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한국환경농학회지 update

KOREAN JOURNAL OF ENVIRONMENTAL AGRICULTURE

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수록정보
수록범위 : 1권1호(1982)~39권3호(2020) |수록논문 수 : 1,632
한국환경농학회지
39권3호(2020년 09월) 수록논문
최근 권호 논문
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KCI등재

1KOH 농도 및 탄화온도가 왕겨 활성 바이오차의 NH4-N 흡착능 향상에 미치는 영향

저자 : 김희선 ( Huiseon Kim ) , 윤석인 ( Seok-in Yun ) , 안난희 ( Nanhee An ) , 신중두 ( Joungdu Shin )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 171-177 (7 pages)

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BACKGROUND: Recently, biomass conversion from agricultural wastes to carbon-rich materials such as biochar has been recognized as a promising option to maintain or increase soil productivity, reduce nutrient losses, and mitigate greenhouse gas emissions from the agro-ecosystem. This experiment was conducted to select an optimum conditions for enhancing the NH4-N adsorption capacity of rice hull activated biochar.
METHODS AND RESULTS: For deciding the proper molarity of KOH for enhancing its porosity, biochars treated with different molarity of KOH (0, 1, 2, 4, 6, 8) were carbonized at 600℃ in the reactor. The maximum adsorption capacity was 1.464 mg g-1, and an optimum molarity was selected to be 6 M KOH. For the effect of adsorption capacity to different carbonized temperatures, 6 M KOH-treated biochar was carbonized at 600℃ and 800℃ under the pyrolysis system. The result has shown that the maximum adsorption capacity was 1.76 mg g-1 in the rice hull activated biochar treated with 6 M KOH at 600℃ of pyrolysis temperature, while its non-treated biochar was 1.17 mg g-1. The adsorption rate in the rice hull activated biochar treated with 6 M KOH at 600℃ was increased at 62.18% compared to that of the control. Adsorption of NH4-N in the rice hull activated biochar was well suited for the Langmuir model because it was observed that dimensionless constant (RL) was 0.97 and 0.66 at 600℃ and 800℃ of pyrolysis temperatures, respectively. The maximum adsorption amount (qm) and the bond strength constants (b) were 0.092 mg g-1 and 0.001 mg L-1, respectively, for the rice hull activated biochar treated with 6 M KOH at 600℃ of pyrolysis.
CONCLUSION: Optimum condition of rice hull activated biochar was 6M KOH at 600℃ of pyrolysis temperature.

KCI등재

2커피찌꺼기 퇴비화 과정의 물리, 화학 및 생물학적 변화

저자 : 신지환 ( Ji-hwan Shin ) , 박승혜 ( Seung-hye Park ) , 김아름 ( A-leum Kim ) , 손이헌 ( Yi-hun Son ) , 주세환 ( Se-hwan Joo )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 178-187 (10 pages)

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BACKGROUND: Spent coffee grounds are the most valuable resource for agriculture and industry. However, it is almost thrown untreated into landfills or incineration. Composting is an efficient process for converting spent coffee to fertilizer.
METHODS AND RESULTS: Composting was conducted in the compost pile (40 m3) equipped with a forced aeration system. Physical and chemical properties containing temperature, pH, electrical conductivity, and moisture were measured through the composting period. Moreover, biological changes were examined for the composting phase using Illumina Miseq sequencing of the 16S rRNA gene. We found 7-14 phyla comprising 250-716 species from a variety phase of compost. During the composting period, Firmicutes were dominated, followed by Actinobacteria and Proteobacteria.
CONCLUSION: The result indicated that the use of spent coffee improved the quality of organic fertilizer and changed the microbial communities, unique to the thermal composting stage, which could enhance the composting process. These findings suggest that spent coffee composted material can provide a significant amount of nutrients, thereby supporting plant growth.

KCI등재

3새만금 간척지와 일반밭 토양에서 뚱딴지(Helianthus tuberosus L.) 재배시 생육 및 이눌린 평가

저자 : 오양열 ( Yang-yeol Oh ) , 김승연 ( Seung-yeon Kim ) , 이광식 ( Kwang-sik Lee ) , 류진희 ( Jin-hee Ryu ) , 이수환 ( Su-hwan Lee ) , 옥희경 ( Hee-kyoung Ock ) , 정강호 ( Kang-ho Jung ) , 강방훈 ( Bang-hun Kang ) , 김길용 ( Kil-yong Kim )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 188-196 (9 pages)

