비교란 Lysimeter를 활용한 논 토양에서의 살충제 Carbosulfan 용탈특성 구명

임성진 ( Sungjin Lim ),오영탁 ( Youngtak Oh ),김남희 ( Namhee Kim ),양지연 ( Jiyeon Yang ),최근형 ( Geunhyoung Choi ),류송희 ( Songhee Ryu ),문병철 ( Byeongchul Moon ),박병준 ( Byungjun Park ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-

This study was conducted to investigate the leaching characteristics of insecticide carbosulfan using undisturbed lysimeter. Soil horizons of sandy loam, loam, and silty clay loam lysimeter were composed of 6, 6, and 5, and clay contents were ranged from 53.1-63.2, 40.2-47.7, and 32.6-39.2 %, respectively. Bulk densities of each lysimeter were 1.38, 1.30, and 1.35 Mg/m3, respectively. Carbosulfan was treated to each lysimeter at 14 days after rice planting, and water was supplied according to rice cultivation method. Pore volumes of sandy loam, loam, and silty clay loam lysimeter were calculated to 718.9, 764.2, and 735.9 L, and pore volume numbers of supplied water for rice cultivation were 2.1, 1.6, and 1.3, respectively. Movement of carbosulfan in each lysimeter was investigated through the residue of carbosulfan in 30, 55, 85, and 125 cm soil water from topsoil and leaching water. Liquid chromatography (LC)-mass spectrometry (MS)-MS was used for carbosulfan analysis in water sample. Recovery and limit of quantitation (LOQ) of carbosulfan in water were 101.1-106.4% and 50 ng/L. Changes of moisture tension, humidity, and temperature in sandy loam, loam, and silty clay loam lysimeter was not significantly different. Weight of silty clay loam lysimeter was higher than other lysimeter because of less leaching. Leaching volume decreased with increasing clay content of paddy soil, and the volume of sandy loam, loam, and silty clay loam lysimeter were 1964.7, 1868.4, and 1265.6 L, respectively. Total leaching content of carbosulfan (treatment content 1541 mg) during experiment period in sandy loam, loam, and silty clay loam lysimeter were 30.7, 19.4, 23.5 ng, respectively. The content in three lysimeter was not significantly different. However, carbosulfan in soil horizon of sandy loam, loam, and silty clay loam paddy soil were detected at 2222.1, 2146.0, and 166.3 ng, respectively. These results showed that the movement of carbosulfan in sandy loam, loam, and silty clay loam paddy soil was very low, and the movement in silt clay lam paddy soil was relatively lower than sandy loam and loam paddy soil.

비교란 Lysimeter를 활용한 논 토양에서의 살충제 Fenobucarb 용탈특성 구명

오영탁 ( Youngtak Oh ),임성진 ( Sungjin Lim ),김남희 ( Namhee Kim ),양지연 ( Jiyeon Yang ),최근형 ( Geunhyoung Choi ),류송희 ( Songhee Ryu ),문병철 ( Byeongchul Moon ),박병준 ( Byungjun Park ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-

