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. 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%).
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Kang et al. (2016) studied this question.
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