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BACKGROUND: In order to cultivate upland crops in reclaimed land, economically appropriate crops should be selected. Jerusalem artichoke (Helianthus tuberosus L.) is one of the primary sources for inulin in higher plants. The objective of this study was to evaluate and compare growth and inulin of H. tuberosus L. according to the cultivation region in Korea.
METHODS AND RESULTS: 21 varieties of H. tuberosus L. were collected in Korea, and then 7 varieties of H. tuberosus L. were selected for this study. To compare growth and inulin, those varieties were cultivated in reclaimed land and upland soils. The growth of H. tuberosus L. significantly decreased when cultivated in reclaimed land. There was an increas at 17.8% in the content of white H. tuberosus L. tuber inulin in reclaimed land.
CONCLUSION: The content of inulin in H. tuberosus L. tubers was found to be dependent on cultivation region and tuber color. There was a difference of the inulin content between the tubers with different colors in reclaimed land. Purple tubers of P20 were considered suitable varieties for cultivation in reclaimed land. White tubers of W1 and W8 were also considered suitable varieties for cultivation in reclaimed land.

KCI등재

4대동호의 시기별 및 계절별 수질변화 평가

저자 : 윤진주 ( Jin-ju Yun ) , 강세원 ( Se-won Kang ) , 박종환 ( Jong-hwan Park ) , 서동철 ( Dong-cheol Seo ) , 김현우 ( Hyun-woo Kim ) , 조주식 ( Ju-sik Cho )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 197-203 (7 pages)

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BACKGROUND: Most lakes have increased concerns about water pollution due to the inflow of non-point sources caused by human activities. Therefore, the lake water quality survey was conducted in order to propose effective plans for water quality management by analyzing the characteristics of lakes and the change of water quality.
METHODS AND RESULTS: In order to investigate the physicochemical water quality in Daedong lake, water quality analysis was undertaken from July 2018 to June 2019. Water temperature was ranged from 7.8 to 34.3℃ and pH varied from 6.9 to 10.2. The concentration of Dissolved oxygen, Suspended solid, Biochemical Oxygen Demand (BOD), and Chemical Oxygen Demand (COD) were 5.6 ~ 17.2 mg/L, 2.4 ~ 35.3 mg/L, and 4.5 ~ 15.1 mg/L, and 0.9 ~ 2.8 mg/L, respectively. The Total Nitrogen (T-N) concentration ranged from 0.974 ~ 2.126 mg/L, and Total Phosphorus (T-P) concentration ranged from 0.014 ~ 0.057 mg/L. The Chlorophyll-a (Chl-a) ranged from 2.7 ~ 37.9 mg/m3. Through Carlson TSIm assessment using T-P and Chl-a results, evaluating trophic state, Daedong lake was evaluated as mesotrophic.
CONCLUSION: Water pollution management plan needs such as nutrient removal technology and nonpoint source management for prevention of eutrophication in Daedong lake.

KCI등재

5간척지 재배 근채류의 최대 엽장과 엽폭을 이용한 지하부 생체중 추정용 회귀 모델 결정

저자 : 정대호 ( Dae Ho Jung ) , 이평호 ( Pyoung Ho Yi ) , 이인복 ( In-bog Lee )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 204-213 (10 pages)

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BACKGROUND: Since the number of crops cultivated in reclaimed land is huge, it is very difficult to quantify the total crop production. Therefore, a non-destructive method for predicting crop production is needed. Salt tolerant root vegetables such as red beets and sugar beet are suitable for cultivation in reclaimed land. If their underground biomass can be predicted, it helps to estimate crop productivity. Objectives of this study are to investigate maximum leaf length and weight of red beet, sugar beet, and turnips grown in reclaimed land, and to determine optimal model with regression analysis for linear and allometric growth models.
METHODS AND RESULTS: Maximum leaf length, width, and root fresh weight of red beets, sugar beets, and turnips were measured. Ten linear models and six allometric growth models were selected for estimation of root fresh weight and non-linear regression analysis was conducted. The allometric growth model, which have a variable multiplied by square of maximum leaf length and maximum leaf width, showed highest R2 values of 0.67, 0.70, and 0.49 for red beets, sugar beets, and turnips, respectively. Validation results of the models for red beets and sugar beets showed the R2 values of 0.63 and 0.65, respectively. However, the model for turnips showed the R2 value of 0.48. The allometric growth model was suitable for estimating the root fresh weight of red beets and sugar beets, but the accuracy for turnips was relatively low.
CONCLUSION: The regression models established in this study may be useful to estimate the total production of root vegetables cultivated in reclaimed land, and it will be used as a non-destructive method for prediction of crop information.

