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Featured researches published by Kyeong-Seok Oh.


The Korean Journal of Pesticide Science | 2017

Uptake and Translocation of the Soil Residual Pesticides into the Vegetable Crop

Sang-Won Park; Ji-Hyock Yoo; Kyeong-Seok Oh; Byung-Jun Park; Sang-Su Kim; Kyong-Mi Chon; Hyeyoung Kwon; Su-Myoung Hong; Beyeong-Chul Moon; Hoon Choi

토양 중 잔류농약의 작물에 대한 흡수이행 평가 및 잔류허용기준 초과 가능성을 구명하기 위하여 지난 10여 년간 농경지 토양 중 잔류농약 모니터링 결과 검출빈도와 검출농도가 높은 살충제 endosulfan, chlorfenapyr, chlorpyrifos, ethoprofos와 살균제 isoprothiolane, procymidone, fthalide 등 7종을 선발하고, 이들 농약을 토양에 혼화 처리 후 포트 및 포장에서 토양 중 잔류농도의 변화를 조사하였다. 또한 시험약제가 처리된 토양에 엽채류(배추, 상추, 시금치), 근채류(무, 감자, 당근) 및 과채류(오이, 고추, 가지, 토마토) 채소 등을 재배하여 수확기 토양중 잔류농약의 작물체로의 흡수이행 정도를 조사하였다. 포트에서 양토중 엽채류의 잔류농약 흡수비는 ethoprophos > chlorpyrifos ≥ endosulfan > fthalide 순으로 낮았으며, 사양토에서는 ethoprophos > endosulfan ≥ chlorpyrifos > fthalide 순이었다. 작물별 토양 중 잔류농약 흡수는 대체로 배추 >시금치 >상추 순으로 적었다. 노지 근채류 채소 재배지 토양중 잔류농약의 반감기는 양토에서 chlorfenapyr (13일) 고추 >가지 >토마토 순으로 높았다. 또한, 과채류 채소 재배지 토양에 시험약제들을 20 mg/kg 수준까지 처리하였을 때 수확기 과채류 중 농약은 잔류허용기준 (MRL)의 1/5~1/10 수준이었으나 endosulfan은 과채류에도 흡수·이행이 잘되어 재배조건에 따라 잔류허용기준을 초과할 가능성이 있을 것으로 판단되므로 주의 할 필요가 있다.


Korean Journal of Soil Science and Fertilizer | 2017

Determination of Bioconcentration Factor of Heavy Metal (loid)s in Rice Grown on Soils Vulnerable to Heavy Metal (loid)s Contamination

Seul Lee; Dae-Won Kang; Ji-Hyock Yoo; Sang-Won Park; Kyeong-Seok Oh; Jinho Lee; Il Kyu Cho; Byeong-Churl Moon; Won-Il Kim

Received: February 9, 2017 Revised: May 2, 2017 Accepted: May 4, 2017 There is an increasing concern over heavy metal (loid) contamination of soil in agricultural areas including paddy soils. This study was conducted to determine the bioconcentration factor (BCF) for heavy metal (loid)s to brown rice grown in paddy soils vulnerable to heavy metal (loid)s contamination, for the quantitative health risk assessment to the residents living nearby the metal contaminated regions. The samples were collected from 98 sites nationwide in the year 2015. The mean and range BCF values of As, Cd, Cu, Ni, Pb, and Zn in brown rice were 0.027 (0.001 ~ 0.224), 0.143 (0.001 ~ 2.434), 0.165 (0.039 ~ 0.819), 0.028 (0.005 ~ 0.187), 0.006 (0.001 ~ 0.048), and 0.355 (0.113 ~ 1.263), respectively, with Zn showing the highest. Even though the relationship between heavy metal (loid) contents in the vulnerable soils and metal contents in brown rice collected at the same fields was not significantly correlated, the relationship between log contents of heavy metal(loid)s in the vulnerable soils and BCF of brown rice wes significantly correlated with As, Cd, Cu, and Zn in rice. In conclusion, soil environmental risk assessment for crop uptake should consider the bioconcentration factor calculated using both the initial and vulnerable heavy metal (loid) contents in the required soil and the crop cultivated in the same fields.


The Korean Journal of Pesticide Science | 2006

Residual Characteristics of some Pesticides in/on Pepper Fruits and Leaves by Different Types, Growing and Processing Conditions

Hee-Dong Lee; Oh-Jong You; Yang-Bin Ihm; Hyeyoung Kwon; Yong-Duk Jin; Jin-Bae Kim; Yun-Han Kim; Seung-Soon Park; Kyeong-Seok Oh; Sung-Lim Ko; Tae-Hwa Kim; Jae-Goan Noh; Kee-Sung Kyung


The Korean Journal of Pesticide Science | 2003

Survey of Pesticide Usage on Fruits in Korea

Yang-Bin Ihm; Kyoung-Sun Kim; Kee-Sung Kyung; Nam-Suk Kim; Huen-Young Ha; Hee-Dong Lee; Kyeong-Seok Oh; Jung-Won Kim; Gab-Hee Ryu


Archive | 1997

Pesticide formulation for controlled release

Sung-Ho Baek; Hyo-Yeul Kim; Young-Koo Kim; Bon-Cheol Ku; Byung-Youl Oh; Kyeong-Seok Oh; Seung-Soon Park; Kun-Sang Yoon


The Korean Journal of Pesticide Science | 2003

Survey on pesticide usage for the development of pesticide use indicator in fruit vegetables

Kyeong-Seok Oh; Yang-Bin Ihm; Hong-Kyu Oh; Byung-Moo Lee; Kee-Sung Kyung; Nam-Sook Kim; Baek-Youn Kim; Jeong-Won Kim; Gap-Hee Ryu


The Korean Journal of Pesticide Science | 2003

The Environmental Impact Quotient on Fruit and Vegetables Pesticides in Korea

Kyeong-Seok Oh; Byung-Moo Lee; Ha-Jung Sung; Hong-Gyu Oh; Yang-Bin Ihm; Kee-Sung Kyung


The Korean Journal of Pesticide Science | 2002

Control of Phythophthora capsici and residual characteristics by drenching of pesticides on tomato in hydroponic culture system

Yang-Bin Ihm; Jung-Sup Lee; Kee-Sung Kyung; Chan-Sub Kim; Kyeong-Seok Oh; Yong-Duk Jin; Byung-Moo Lee


한국토양비료학회 학술발표회 초록집 | 2005

Bioavailability of Soil-aged Residues of the Herbicide Pretilachlor to Rice Plants

Kee Sung Kyung; Ki Chang Ahn; Jeong Wook Kwon; Dae Kyu Kim; Eun Young Lee; Hong Young Kim; In Young Park; Yang Bin Ihm; Yong Duk Jin; Kyeong-Seok Oh; Jae-Koo Lee


The Korean Journal of Pesticide Science | 2000

Monitoring of hexachlorobenzene (HCB) contents as an impurity in different sources of chlorothalonil technical

Jeong-Gu Kim; Wook-Cheol Shin; Hong-Goun Lee; Seung-Soon Park; Kyeong-Seok Oh; Jin-Bok Joo; Byung-Youl Oh

Collaboration


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Byung-Youl Oh

Rural Development Administration

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Seung-Soon Park

Rural Development Administration

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Jae-Koo Lee

Chungbuk National University

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Kee-Sung Kyung

Chungbuk National University

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Hyeyoung Kwon

Rural Development Administration

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Ji-Hyock Yoo

Rural Development Administration

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Young-Koo Kim

Rural Development Administration

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Bon-Cheol Ku

Rural Development Administration

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Byung-Jun Park

Rural Development Administration

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