This study was conducted to investigate the leaching characteristics of insecticide fenobucarb using undisturbed lysimeter. Soil horizons of sandy loam, loam, and silty clay loam lysimeter were composed of 6, 6, and 5, and clay contents were ranged from 53.1-63.2, 40.2-47.7, and 32.6-39.2 %, respectively. Bulk densities of each lysimeter were 1.38, 1.30, and 1.35 Mg/m3, respectively. Fenobucarb was treated to each lysimeter at 14 days after rice planting, and water was supplied according to rice cultivation method. Pore volumes of sandy loam, loam, and silty clay loam lysimeter were calculated to 718.9, 764.2, and 735.9 L, and pore volume numbers of supplied water for rice cultivation were 2.1, 1.6, and 1.3, respectively. Movement of fenobucarb in each lysimeter was investigated through the residue of fenobucarb in 30, 55, 85, and 125 cm soil water from topsoil and leaching water. Liquid chromatography (LC)-mass spectrometry (MS)-MS was used for fenobucarb analysis in water sample. Recovery and limit of quantitation (LOQ) of fenobucarb in water were 83.2-84.7% and 50 ng/L. Changes of moisture tension, humidity, and temperature in sandy loam, loam, and silty clay loam lysimeter was not significantly different. Weight of silty clay loam lysimeter was higher than other lysimeter because of less leaching. Leaching volume decreased with increasing clay content of paddy soil, and the volume of sandy loam, loam, and silty clay loam lysimeter were 1964.7, 1868.4, and 1265.6 L, respectively. Total leaching content of fenobucarb (treatment content 1541 mg) during experiment period in sandy loam, loam, and silty clay loam lysimeter were 9.6, 14.2, 21.7 μg, respectively. The content in three lysimeter was not significantly different. Fenobucarb in soil horizon of sandy loam, loam, and silty clay loam paddy soil were detected at 180.1, 54.5, and 0.4 μg, respectively. However, the most of fenobucarb in soil horizon and leaching water detected at the primary stage of experiment. These results showed that the movement of fenobucarb in sandy loam, loam, and silty clay loam paddy soil was very high.

비교란 Lysimeter를 활용한 밭 토양에서의 살균제 Flutolanil 용탈특성 구명

임성진 ( Sungjin Lim ),박정훤 ( Jeonghwon Park ),오영탁 ( Youngtak Oh ),주형곤 ( Hyeonggon Joo ),이민호 ( Minho Lee ),윤효인 ( Hyoin Yoon ),최근형 ( Geunhyoung Choi ),류송희 ( Songhee Ryu ),박병준 ( Byungjun Park ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-

This study was conducted to investigate the leaching characteristics of fungicide flutolanil in paddy soil using undisturbed lysimeter. Soil horizons of sandy loam, loam, and silty clay loam lysimeter were composed of 6, 6, and 5, and clay contents were ranged from 53.1-63.2, 40.2-47.7, and 32.6-39.2 %, respectively. Bulk densities of each lysimeter were 1.38, 1.30, and 1.35 Mg/m3, respectively. Flutolanil was treated to each lysimeter at 15 days after rice planting, and water was supplied according to rice cultivation method. Pore volumes of sandy loam, loam, and silty clay loam lysimeter were calculated to 718.87, 764.15, and 735.85 L, and pore volume numbers of supplied water for rice cultivation were 0.98, 1.08, and 0.24, respectively. Movement of flutolanil in each lysimeter was investigated through the residue of it in 30, 55, 85, and 125 cm soil water from topsoil and leaching water. Gas chromatography (GC) was used for flutolanil analysis in water sample. Recovery and limit of quantitation (LOQ) of flutolanil in water were 72.8-84.0% and 3 μg/L. Changes of moisture tension, humidity, and temperature in sandy loam, loam, and silty clay loam lysimeter was not significantly different during experiment period. Weight of silty clay loam lysimeter was higher than other lysimeter because of less leaching. Leaching volume of sandy loam, loam, and silty clay loam lysimeter were 705.9, 828.7, and 174.5 L, respectively. Total leaching content of flutolanil (treatment content 770.57 mg) during experiment period in sandy loam, loam, and silty clay loam lysimeter were 5.66, 15.76, and 21.05 mg, respectively. These results showed that the movement of flutolanil in sandy loam and silty clay loam paddy soil was high.

비교란 Lysimeter를 활용한 논 토양에서의 살충제 Chlorpyrifos-methyl의 용탈특성

오영탁 ( Youngtak Oh ),임성진 ( Sungjin Lim ),박정훤 ( Jeonghwon Park ),주형곤 ( Hyeonggon Joo ),이민호 ( Minho Lee ),윤효인 ( Hyoin Yoon ),최근형 ( Geunhyoung Choi ),류송희 ( Songhee Ryu ),박병준 ( Byungjun Park ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-

