibilities to these pesticides. However, the susceptibility of Kishigawa population to sulprofos had decreased since 1990,reaching 572ppm for the LC_<50> value in 1991. Field experiments with sulprofos also showed thrips control failure in that region. The toxicities of binary mixtures of some pesticides to T. palmi larvae were examined. High synergism was found with sulprofos/cypermethrin, sulprofos/fenobcurb, and methidathion/fenobcurb mixtures.
日本応用動物昆虫学会の論文
1993-08-25