식물후방식재기간(PBI) 시험에 기반한 살균제 Azoxystrobin의 알타리무 중 잔류량 평가
Evaluation of Residues of Fungicide Azoxystrobin in Radish based on Plant Back Interval Experiment
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BACKGROUND: The pesticide residue in rotational crop is one of the main concerns to agricultural products be-cause it has the potentiality of violating positive list sys-tem (PLS). Thus, the crops used for the rotational cultivation should be considered the pesticide residue patterns to meet the PLS guideline. In this study, we evaluated the residue patterns of fungicide azoxystrobin in radish based on plant back interval (PBI) experiment. METHODS AND RESULTS: Azoxystrobin was treated onto greenhouse soil at 217 g a.i./10a in two different re-gions. Radishes were sown onto the soil 30 and 60 days af-ter azoxystrobin treatment. The soil and plant samples were subjected to a modified QuEChERS method and LC/MS/ MS analyses to determine the residues of azoxystrobin. The methods were validated to meet the guidelines of the pes-ticide residue analysis recommended by the Rural Deve-lopment Administration, Republic of Korea. Azoxystrobin was dissipated significantly in soil during the experimen-tal period and found as a level less than 0.01 mg/kg in radish 30 and 60 days after treatment. Azoxystrobin residues in radish samples were lower than the maximum residue limit (MRL) for root vegetables. CONCLUSION(S): This study suggests 30 days as a PBI for rotational cultivation of radish in greenhouse soil that had been treated with azoxystrobin at a level of 217 g a.i./10a.
Abstract
BACKGROUND: The pesticide residue in rotational crop is one of the main concerns to agricultural products be-cause it has the potentiality of violating positive list sys-tem (PLS). Thus, the crops used for the rotational cultivation should be considered the pesticide residue patterns to meet the PLS guideline. In this study, we evaluated the residue patterns of fungicide azoxystrobin in radish based on plant back interval (PBI) experiment. METHODS AND RESULTS: Azoxystrobin was treated onto greenhouse soil at 217 g a.i./10a in two different re-gions. Radishes were sown onto the soil 30 and 60 days af-ter azoxystrobin treatment. The soil and plant samples were subjected to a modified QuEChERS method and LC/MS/ MS analyses to determine the residues of azoxystrobin. The methods were validated to meet the guidelines of the pes-ticide residue analysis recommended by the Rural Deve-lopment Administration, Republic of Korea. Azoxystrobin was dissipated significantly in soil during the experimen-tal period and found as a level less than 0.01 mg/kg in radish 30 and 60 days after treatment. Azoxystrobin residues in radish samples were lower than the maximum residue limit (MRL) for root vegetables. CONCLUSION(S): This study suggests 30 days as a PBI for rotational cultivation of radish in greenhouse soil that had been treated with azoxystrobin at a level of 217 g a.i./10a.
참고문헌 (20)
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