The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
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Residual Patterns of Fungicides Fludioxonil and Metconazole in Different Parts of Wheat

살균제 Fludioxonil 및 Metconazole의 밀 부위별 잔류 양상

  • Kang, Ja-Gun (School of Applied Biosciences, Kyungpook National University) ;
  • Hwang, Jeong-In (School of Applied Biosciences, Kyungpook National University) ;
  • Lee, Sang-Hyeob (School of Applied Biosciences, Kyungpook National University) ;
  • Jeon, Sang-Oh (School of Applied Biosciences, Kyungpook National University) ;
  • Kwak, Se-Yeon (School of Applied Biosciences, Kyungpook National University) ;
  • Park, Jun-Hong (Gyeongsangbukdo Agricultural Research and Extention Services) ;
  • Kim, Jang-Eok (School of Applied Biosciences, Kyungpook National University)
  • 강자군 (경북대학교 농업생명과학대학 응용생명과학부) ;
  • 황정인 (경북대학교 농업생명과학대학 응용생명과학부) ;
  • 이상협 (경북대학교 농업생명과학대학 응용생명과학부) ;
  • 전상오 (경북대학교 농업생명과학대학 응용생명과학부) ;
  • 곽세연 (경북대학교 농업생명과학대학 응용생명과학부) ;
  • 박준홍 (경상북도 농업기술원 농업환경연구과) ;
  • 김장억 (경북대학교 농업생명과학대학 응용생명과학부)
  • Received : 2016.11.03
  • Accepted : 2016.11.29
  • Published : 2016.12.31
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Abstract

Residual patterns of fungicides fludioxonil and metconazole applied 2 or 3 times on wheat were investigated with consideration for their distribution rates in each compartment of wheat. Wheat samples collected at harvesting day were divided into three compartments such as grain, hull and straw, and the pesticide residue analysis was individually carried out to such compartments of wheat. The analytical methods of fungicide residues in wheat were acceptable, with recoveries of 84.3 to 113.3% and correlation coefficients of 0.1 to 4.7%. Due to the systemic characteristics, the residual amounts of metconazole in the grain part of wheat were greater as 0.13~0.17 mg/kg than those amounts (0.01-0.03 mg/kg) for fludioxonil. To absolute residue amounts of the fungicides in one wheat plant, their distribution rates in each compartment of wheat were the highest in straws (68.5-70.7%), followed by hulls (29.0-31.0%) and grains (0.2-0.8%).

밀의 재배기간 중 살포된 살균제 fludioxonil 및 metconazole의 부위별 잔류양상을 조사하였다. 밀 부위별 fludioxonil 및 metconazole (cis 및 trans 이성질체의 합)의 잔류분석 회수율은 84.3~113.3%이었으며 변이계수는 0.1~4.7%로 나타나 잔류농약분석 기준을 만족하였다. 두 농약 모두 처리구별 수확된 밀의 짚부위에 가장 많이 잔류되었으며 가식부인 밀알에서 잔류량이 가장 적었다. 밀의 가식부에 잔류하는 농약의 농도는 fludioxonil은 2회 및 3회 살포시 0.01~0.07 mg/kg, metconazole은 0.13~0.17 mg/kg로 나타났다. 침투성 농약인 metconazole은 fludioxonil 보다 더 낮은 농도로 살포되었음에도 불구하고 밀의 가식부로 침투량이 더 많았으며 cis 이성질체가 trans 이성질체 보다 많이 잔류되었다. 밀의 각 부위별 평균무게를 이용하여 밀 한 개체 당 농약의 잔류절대량을 산출하고 밀의 각 부위별 분포율을 산출한 결과, 두 농약 모두 짚 부위에서 68.5~70.7%의 분포율을 나타내었으며 가식부에서 분포율은 0.8% 미만이었다.

Keywords

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