KCI등재

6Residues Analysis of Acetamiprid, Boscalid, Imidacloprid and Pyraclostrobin in the Minor Crop Mustard Green under Greenhouse Conditions for Evaluation of their Potentiality of PLS Violation

저자 : Young Eun Kim , Seon Wook Kim , Da Jung Lim , In Seon Kim

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 214-221 (8 pages)

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BACKGROUND: The demand for pesticide registration has kept increasing for minor crop cultivation in greenhouse since Positive List System (PLS) has been launched. Thus, much study on the evaluation of pesticide residues in minor crops is required to examine the demand. In this study, we evaluated residues of acetamiprid, boscalid, imidacloprid and pyraclostrobin in the minor crop mustard green to provide the potential data for their registration.
METHODS AND RESULTS: Pesticide granule formulations of acetamiprid, boscalid, imidacloprid and pyraclostrobin were incorporated into soil and applied onto field soil surface at rates of 3 kg/10a, 6 kg/10a, 3 kg/10a and 6 kg/10a, respectively. The pesticides were also applied at the two times higher than the rates to compare the residues between the application rates. Mustard green seeds were sown 1 day after pesticide application and cultivated under greenhouse conditions. LC/MS/MS analyses coupled with a modified QuEChERs method were employed for determination of the pesticides in plant samples. The method limits of quantitation (LOQ) of the pesticides were 0.01 mg/kg, and the matrix calibration curves of the pesticides showed linearity with coefficient values of determination (r2) greater than 0.995. The average recovery values of the pesticides fortified in control samples at rates of LOQ and 10LOQ ranged from approximately 77.5% to 101.2% with relative standard deviation values lower than 14%. The pesticides in the mustard green samples cultivated for 53 days after sown were determined to be lower than the LOQ level.
CONCLUSION: Acetamiprid, boscalid, imidacloprid and pyraclostrobin were found at a level lower than 0.01 mg/kg in the minor crop mustard green. Thus, their residues in mustard green would not violate PLS under greenhouse conditions.

KCI등재

7왕겨 활성 바이오차 혼합 비율에 따른 우분 호기소화 시 온실가스 발생 특성

저자 : 노연희 ( Yeonhee Ro ) , 정우진 ( Woojin Chung ) , 정석주 ( Seokjoo Chung ) , 정인호 ( Inho Jung ) , 나홍식 ( Hongsik Na ) , 김민수 ( Minsoo Kim ) , 신중두 ( Joungdu Shin )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 222-227 (6 pages)

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BACKGROUND: Among the biomass conversion techniques of livestock manure, composting process is a method of decomposing organic matter through microorganisms, and converting it into fertilizer in soil. The aerobic composting process is capable of treating cow manure in large quantities, and produces greenhouse gas as CO2 and N2O, although it has economical benefit. By using the activated rice hull biochar, which is a porous material, it was intended to mitigate the greenhouse gas emissions, and to produce the compost of which quality was high. Objective of this experiment was to estimate CO2 and N2O emissions through composting process of cow manure with different cooperated biochar contents.
METHODS AND RESULTS: The treatments of activated rice hull biochar were set at 0%, 5%, 10% and 15%, respectively, during composting cow manure. The CO2 emission in the control was 534.7 L kg-1, but was 385.5 L kg-1 at 15% activated rice hull biochar. Reduction efficiency of CO2 emission was estimated to be 28%. N2O emission was 0.28 L kg-1 in the control, but was 0.03 L min-1 at 15% of activated rice hull biochar, estimating about 89% reduction efficiency.
CONCLUSION: Greenhouse gas emissions during the composting process of cow manure can be reduced by mixing with 15% of activated rice hull biochar for eco-friendly compost production.

KCI등재

8벼논에서 폐쇄형 자동 챔버 시스템으로 측정한 메탄 농도에 대한 요인별 측정 불확도 비교

저자 : 주옥정 ( Ok Jung Ju ) , 강남구 ( Namgoo Kang ) , 임갑준 ( Gap June Lim )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 228-236 (9 pages)

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BACKGROUND: The closed chamber method is the most commonly used for measuring greenhouse gas emissions from rice fields. This method has the advantages of being simple, easily available and economical. However, a measurement result using the chamber method is an estimated value and is complete when the uncertainty is estimated. The methane emissions from a rice paddy account for the largest portion of the greenhouse gas emissions in the agriculture sectors. Although assessment of uncertainty components affecting methane emission from a rice paddy is necessary to take account of dispersion characteristics, research on these uncertainty components is very rare to date. The goal of this study was to elucidate influencing factors on measurement uncertainty of methane concentrations measured by a closed automated chamber system from a rice paddy.
METHODS AND RESULTS: The methane sampling system is located in the rice paddy in Gyeonggi-do Agricultural Research and Extension Services (37° 13′15″ N, 127° 02′22″E). The primary measurement uncertainty components influencing methane concentrations (influencing factors) investigated in this research were repeatability, reproducibility and calibration in the aspects of methane sampling and analytical instrumentation. The magnitudes of the relative standard uncertainty of each influencing factor were quantified and compared.
CONCLUSION: Results of this study showed what influencing factors were more important in determination of methane concentrations measured using the chamber system and analytical instrumentation located in the monitoring site. Quantifying the measurement uncertainty of the methane concentrations in this study would contribute to improving measurement quality of methane fluxes.

