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KOREAN JOURNAL OF ENVIRONMENTAL AGRICULTURE

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수록정보
수록범위 : 1권1호(1982)~39권4호(2020) |수록논문 수 : 1,645
한국환경농학회지
39권4호(2020년 12월) 수록논문
최근 권호 논문
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KCI등재

1전기방사로 제작된 재이용 가능한 PAN/제올라이트 섬유의 암모니아 흡착 특성

저자 : 노연희 ( Yeon Hee Ro ) , 정우진 ( Woo Jin Chung ) , 장순웅 ( Soon Woong Chang )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 281-288 (8 pages)

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BACKGROUND: Generally, ammonia occurs from agricultural waste disposal. Ammonia is known as a harmful substance to the human body and has a bad influence such as eutrophication on the ecosystem. It is possible to remove the ammonia by ammonia adsorption method using natural zeolite, without external influence. However, due to the natural zeolite shape, it is hard to reuse.
METHODS AND RESULTS: Electrospinning method can produce fiber with constant diameter. Moreover, electrospinning method has no limitation for selecting the material to make the fiber, and thus, it is valuable to reform the surface of adsorbent. In this study, reusable membrane was made by electrospinning method. The highest removal efficiency was shown from the membrane with 20% of zeolite included, and it has been verified that it is possible to reuse the membrane through chemical treatment. The highest ammonia removal efficiency was about 92.4%.
CONCLUSION: In this study, ammonia adsorption characteristics of zeolite fibers were studied. Electrospinning method can produce zeolite fiber with even distribution. Ammonia can be removed efficiently from ion exchange ability of the natural zeolite. The result of adsorption isotherm indicated that both Freundlich model and Langmuir model provided the best fit for equilibrium data. And study on desorption has demonstrated that the ion exchange from zeolite was reversible when 0.01 M NaCl and KCl solution were used.

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2철 함침 낙엽 Biochar에 의한 음이온성 염료의 흡착특성

저자 : 박종환 ( Jong-hwan Park ) , 김홍출 ( Hong-chul Kim ) , 김영진 ( Yeong-jin Kim ) , 서동철 ( Dong-cheol Seo )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 289-296 (8 pages)

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BACKGROUND: There is a need for a revolutionary method to overcome the problem of biochar, which has relatively low adsorption capacity for existing anion pollutants, along with collectively recycling fallen leaves, a kind of forest by-product. Therefore, the objective of this study was to prepare iron-decorated biochar derived from fallen leaves (Fe-FLB), and to evaluate their adsorption properties to Congo red (CR) as anionic dye.
METHODS AND RESULTS: The adsorption properties of CR by fallen leaves biochar (FLB) and Fe-FLB were performed under various conditions such as initial CR concentration, reaction time, pH and dosage with isotherm and kinetic models. In this study, Fe-FLB prepared through iron impregnation and pyrolysis of fallen leaves contained 56.9% carbon and 6.3% iron. Congo red adsorption by FLB and Fe-FLB was well described by Langmuir model and pseudo second order model and the maximum adsorption capacities of FLB and Fe-FLB were 1.1 mg/g and 25.6 mg/g, respectively. In particular, it was found that the adsorption of CR was occurred by chemical adsorption process by the outer boundary layer of Fe-FLB.
CONCLUSION: Overall, the production of Fe-FLB using fallen leaves and using it as an anion adsorbent is considered to be a way to overcome the problem of biochar with relatively low anion adsorption in addition to the reduction effect of waste.

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3옥수수 재배지 아산화질소 배출에 대한 질소비료와 바이오차 시용 효과

저자 : 이선일 ( Sun-il Lee ) , 김건엽 ( Gun-yeob Kim ) , 최은정 ( Eun-jung Choi ) , 이종식 ( Jong-sik Lee ) , 권효숙 ( Hyo-suk Gwon ) , 신중두 ( Joung-du Shin )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 297-304 (8 pages)

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BACKGROUND: Emission of nitrous oxide (N2O) from the soil is expected to depend on the types of nitrogen fertilizer used. Biochar has recently been proposed as a potential mitigation of climate change by reducing the N2O emission. Although laboratory studies reported that biochar applications could reduce N2O emission, the number of field-based studies is still limited. Therefore, a field experiment was conducted to investigate the effect of biochar on N2O emission when different nitrogen fertilizers were applied in corn cultivated field.
METHODS AND RESULTS: The field experiment consisted of six treatments: urea fertilizer without biochar (U), ammonium sulfate fertilizer without biochar (A), oil cake fertilizer without biochar (O), urea fertilizer with biochar (U+B), ammonium sulfate fertilizer with biochar (A+B), and oil cake fertilizer with biochar (O+B). Biochar was applied at a rate of 10 t/ha. Greenhouse gas fluxes were measured during growing seasons using static vented chambers. The cumulative N2O emissions were 0.99 kg/ha in the U, 1.23 kg/ha in the A, 3.25 kg/ha in the O, 1.19 kg/ha in the U+B, 0.86 kg/ha in the A+B, and 1.55 kg/ha in the O+B.
CONCLUSION: It was found that N2O emission was related to application of both nitrogen fertilizer type and biochar. In particular, the N2O reduction effect was the highest in the corn field incorporated with biochar when oil cake was applied to the soil.

