Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Uptake and Translocation of Ethoprophos Mixed with Soil for Cultivation of Preceding Crop into Succeeding Crop

전작물 재배를 위해 토양에 혼화처리된 Ethoprophos의 후작물 흡수이행

  • Kwak, Se-Yeon (Major in Environment and Life Chemistry, School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Lee, Sang-Hyeob (Major in Environment and Life Chemistry, School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Kim, Hyo-Young (Safety Analysis Division, Experiment Research Institute, National Agricultural Products Quality Management Service) ;
  • Shin, Byung-Gon (Safety Analysis Division, Experiment Research Institute, National Agricultural Products Quality Management Service) ;
  • Kim, Jang-Eok (Major in Environment and Life Chemistry, School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University)
  • 곽세연 (경북대학교 농업생명과학대학 응용생명과학부 환경생명화학전공) ;
  • 이상협 (경북대학교 농업생명과학대학 응용생명과학부 환경생명화학전공) ;
  • 김효영 (국립농산물품질관리원 시험연구소 안전성분석과) ;
  • 신병곤 (국립농산물품질관리원 시험연구소 안전성분석과) ;
  • 김장억 (경북대학교 농업생명과학대학 응용생명과학부 환경생명화학전공)
  • Received : 2021.05.31
  • Accepted : 2021.06.17
  • Published : 2021.06.30
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Abstract

BACKGROUND: Unintentional residual pesticide in soil derived from preceding crops and the transfer to succeeding crops was considered a critical barrier for positive list system (PLS). Thus, an uncertain risk is predicted for ethoprophos applied at cultivation of preceding crop (Korean cabbage) to succeeding crop (spinach). METHODS AND RESULTS: Ethoprophos was treated on soil following the recommended dose and 5 times dose according to the safe use guidelines for Korean cabbage after seeding. On the 4 days after harvesting of preceding crop, spinach was sowed. The initial residual amounts of ethoprophos on soil (7.081-19.493 mg/kg) were decreased to 3.832-7.218 mg/kg until the harvest of Korean cabbage, and then finally decreased to 0.011-0.079 mg/kg after spinach cultivation. The uptake rates of ethoprophos from soil by Korean cabbage were 0.01-0.03% and distributed to root (0.150-0.903 mg/kg) and shoot (0.021-0.151 mg/kg), respectively. The residual amounts of uptake and translocation from preceding crop cultivated soil to spinach edible part were found to be below LOQ. CONCLUSION: The plant back internal (PBI) for ethoprophos is not recommended during sequential cultivation of leafy vegetables, since the residual amounts of ethoprophos in spinach were less than MRL (0.02 mg/kg).

Keywords

Acknowledgement

This work was supported by a grant from the National Agricultural Products Quality Management Service of Korea in 2019.

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