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 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 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 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.