This study was conducted to investigate the leaching characteristics of insecticide chlorpyrifos-methyl in paddy soil using undisturbed lysimeter. Soil horizons of sandy loam, loam, and silty clay loam lysimeter were composed of 6, 6, and 5, and clay contents were ranged from 53.1-63.2, 40.2-47.7, and 32.6-39.2 %, respectively. Bulk densities of each lysimeter were 1.38, 1.30, and 1.35 Mg/m3, respectively. Chlropyrifos-methyl was treated to each lysimeter at 15 days after rice planting, and water was supplied according to rice cultivation method. Pore volumes of sandy loam, loam, and silty clay loam lysimeter were calculated to 718.87, 764.15, and 735.85 L, and pore volume numbers of supplied water for rice cultivation were 0.98, 1.08, and 0.24, respectively. Movement of chlorpyrifos-methyl in each lysimeter was investigated through the residue of it in 30, 55, 85, and 125 cm soil water from topsoil and leaching water. Gas chromatography (GC) was used for chlorpyrifos-methyl analysis in water sample. Recovery and limit of quantitation (LOQ) of chlorpyrifos-methyl in water were 112.1-115.5% and 3 μg/L. Changes of moisture tension, humidity, and temperature in sandy loam, loam, and silty clay loam lysimeter was not significantly different during experiment period. Weight of silty clay loam lysimeter was higher than other lysimeter because of less leaching. Leaching volume of sandy loam, loam, and silty clay loam lysimeter were 705.9, 828.7, and 174.5 L, respectively. Total leaching content of chlorpyrifos-methyl (treatment content 770.57 mg) during experiment period in sandy loam, loam, and silty clay loam lysimeter were 0, 0, and 0.03 mg, respectively. These results showed that the movement of chlorpyrifos-methyl in sandy loam, loam, and silty clay loam paddy soil was very low.

비교란 Lysimeter를 활용한 논 토양에서의 살충제 Tricyclazole의 용탈특성

주형곤 ( Hyeonggon Joo ),임성진 ( Sungjin Lim ),박정훤 ( Jeonghwon Park ),오영탁 ( Youngtak Oh ),이민호 ( Minho Lee ),윤효인 ( Hyoin Yoon ),최근형 ( Geunhyoung Choi ),류송희 ( Songhee Ryu ),박병준 ( Byungjun Park ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-

This study was conducted to investigate the leaching characteristics of insecticide tricyclazole in paddy soil using undisturbed lysimeter. Soil horizons of sandy loam, loam, and silty clay loam lysimeter were composed of 6, 6, and 5, and clay contents were ranged from 53.1-63.2, 40.2-47.7, and 32.6-39.2%, respectively. Bulk densities of each lysimeter were 1.38, 1.30, and 1.35 Mg/m³, respectively. Tricyclazole was treated to each lysimeter at 15 days after rice planting, and water was supplied according to rice cultivation method. Pore volumes of sandy loam, loam, and silty clay loam lysimeter were calculated to 718.87, 764.15, and 735.85 L, and pore volume numbers of supplied water for rice cultivation were 0.98, 1.08, and 0.24, respectively. Movement of tricyclazole in each lysimeter was investigated through the residue of it in 30, 55, 85, and 125 cm soil water from topsoil and leaching water. Gas chromatography (GC) was used for tricyclazole analysis in water sample. Recovery and limit of quantitation (LOQ) of tricyclazole in water were 107.9-114.9% and 3 μg/L. Changes of moisture tension, humidity, and temperature in sandy loam, loam, and silty clay loam lysimeter was not significantly different during experiment period. Weight of silty clay loam lysimeter was higher than other lysimeter because of less leaching. Leaching volume of sandy loam, loam, and silty clay loam lysimeter were 705.9, 828.7, and 174.5 L, respectively. Total leaching content of tricyclazole (treatment content 770.57 mg) during experiment period in sandy loam, loam, and silty clay loam lysimeter were 0, 12.37, and 13.72 mg, respectively. Most of leached tricyclazole were detected at early stage of experiment in loam and silty clay loam lysimeters. These results showed that the movement of tricyclazole in sandy loam, loam, and silty clay loam paddy soil was very high.

