시설 내 오이 재배 중 살균제 Boscalid의 잔류특성 (Dissipation Pattern of Boscalid in Cucumber under Greenhouse Condition)

서지정보

· 발행기관 : 한국농약과학회
· 수록지 정보 : 농약과학회지 / 12권 / 1호 / 67 ~ 73페이지
· 저자명 : 이종화, 이영득, 김정한, 박희원, 금영수, 권찬혁

초록

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 life 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 for 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).

영어초록

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 life 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 for 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).

참고자료

· 없음