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손경애(Kyeong-Ae Son),권혜영(Hyeyoung Kwon),진용덕(Yong-Duk Jin),박병준(Byeong Jun Park),김진배(Jinba Kim),박정훤(Jung-Hwon Park),김택겸(Taek-Kyum Kim),임건재(Geon-Jae Im),이기운(Key-woon Lee) 한국농약과학회 2013 농약과학회지 Vol.17 No.3
Flonicamid was a water-soluble and systemic insecticide. It was applied to control neonicotinod pesticide-resistant cotton aphid in sweet peppers. However, the residue levels of total flonicamid in sweet pepper exported to Japan in 2009 were exceeded the maximum residue limit (MRL). This study was conducted to elucidate residual properties of flonicamid parent compound and its metabolites in sweet peppers. It was carried out to compare the variation of residues in sweet pepper in three different greenhouses for 21 days after 3 times application with 7 days interval. The mean residues were 0.176, 0.152 and 0.108 mg kg<SUP>-1</SUP> and the residue levels in sweet pepper among three greenhouses show significant difference. The maximum residue levels were detected 10 days later after last treatments. The overall residue levels were lower than MRL 2.0 mg kg<SUP>-1</SUP> (by Korea) and 0.4 mg kg<SUP>-1</SUP> (by Japan in 2009 but now revised MRL is 2.0 mg kg<SUP>-1</SUP>). But the residue level of total flonicamid at the 21th day after 3 times treatment with 7 days interval was 0.429 mg kg.1 restricted by the application of double rate than recommended rate. The amounts of metabolites, TFNA, 4-Trifluoro methyl nicotinic acid and TFNG, N-(4-trifluoro methyl nicotinoyl) glycine were increased while flonicamid parent compound was decreased over time. Therefore the longer trial period should be needed for flonicamid in sweet peppers.