비교란 Lysimeter를 활용한 논 토양에서의 제초제 Butachlor의 용탈특성

박정훤 ( Jeonghwon Park ),임성진 ( Sungjin Lim ),오영탁 ( Youngtak Oh ),주형곤 ( Hyeonggon Joo ),이민호 ( Minho Lee ),윤효인 ( Hyoin Yoon ),최근형 ( Geunhyoung Choi ),류송희 ( Songhee Ryu ),박병준 ( Byungjun Park ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-

This study was conducted to investigate the leaching characteristics of herbicide butachlor in paddy soil using undisturbed lysimeter. Soil horizons of sandy loam, loam, and silty clay loam lysimeter were composed of 6, 6, and 5, and clay contents were ranged from 53.1-63.2, 40.2-47.7, and 32.6-39.2 %, respectively. Bulk densities of each lysimeter were 1.38, 1.30, and 1.35 Mg/m3, respectively. Butachlor was treated to each lysimeter at 15 days after rice planting, and water was supplied according to rice cultivation method. Pore volumes of sandy loam, loam, and silty clay loam lysimeter were calculated to 718.87, 764.15, and 735.85 L, and pore volume numbers of supplied water for rice cultivation were 0.98, 1.08, and 0.24, respectively. Movement of butachlor in each lysimeter was investigated through the residue of it in 30, 55, 85, and 125 cm soil water from topsoil and leaching water. Gas chromatography (GC) was used for butachlor analysis in water sample. Recovery and limit of quantitation (LOQ) of butachlor in water were 88.1-104.6% and 3 μg/L. Changes of moisture tension, humidity, and temperature in sandy loam, loam, and silty clay loam lysimeter was not significantly different during experiment period. Weight of silty clay loam lysimeter was higher than other lysimeter because of less leaching. Leaching volume of sandy loam, loam, and silty clay loam lysimeter were 705.9, 828.7, and 174.5 L, respectively. Total leaching content of butachlor (treatment content 770.57 mg) during experiment period in sandy loam, loam, and silty clay loam lysimeter were 0.01, 0, and 0.07 mg, respectively. These results showed that the movement of butachlor in sandy loam, loam, and silty clay loam paddy soil was low.

비교란 Lysimeter를 활용한 논 토양에서의 살균제 Pencycuron의 용탈특성

이민호 ( Minho Lee ),임성진 ( Sungjin Lim ),박정훤 ( Jeonghwon Park ),오영탁 ( Youngtak Oh ),주형곤 ( Hyeonggon Joo ),윤효인 ( Hyoin Yoon ),최근형 ( Geunhyoung Choi ),류송희 ( Songhee Ryu ),박병준 ( Byungjun Park ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-

This study was conducted to investigate the leaching characteristics of fungicide pencycuron in paddy soil using undisturbed lysimeter. Soil horizons of sandy loam, loam, and silty clay loam lysimeter were composed of 6, 6, and 5, and clay contents were ranged from 53.1-63.2, 40.2-47.7, and 32.6-39.2 %, respectively. Bulk densities of each lysimeter were 1.38, 1.30, and 1.35 Mg/m³, respectively. Pencycuron was treated to each lysimeter at 15 days after rice planting, and water was supplied according to rice cultivation method. Pore volumes of sandy loam, loam, and silty clay loam lysimeter were calculated to 718.87, 764.15, and 735.85 L, and pore volume numbers of supplied water for rice cultivation were 0.98, 1.08, and 0.24, respectively. Movement of pencycuron in each lysimeter was investigated through the residue of it in 30, 55, 85, and 125 cm soil water from topsoil and leaching water. Gas chromatography (GC) was used for pencycuron analysis in water sample. Recovery and limit of quantitation (LOQ) of pencycuron in water were 72.8-84.0% and 3 μg/L. Changes of moisture tension, humidity, and temperature in sandy loam, loam, and silty clay loam lysimeter was not significantly different during experiment period. Weight of silty clay loam lysimeter was higher than other lysimeter because of less leaching. Leaching volume of sandy loam, loam, and silty clay loam lysimeter were 705.9, 828.7, and 174.5 L, respectively. Total leaching content of pencycuron (treatment content 770.57 mg) during experiment period in sandy loam, loam, and silty clay loam lysimeter were 0, 13.61, and 0.53 mg, respectively. These results showed that the movement of pencycuron in sandy loam and silty clay loam paddy soil was very low.

