Dissipation Pattern of Boscalid in Cucumber under Greenhouse Condition

시설 내 오이 재배 중 살균제 Boscalid의 잔류특성

  • Lee, Jong-Hwa (Department of Agricultural Biotechnology, Seoul National University) ;
  • Park, Hee-Won (Department of Agricultural Biotechnology, Seoul National University) ;
  • Keum, Young-Soo (Department of Agricultural Biotechnology, Seoul National University) ;
  • Kwon, Chan-Hyeok (Korea Food and Drug Administration) ;
  • Lee, Young-Deuk (Division of Life and Environmental Science, Daegu University) ;
  • Kim, Jeong-Han (Department of Agricultural Biotechnology, Seoul National University)
  • 이종화 (서울대학교 농생명공학부) ;
  • 박희원 (서울대학교 농생명공학부) ;
  • 금영수 (서울대학교 농생명공학부) ;
  • 권찬혁 (식품의약품안전청 식품평가부) ;
  • 이영득 (대구대학교 생명환경학부) ;
  • 김정한 (서울대학교 농생명공학부)
  • Published : 2008.03.31


The dissipation patterns of a boscalid in cucumber under greenhouse condition was investigated to establish pre-harvest residue limit (PHRL) and biological half-life. Initial concentration of boscalid in cucumber at standard application rate was $7.29\;mg\;kg^{-1}$ and decreased to $0.04\;mg\;kg^{-1}$ after 15 days with half-life of 1.9 day, while the initial concentration was $14.69\;mg\;kg^{-1}$ and decreased to $0.11\;mg\;kg^{-1}$ after same period with half lift of 2.0 day at double application rate. PHRL was suggested by prediction curve derived from the decay curve of boscalid at double rate treatment. For example, $10.39\;mg\;kg^{-1}$ was calculated for 10 days before harvest, and $1.73\;mg\;kg^{-1}$ for 5 days. Dilution effect was major factor far the decrease of boscalid residue due to fast increasement of weight of cucumber during cultivation. Final residues level of boscalid was predicted based on the dissipation curve and guideline on safe use, when boscalid was used to control powdery mildew and gray mold. At standard rate application, $1.26\;mg\;kg^{-1}$ and $1.33\;mg\;kg^{-1}$ were calculated as final residue levels for control powdery mildew and gray mold, respectively, which are above the MRL(Meximum Residue Limit).


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