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9밭토양에서 폐쇄형 자동 챔버법으로 측정한 아산화질소 농도에 대한 측정 불확도

저자 : 주옥정 ( Ok Jung Ju ) , 강남구 ( Namgoo Kang ) , 임갑준 ( Gap June Lim )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 237-245 (9 pages)

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BACKGROUND: The closed chamber method is the most commonly used for measuring greenhouse gas emissions from upland fields. This method has the advantages of being simple, easily available and economical. However, uncertainty estimation is essential for accurate assessment of greenhouse gas emissions and verification of emission reductions. The nitrous oxide emissions from upland field is very important for the nitrogen budget in the agriculture sectors. Although assessment of uncertainty components affecting nitrous oxide emission from upland field is necessary to take account of dispersion characteristics, research on these uncertainty components is very rare to date. This study aims at elucidation of influencing factors on measurement uncertainty of nitrous oxide concentrations measured by an automated open closed chamber method from upland field.
METHODS AND RESULTS: The nitrous oxide sampling system is located in the upland field in Gyeonggi-do Agricultural Research and Extension Services (37°13′22″ N, 127° 02′22″E). The primary measurement uncertainty components influencing nitrous oxide concentrations (influencing factors) investigated in this research are repeatability, reproducibility and calibration in the aspects of nitrous oxide sampling and analytical instrumentation. The magnitudes of the relative standard uncertainty of each influencing factor are quantified and compared.
CONCLUSION: Results of this study show what influencing factors are more important in determination of nitrous oxide concentrations measured using the automated open closed chambers located in the monitoring site. Quantifying the measurement uncertainty of the nitrous oxide concentrations in this study would contribute to improving measurement quality of nitrous oxide fluxes.

KCI등재

10QuEChERS법을 활용한 농산물 중 제초제 Tolpyralate의 최적 분석법 선발 및 검증

저자 : 이한솔 ( Han Sol Lee ) , 박지수 ( Ji-su Park ) , 이수정 ( Su Jung Lee ) , 신혜선 ( Hye-sun Shin ) , 김지영 ( Ji-young Kim ) , 윤상순 ( Sang Soon Yun ) , 정용현 ( Yong-hyun Jung ) , 오재호 ( Jae-ho Oh )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 3호 발행 연도 : 2020 페이지 : pp. 246-252 (7 pages)

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BACKGROUND: Pesticides are broadly used to control weeds and pests, and the residues remaining in crops are managed in accordance with the MRLs (maximum residue limits). Therefore, an analytical method is required to quantify the residues, and we conducted a series of analyses to select and validate the quick and simple analytical method for tolpyralate in five agricultural products using QuEChERS (quick, easy, cheap, effective, rugged and safe) method and LC-MS/MS (liquid chromatography-tandem mass spectrometry).
METHODS AND RESULTS: The agricultural samples were extracted with acetonitrile followed by addition of anhydrous magnesium sulfate, sodium chloride, disodium hydrogencitrate sesquihydrate and trisodium citrate dihydrate. After shaking and centrifugation, purification was performed with d-SPE (dispersive-solid phase extraction) sorbents. To validate the optimized method, its selectivity, linearity, LOD (limit of detection), LOQ (limit of quantitation), accuracy, repeatability, and reproducibility from the inter-laboratory analyses were considered. LOQ of the analytical method was 0.01 mg/kg at five agricultural products and the linearity of matrix-matched calibration were good at seven concentration levels, from 0.0025 to 0.25 mg/L (R2≥0.9980). Mean recoveries at three spiking levels (n=5) were in the range of 85.2~112.4% with associated relative standard deviation values less than 6.2%, and the coefficient of variation between the two laboratories was also below 13%. All optimized results were validated according to the criteria ranges requested in the Codex Alimentarius Commission (CAC) and Ministry of Food and Drug Safety (MFDS) guidelines.
CONCLUSION: In conclusion, we suggest that the selected and validated method could serve as a basic data for detecting tolpyralate residue in imported and domestic agricultural products.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동41회 피인용

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