비교란 Lysimeter를 활용한 논 토양에서의 살충제 Iprobenfos 용탈특성 구명

박병준 ( Byungjun Park ),임성진 ( Sungjin Lim ),오영탁 ( Youngtak Oh ),구명화 ( Myounghwa Ku ),주형곤 ( Hyeonggon Joo ),이민호 ( Minho Lee ),윤효인 ( Hyoin Yoon ),최근형 ( Geunhyoung Choi ),류송희 ( Songhee Ryu ),문병철 ( Byeongch 한국환경농학회 2017 한국환경농학회 학술대회집 Vol.2017 No.-

This study was conducted to investigate the leaching characteristics of fungicide iprobenfos in paddy soil using undisturbed lysimeter. Soil horizons of sandy loam, loam, and silty clay loam lysimeter were composed of 6, 6, and 5, and clay contents were ranged from 53.1-63.2, 40.2-47.7, and 32.6-39.2 %, respectively. Bulk densities of each lysimeter were 1.39, 1.34, and 1.37 Mg/m3, respectively. Iprobenfos was treated to each lysimeter at 14 days after rice planting, and water was supplied according to rice cultivation method. Pore volumes of sandy loam, loam, and silty clay loam lysimeter were calculated to 718.9, 764.2, and 735.9 L, and pore volume numbers of supplied water for rice cultivation were 2.1, 1.6, and 1.3, respectively. Movement of iprobenfos in each lysimeter was investigated through the residue of it in 30, 55, 85, and 125 cm soil water from topsoil and leaching water. Liquid chromatography (LC)-mass spectrometry (MS)-MS was used for iprobenfos analysis in water sample. Recovery and limit of quantitation (LOQ) of iprobenfos in water were 75.4-82.4% and 0.05 μg/L. Changes of moisture tension, humidity, and temperature in sandy loam, loam, and silty clay loam lysimeter was not significantly different during experiment period. Weight of silty clay loam lysimeter was higher than other lysimeter because of less leaching. Leaching volume decreased with increasing clay content of paddy soil, and the volume of sandy loam, loam, and silty clay loam lysimeter were 1964.7, 1868.4, and 1265.6 L, respectively. Total leaching content of iprobenfos (treatment content 1,541 mg) during experiment period in sandy loam, loam, and silty clay loam lysimeter were 0.2, 1.2, and 5.9 μg, respectively. Most of leached iprobenfos were detected at early stage of experiment in three lysimeters. Iprobenfos in soil horizon of sandy loam, loam, and silty clay loam paddy soil were detected at 46.6, 21.4 and 14.0 ng, respectively. These results showed that the movement of iprobenfos in sandy loam, loam, and silty clay loam paddy soil was very fast.

비교란 Lysimeter를 활용한 밭 토양에서의 살충제 Chlorpyrifos 용탈특성 구명

윤효인 ( Hyoin Yoon ),임성진 ( Sungjin Lim ),오영탁 ( Youngtak Oh ),구명화 ( Myounghwa Ku ),주형곤 ( Hyeonggon Joo ),이민호 ( Minho Lee ),최근형 ( Geunhyoung ),류송희 ( Choi Songhee Ryu ),문병철 ( Byeongchul Moon ),박병준 ( Byungj 한국환경농학회 2017 한국환경농학회 학술대회집 Vol.2017 No.-

