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박영선,홍종욱,이해근,Talekar, N S 한국환경농학회 1982 한국환경농학회지 Vol.1 No.2
배추中 cyanofenphos의 殘留消長을 栽培時期를 달리하여 調査하였다. 배추 移植後 22日과 36日에 cyanofenphos 25EC를 0.5와 0.75㎏ AI/㏊의 比率로 各各 撒布하고 最終撒布後 35日까지 殘留量을 調査한 結果, cyanofenphos의 分解樣相은 栽培時期와는 無關하게 兩藥量水準에서 비슷한 傾向을 보였다. 즉 最終撒布後 14日까지는 배추中 cyanofenphos가 急激히 減少하였으나 그 후로는 比較的 徐徐히 減少하였다. 배추中 cyanofenphos의 半減期는 6∼7日이었으며, 撤布時期와 撒布率에 따른 差異는 별로 없었다. 洋배추中 cyanofenphos의 殘留許容量인 2ppm을 基準하여 볼때, 收穫前 撒布日은 0.5와 0.75㎏ AI/㏊에서 各各 16, 17日로 추정된다. Persistence of cyanofenphos on Chinese cabbage under the different climate conditions was studied by spraying the insecticide at the rate of 0.5 and 0.75 ㎏ AI/ha at 22 and 36 days after transplanting and monitoring its residues upto 35 days after the final spray. At both spraying rates the degradation patterns of the insecticide, regardless of climate condition, showed similar trends; cyanofenphos residues on Chinese cabbage declined rapidly upto 14 days after the final spray but more slowly thereafter. Half-life for cyanofenphos on Chinese cabbage was 6∼7 days. The half-life was little affected by the spraying rate and time. Based on the FAO/WHO maximum residue limit of cyanofenphos on common cabbage (2 ppm), it is recommended that the pre-harvest intervels of the insecticide on Chinese cabbage could be 16 and 19 days for 0.5 and 0.75 ㎏ AI/ha, respectively.