Control of Housefly Population in Landfill Sites with Foam Covering in Place of Soil

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  • 最終処分場におけるフォーム即日覆土材のイエバエ発生抑制に関する研究
  • サイシュウ ショブンジョウ ニ オケル フォーム ソクジツ フクドザイ ノ イ

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Abstract

Houseflies, claws, and offensive odors are still the most common problems in any landfill site. To cope with such problems, various types of pesticides have been used. Intensive use of chemicals, however, has brought about a new concern : it has made the target species more resistant to these pesticides. As a result, the range of chemicals effective against the insect pests has been considerably reduced. Meanwhile, the use of daily cover soil has gone into decline because it occupies quite a large portion of the landfill site, and so reduces the life of the latter.<BR>This paper reports on an experiment conducted with two types of foam (non-hardening and hardening types) in two landfill sites in the southern part of Kyushu. Unlike daily cover soil, foam disappears and so does not waste any space in a landfill site. One site was used as a control ; we sprayed the other experimental site with foams for about a month. We then examined the population of houseflies, allowing for meteorological impact on their population density. We used two adhesive ropes as a means of measuring the density of the housefly population. Judging from the results of the experiment, it is suggested that both types of foam are effective for controlling the population of houseflies, and that the foams can replace the daily cover soil.

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