This study was conducted to investigate the leaching characteristics of insecticide chlorpyrifos in upland soil using undisturbed lysimeter. Soil horizons of sandy loam, loam, and silty clay loam lysimeter were composed of 6, 6, and 5, and clay contents were ranged from 5.0-12.0, 7.0-12.0, and 25.0-37.0%, respectively. Bulk densities of each lysimeter were 1.40, 1.41, and 1.45 Mg/m3, respectively. Chlorpyrifos was treated to each lysimeter at 14 days after Chinese cabbage planting, and water was supplied according to Chinese cabbage cultivation method. Pore volumes of sandy loam, loam, and silty clay loam lysimeter were calculated to 718.9, 701.9, and 679.3 L, and pore volume numbers of supplied water for Chinese cabbage cultivation were 0.48, 0.53, and 0.38, respectively. Movement of chlorpyrifos in each lysimeter was investigated through the residue of chlorpyrifos in 30, 55, 85, and 125 cm soil water from topsoil and leaching water. Liquid chromatography (LC)-quadrupole time of flight (QTOF)-mass spectrometry (MS) was used for chlorpyrifos analysis in water sample. Recovery and limit of quantitation (LOQ) of chlorpyrifos in water were 95.0-102.1% and 0.01 μg/L. Changes of moisture tension, humidity, weight, and temperature in sandy loam, loam, and silty clay loam lysimeter was not significantly different. Leaching volume decreased with increasing clay content of upland soil, and the volume of sandy loam, loam, and silty clay loam lysimeter were 343.1, 372.3, and 256.3 L, respectively. Total leaching content of chlorpyrifos (treatment content 770.5 mg) during experiment period in sandy loam, loam, and silty clay loam lysimeter were 0.028, 0.034, and 0.024 mg, respectively. The content in three lysimeter was not significantly different. However, chlorpyrifos in soil horizon of sandy loam, loam, and silty clay loam upland soil were detected at 307.0, 191.3, and 137.6 μg, respectively. These results showed that the movement of chlorpyrifos in sandy loam, loam, and silty clay loam paddy soil was very low because the pesticide was steadily detected in soil horizon and leachate at 150 days after treatment.

사양토성 Lysimeter에서 살균제 $^{14}C-Propiconazole$의 행방

김인선,서용택,Kim, In-Seon,Suh, Yong-Tack 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.33 No.2

사양토성 lysimeter에서 살균제 $^{14}C-propiconazole$의 행방을 조사하고자 하였다. 벼 이앙 15일 후 $^{14}C-propiconazole$을 0.12 kg/10a 수준으로 lysimeter 토양표면에 처리한 후 시기별로 용탈수, 토양 및 휘발성분중 방사능을 조사하였다. 약제처리 후 16주간 lysimeter토양에서 용탈된 방사능은 처리 방사능의 4.4%였으며, 대부분의 방사능은 모화합된 형태이었다. 약제처리 16주 후 토양에 잔류하는 방사능은 처리 방사능의 76.5%였으며 97% 이상이 토양표층 깊이 20 cm 이내에 존재하였다. Lysimeter 토양에서 생성된 $^{14}CO_2$는 처리 방사능의 7.8%였다. 벼 수확 후 볏짚에 잔류하는 방사능은 처리량의 7.2%였으며 지엽, 벼이삭, 왕겨 그리고 현미에서는 각각 0.1% 이하를 나타내었다. Behaviour of a fungicide $^{14}C-propiconazole$ was investigated in a field lysimeter of sandy loam soil. At 15 days after rice-seedling transplanting, $^{14}C-propiconazole$ was treated on the soil surface at the rate of 0.12 kg/10a. The cummulative $^{14}C-radioactivity$ in the leachate from the lysimeter soil was 4.4% of the applied $^{14}C$ for 16 weeks. Most radioactivity detected in leachate was in the form of parent compound. At the end of lysimeter experiment. $^{14}C$ radioactivity in lysimeter soil was 76.5% of the applied $^{14}C$ and more than 97% of $^{14}C$ in soil remained in the top 20 cm. The percent of $^{14}CO_2$ evolved from lysimeter soil was 7.8% of the applied $^{14}C$. The radioactivity remained in the rice straw after harvest was 7.2% of the applied $^{14}C$, while less than 0.1% of the applied $^{14}C$ was detected in flag leaf, ear, chaff and hulled rice, respectively.