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http://dx.doi.org/10.7585/kjps.2014.18.2.61

Residual Patterns of Acaricides, Etoxazole and Flufenoxuron in Apples  

Hwang, Jeong-In (School of Applied Biosciences, Kyungpook National University)
Kim, Jang-Eok (School of Applied Biosciences, Kyungpook National University)
Publication Information
The Korean Journal of Pesticide Science / v.18, no.2, 2014 , pp. 61-68 More about this Journal
Abstract
Dissipation constants and half-lives of acaricides etoxazole and flufenoxuron in apples were calculated to establish their pre-harvest residue limits (PHRLs). The acaricides were sprayed on apples with single and triple doses based on safe use guidelines, and their residual patterns in the apple were interpreted using first order kinetics equation. The residual amounts of acaricides during the experimental period were below their maximum residue limits (MRL) for apple. The dissipation constants of acaricides in the apples were calculated at 0.0788 for etoxazole and 0.0319 for flufenoxuron corresponding to their biological half-lives; 8.8~21.7 days for etoxazole and 21.7~23.1 days for flufenoxuron. The PHRLs of acaricides in the apple showed the residual amounts of etoxazole and flufenoxuron at the harvesting date would be below their MRLs if their residual amounts were less than 0.87 and 0.88 mg/kg, respectively, at 7 days prior to harvesting the apples.
Keywords
apple; biological half-life; dissipation constant; etoxazole; flufenoxuron;
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Times Cited By KSCI : 16  (Citation Analysis)
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