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http://dx.doi.org/10.5338/KJEA.2012.31.3.271

Establishment of Pre-Harvest Residue Limits (PHRLs) of Insecticide Clothianidin and Fungicide Fluquinconazole on Peaches during Cultivation Period  

Park, Jae-Hun (Department of Biological Environment and Chemistry, Chungnam National University)
Lim, Jong-Sung (Reserch Center, Sungbo Chemicals Co. Ltd.)
Yoon, Ji-Yeong (Department of Biological Environment and Chemistry, Chungnam National University)
Moon, Hye-Ree (Department of Biological Environment and Chemistry, Chungnam National University)
Han, Ye-Hoon (Syngenta Korea Ltd.)
Lee, Yong-Jae (Korea Ginseng Corp. Safety Research Center)
Lee, Kyu-Seung (Department of Biological Environment and Chemistry, Chungnam National University)
Publication Information
Korean Journal of Environmental Agriculture / v.31, no.3, 2012 , pp. 271-276 More about this Journal
Abstract
BACKGROUND: It is hard to control the agricultural products exceeding MRL (maximum residue limit) before forwarding. Therefore, NAQS (National Agricultural Products Quality Management Service, South Korea) established PHRL (pre-harvest residue limit) on agricultural products during their cultivation periods. This study was performed to set the PHRLs of peach during cultivation period, and also to estimate biological half-lives for residues of clothianidin and fluquinconazole. METHODS AND RESULTS: Two groups of peach were treated under Korean GAP (Good Agricultural Practices) with application time, single and triple treatments. Sample was collected over 14days (each after 0, 2, 4, 6, 8, 10, 12, 14 days. 8times), and clothianidin and fluquinconazole were analyzed by HPLC/DAD and GC/ECD, respectively. CONCLUSION: The biological half-life of clothianidin in single treatment and triple treatment was 5.2days and 7.0days. That of fluquinconazole was also 3.9days and 4.1days, respectively. The PHRL of peach on 10days before harvest was 1.4 mg/kg in clothianidin and 1.8 mg/kg in fluquinconazole.
Keywords
Biological half-life; Clothianidin; Cultivation period; Fluquinconazole; Pre-harvest residue limit (PHRL);
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Times Cited By KSCI : 4  (Citation Analysis)
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