Bulletin of the Faculty of Agriculture, Shimane University

Faculty of Agriculture, Shimane University

ISSN:0370-940X

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Bulletin of the Faculty of Agriculture, Shimane University 15

1981-12-15 発行

Resmethrinとpiperonyl butoxideのイエバエに対する相乗毒性 : Hewlettの数学的モデルによる解析

Synergistic Toxicity to Musa domestica L. of Mixtures of Resmethrin and Piperonyl Butoxide : Fitting a Mathematical Model Proposed by Hewlett

Nagasawa, Sumio

Shibuya, Shigeo

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The mixtures of resmethrin and piperonyl butoxide in acetone were applied topically to adults of the house fly, Musca domestica L. The dosage-mortality relations were analysed by fitting a mathematical model proposed by Hewlett(1969) to the data,
y=a+b_1 log z_1+b_2z_2/(c+z_2),
where y is probit mortality, z_1=dose of resmethrin, and z_2=dose of piperonyl butoxide, a, b_1,b_2 and c are parameters. The model was fairly applicable to the data, and a mixture with an indefinitely large ratio of piperonyl butoxide was estimated to be 4.25 times as toxic as resmethrin alone.

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