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영농지역에서 작물재배 형태에 따른 농약의 잔류성과 유출특성
박병준 ( Byung Jun Park ),권오경 ( Oh Kyung Kwon ),김진경 ( Jin Kyoung Kim ),김진배 ( Jin Bea Kim ),김진호 ( Jin Ho Kim ),윤순강 ( Soon Kang Yoon ),심재한 ( Jae Han Shim ),홍무기 ( Moo Gi Hong ) 한국환경농학회 2009 한국환경농학회지 Vol.28 No.2
To evaluate the exposure of non-point source pesticide pollution in agricultural watershed and to investigate pesticide distribution and runoff from agricultural land, paddy field, upland and orchard, this experiment was carry out during crop growing seasons. The pesticide were detected twenty pesticides (fungicide 4, insecticide 10, herbicide 6) in water of Neungchon agricultural watershed and detection concentrations were range 0.008~7.59 ppb. Most of the detection pesticides were using pesticides to rice paddy fields to control fungi, insects, weeds. During the crop cultivation, the pesticide were detected total thirty pesticides by pepper field soil 6, orchard soil 4, sesame field soil 3 and rice paddy field soil 5, and pesticide concentrations were range 0.001~0.109 ppm. Especially the herbicides were detected mainly in May and June in the stream water. The pesticide were detected thirty pesticides by fungicide 2, insecticide 6, herbicide 5 in water of Jungam Koseong agricultural watershed and detection concentrations were range 0.01~7.21 ppb. In regard to the detected pesticides, the concentration of individual pesticides measured in surface water of the study areas never exceeded guidelines for agriculture chemicals concerning water quality-effluent from paddy fields in Japan (Katayama, 2003). Runoff rate of pesticides was range 0.07~3.06 % from Kongju agricultural land to watershed after applied pesticides.