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Residues of Chlorpyrifos in Cured Tobacco

机译:烤烟中毒死rif的残留量

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The persistence of chlorpyrifos in the cured tobacco leaves was studied following foliar applications of chlorpyrifos(40 EC)@ 64 g ai ha~(-1).The levels of chlorpyrifos residue in cured tobacco leaves increased with increase in the number of foliar applications of chlorpyrifos and pickings performed with closer interval of application.The residues of chlorpyrifos in cured tobacco leaves persisted beyond 47 days for single spray,33 days for two sprays,12 days after three sprays of tobacco planting.However,no residues of chlorpyrifos were detected(< 0.005 mu g g~(-1))in the fifth picking except fourth treatment(0.095 mu g g~1).The level of chlorpyrifos residues in cured tobacco leaves collected from different auction platforms of Karnataka was below detectable(< 0.01 mu g g~(-1)).
机译:叶面施用毒死rif(40 EC)@ 64 g ai ha〜(-1)后,研究了毒死rif在烟叶中的持久性。随着叶面施用次数的增加,烟叶中毒死residue残留量增加。毒死rif和采摘的间隔时间更短。烤烟叶片中毒死rif的残留持续超过47天(单次喷雾),33天(两次喷雾),烟草种植三次喷雾后12天(但是未检测到毒死rif残留)(除第四次处理(0.095 mu gg〜1)外,第五次采摘中<0.005 mu gg〜(-1))。从卡纳塔克邦不同拍卖平台收集的腌制烟叶中毒死rif残留量低于可检测的(<0.01 mu gg〜 (-1))。

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