The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
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Reduction Effects of Residual Pesticides using the Eco-friendly Soil Amendments in Agricultural Soil

환경친화적 토양개량제의 농경지 중 잔류농약 경감효과

  • Lee, Hyo Sub (Chemical Safety Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Hong, Su Myeong (Chemical Safety Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Kim, Taek Kyum (Research Policy Bureau, Rural Development Administration) ;
  • Kwon, Hye Young (Chemical Safety Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Kim, Dan Bi (Chemical Safety Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Moon, Byeong Chul (Chemical Safety Division, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Moon, Joon Kwan (Department of Plant Life and Environmental Sciences, Hankyong National University)
  • 이효섭 (농촌진흥청 국립농업과학원 화학물질안전과) ;
  • 홍수명 (농촌진흥청 국립농업과학원 화학물질안전과) ;
  • 김택겸 (농촌진흥청 연구정책국) ;
  • 권혜영 (농촌진흥청 국립농업과학원 화학물질안전과) ;
  • 김단비 (농촌진흥청 국립농업과학원 화학물질안전과) ;
  • 문병철 (농촌진흥청 국립농업과학원 화학물질안전과) ;
  • 문준관 (한경대학교 식물생명환경과학과)
  • Received : 2016.10.12
  • Accepted : 2016.11.25
  • Published : 2016.12.31
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Abstract

This study investigated the reduction of residual pesticide in soil by using eight kinds of soil amendments such as shell, quick lime, dolomite, silicic acid, leaf mold, oil cake, bed soil and husk. A total of ten pesticides most frequently detected in agricultural soil were selected (azoxystrobin etc.) and soil amendments were treated in soils at a 2% application rate and incubated for 7 days. Pesticides were analyzed by HPLC-MS/MS with QuEChERS-based sample preparation procedure and pH was measured on 1, 3 and 7 days. This study showed that, soil amemdments were effective in reducing pesticides after 7days of incubation. Over 90% of azoxystrobin, cadusafos, chlorpyrifos, fluquinconazole, imidacloprid, isoprothiolane and procymidone were decomposed from soils amended with 2% quick lime, whereas the concentration of boscalid, dimethomorph and triycyclazole were not decreased. The soil pH increased to 12.8-12.9 in soil amended with quick lime, but other soil conditioners did not change the soil pH. Quick lime was particularly effective in reducing residual pesticides.

토양 중 잔류농약 관리방안을 위해서 8종의 토양개량제(패화석, 생석회, 석회고토, 규산질비료, 부엽토, 유박, 상토, 왕겨숯)를 이용하여 토양 중 잔류농약 경감효과를 조사하였다. 실험방법은 토양에 0.1 mg/kg 수준으로 농약을 첨가한 후 토양개량제를 토양무게의 2% 수준으로 처리하고 7일 동안 상온보관 후 잔류농약 경감효과를 확인하였다. 잔류량 분석은 QuEChERS 전처리법과 HPLC-MS/MS를 이용하였고, 추가적으로 pH에 따른 토양 중 잔류농약 경감효과를 확인하기 위해 0, 1, 3, 7일의 pH를 측정하였다. 이에 따라, 2% 생석회를 투입한 토양에서는 boscalid, dimethomorph 및 tricyclazole을 제외한 azoxystrobin 등 7종의 농약이 95% 이상 경감되는 효과를 나타냈다. 또한 토양개량제 투입에 따른 토양 pH는 생석회를 첨가한 토양에서 pH 12.8 수준으로 가장 높은 증가를 나타냈다.

Keywords

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