A control test of flies and their larvae by the application of Nankor

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  • Yura Akio
    Yashiro Health Center, Hyogo Prefecture
  • Kato Seiichi
    兵庫県環境衛生推進協議会小野市加東郡支部
  • Okuda Shiro
    Nagaoka Insecticide Mfg. Co., Ltd.
  • Suzuki Takeshi
    Department of Parasitology, the Institute for Infectious Diseases, University of Tokyo

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Other Title
  • Nankor 散布によるハエ成虫及び幼虫の駆除実験
  • Nankor サンプ ニ ヨル ハエ セイチュウ オヨビ ヨウチュウ ノ クジョ ジッケン

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Description

A field control test of adult and larval flies by the application of Nankor, or O, O-dimethyl 0-2, 4, 5-trichlorophenyl phosphorothioate, was carried out from August to September, 1960. Either 0.5% kerosene solution of Nankor was sprayed on the ceiling and walls of dwellings and cattle sheds, or 1% solution was applied as aerosol. This was repeted at intervals of 10, 14 or 20 days. On the other hand, 0.025% Nankor emulsion was sprayed on the floors of cattle sheds at rate of 1l/m^2, and in the latrins 2l/m^2, both once a week. As the synerthetic effect of these treatment, the population of house flies remarkably decreased from 15 to 20 days after the first application. This was more remarkable in cattle sheds than in human dwellings. The decrease was suposed to be attributed mainly to the effect of larvicide applied on the floors of cattle sheds. To the lavae in latrins, the application of 0.025 to 0.05% Nankor emulsion at rate of 1l/m^2 once a week was effective. However, as the larvae reappear after 4 to 7 days, the application should be repeted at intervals of 7 or 10 days for practical control.

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