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Residual Characteristics of Insecticide Acetamiprid in Asparagus under Greenhouse Condition

시설재배 아스파라거스 중 살충제 acetamiprid의 잔류특성

  • Kim, Jiwon (Department of Biotechnology, College of Applied Life Science (SARI), Jeju National University) ;
  • Lee, Jungmin (Department of Biotechnology, College of Applied Life Science (SARI), Jeju National University) ;
  • Lee, Doseung (Jeju Biodiversity Research Institute (JBRI)) ;
  • Kang, Seungtae (Department of Biotechnology, College of Applied Life Science (SARI), Jeju National University) ;
  • Kim, Dae-Woon (National Agricultural Products Quality Management Service, Jeju Provincial Office) ;
  • Lee, Dong-Sun (Department of Biotechnology, College of Applied Life Science (SARI), Jeju National University) ;
  • Riu, Key-Zung (Department of Biotechnology, College of Applied Life Science (SARI), Jeju National University) ;
  • Boo, Kyung Hwan (Department of Biotechnology, College of Applied Life Science (SARI), Jeju National University)
  • 김지원 (제주대학교 생명공학부) ;
  • 이정민 (제주대학교 생명공학부) ;
  • 이도승 (제주테크노파크 생물종다양성연구소) ;
  • 강승태 (제주대학교 생명공학부) ;
  • 김대운 (국립농산물품질관리원 제주지원) ;
  • 이동선 (제주대학교 생명공학부) ;
  • 류기중 (제주대학교 생명공학부) ;
  • 부경환 (제주대학교 생명공학부)
  • Received : 2015.06.02
  • Accepted : 2015.08.07
  • Published : 2015.09.30

Abstract

This study was carried out to investigate residual characteristics of insecticide acetamiprid in asparagus under greenhouse condition from July to August and consequentially to obtain basic data for guideline on safe use of this pesticide in asparagus. Residues of acetamiprid in young stem of asparagus before and after removing foliage were analyzed from samples harvested at 0, 1, 3, 5 and 7 days after single application before harvest. As a result, residues of acetamiprid in young stem of asparagus before and after removing foliage at 0 day were 0.27 mg/kg and 0.14 mg/kg, respectively, which were higher than tentative limit (0.1 mg/kg). However, 3 days later residues of acetamiprid were lower than the tentative limit, representing 0.08 mg/kg and 0.03 mg/kg in the asparagus before and after removing foliage, respectively. Acetamiprid was undetectable in both samples at 5 days since the concentrations were less than detection limit (0.02 mg/kg) in this study. In summary, the half-life of acetamiprid in asparagus regardless of removing foliage was quite short under greenhouse condition from July to August, in the range of 1-3 days, and single application of acetamiprid water dispersible granule in/on asparagus at 7 days before harvest would have no problem on safety issues about pesticide residue. This result might be basic information to construct guideline for safe use of acetamiprid in asparagus.

본 연구는 시설재배 아스파라거스를 대상으로 acetamiprid 입상수화제의 잔류특성을 규명하고 그에 따른 안전사용기준 설정의 기초자료를 확보하고자 수행하였다. Acetamiprid의 잔류량은 7-8월 시설재배지의 아스파라거스를 입경 전과 후 상태가 되도록 제작하고 수확 7일전 1회 살포하여 1-2일 간격으로 5회에 거쳐 어린 줄기를 수확한 후 분석하였다. 그 결과, 입경 전과 후 아스파라거스 모두에서 살포당일 acetamiprid의 잔류량은 0.27 mg/kg과 0.14 mg/kg으로 적용되는 최저 잔류허용기준인 0.1 mg/kg 보다 높은 것으로 확인되었으나, 3일이 경과하였을 때는 잔류허용기준 보다 낮은 0.08 mg/kg과 0.03 mg/kg 수준임을 확인할 수 있었다. 그리고 살포 후 5일이 경과하였을 때는 입경 전과 후 아스파라거스 모두에서 본 연구의 acetamiprid 정량한계인 0.02 mg/kg 보다 낮아져 검출이 되지 않았다. 이러한 결과로 미루어볼 때 7-8월 시설재배지의 아스파라거스에서 acetamiprid 반감기는 입경과 무관하게 1-3일 정도로 짧음을 알 수 있었다. 따라서 acetamiprid 입상수화제를 7-8월 시설재배지의 아스파라거스에 수확 7일전에 1회 살포하는 것은 아스파라거스의 농약잔류 안전성에 문제가 되지 않을 것으로 판단하였으며, 본 연구결과는 아스파라거스에 대한 acetamiprid의 안전사용기준을 설정하는데 중요한 기초자료가 될 것으로 사료된다.

Keywords

References

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