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4딸기 중 침투성 및 비침투성 농약에 따른 잔류특성 연구

저자 : 유정선 ( Jung-sun You ) , 곽혜민 ( Hye-min Gwak ) , 장희라 ( Hee-ra Chang )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 305-311 (7 pages)

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BACKGROUND: The healthy food trend has encouraged the consumption of natural products, including berries. This trend is expected to increase the strawberry consumption. There has been a concern about the exposure of pesticides approved for use on strawberry. In this study, the dissipation patterns of systemic and non-systemic pesticides were evaluated in strawberry under plastic-covered greenhouse conditions.
METHODS AND RESULTS: Cyflumetofen and dimethomorph were applied on strawberry in the critical GAP (Good Agricultural Practices). Strawberries were harvested at 0, 1, 2, 3, 5, 7 and 10 days after final application of the pesticides. The analyses of the residual pesticideswere performed by HPLC-DAD with C18 column. The limits of quantitation (LOQ) of cyflumetofen and dimethomorph were 0.04 and 0.02 mg/kg, respectively. The recovery of cyflumetofen and dimethomorph were 88.1 ~ 103.3% and 79.0 ~ 110.2% for the spiked two levels (LOQ and 10LOQ), respectively. The biological half-lives of cyflumetofen and dimethomorph werer 7.5 and 8.9 days, respectively. The dissipation rates in strawberry were calculated by the statistics method at a 95% confidence level. The distribution showed that pesticides with low log Pow were indicated by the decreased dissipation rate and pesticides with similar log Pow and low solubility also showed the decreased dissipation rate.
CONCLUSION: The residues of cyflumetofen and dimethomorph in strawberry at time 0 after the final application were below the established MRL in Korea. The dissipation behavior of systemic and non-systemic pesticides in strawberry is affected by their log Pow and water solubility values.

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5Photoreversibility of Fruiting and Growth in Oriental Melon (Cucumis melo L.)

저자 : Sung-chang Hong , Jin-ho Kim , So-jin Yeob , Min-wook Kim , Sae-nun Song , Gyu-hyun Lee , Kyeong-sik Kim , Seon-young Yu

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 312-318 (7 pages)

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BACKGROUND: Photoreversibility, a reversion of the inductive effect of a brief red light pulse by a subsequent far red light pulse, is a property of photo responses regulated by the plant photoreceptor phytochrome B. Plants use photoreceptors to sense photo signal and to adapt and modify their morphological and physiological properties. Phytochrome recognizes red light and far red light and plays an important role in regulating plant growth and development.
METHODS AND RESULTS: The reversal responses of growth and fruiting characteristics were investigated to increase the yield of oriental melon (Cucumis Melo L. var. Kumsargakieuncheon) by means of controlling light quality in a plastic house. Red (R:660nm) and far red (FR:730nm) lights were subsequently irradiated on the whole stems and leaves of the oriental melon plant during growing periods, using red and far red LEDs as light sources, from 9:00 PM daily for 15 minutes. The intensities of R and FR light were 0.322-0.430 μmol m-2s-1 and 0.250-0.366 μmol m-2s-1, respectively. Compared to R light irradiation, combination of R and FR light irradiation increased the length of internode, number of axillary stems, number of female flowers, and fruit number of oriental melons. The results of treatment with R were similar to R-FR-R light irradiation in terms of length of internode, number of axillary stems, number of female flowers, and number of fruits. When FR treatment was considered, R-FR and R-FR-R-FR light irradiation had similarities in responses. These reversal responses revealed that oriental melon showed a photoreversibility of growth characteristics, flowering, and fruiting.
CONCLUSION: These results suggested the possibility of phytochrome regulation of female flower formation and fruiting in oriental melon. The fruit weight of the oriental melon was the heaviest with the R light irradiation, while the number of fruits was the highest with the FR light. With the FR light irradiation, the fruit weight was not significantly higher compared to that of the control. Meanwhile, the yield of oriental melon fruits increased by 28-36% according to the intensities of the FR light due to the increases of the number of fruits.

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6수경배양액 무기성분농도 측정장치 개발

저자 : 허정욱 ( Jeong-wook Heo ) , 박경훈 ( Kyeong-hun Park ) , 홍승길 ( Seung-gil Hong ) , 이재수 ( Jae-su Lee ) , 백정현 ( Jeong-hyun Baek ) , 박종택 ( Jong-taek Park ) , 이승기 ( Seung-kee Lee )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 319-326 (8 pages)

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BACKGROUND: Measurement equipment was developed for inorganic nutrient concentration inside the hydroponic culture medium with several macro- and micro compositions, and applied for measuring the compositions of conventional medium.
METHODS AND RESULTS: Before the equipment development, sonicator and heater were utilized to control temperature around of the module mixing with color reagents and target samples among the inorganic compositions. The measurement module and multi-sampler were also manufactured based on the COMS (Complementary Metal- Oxide Semiconductor) and installed inside the measurement equipment. Concentration of standard solution, value measured by the equipment, standard deviation or measured average value were used for estimating the accuracy and average recall of the equipment. Yamazaki solutions with EC of 0.5, 1.5, and 2.5 dS/m were offered to confirm the equipment accuracy and standard error.
CONCLUSION: It was suggested that the developed equipment could be automatically applied for measurement with accuracy of over 96% and standard errors of less than 5% on 12 macro- and micro compositions such as a NO3-N, PO4 3- or Fe.

KCI등재

7새만금 간척지 토양 염농도의 경시적 변동 특성: 10년 조사 결과

저자 : 류진희 ( Jin-hee Ryu ) , 오양열 ( Yang-yeol Oh ) , 이수환 ( Su-hwan Lee ) , 이경도 ( Kyung-do Lee ) , 김영주 ( Young-joo Kim )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 327-333 (7 pages)

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BACKGROUND: Through Saemangeum development project, 283 ㎢ of new land is planned to be created and the reclaimed land of 89.7 ㎢ will be used as agricultural land. Therefore, monitoring of soil salinity is required to evaluate the suitability of the land for agricultural purposes.
METHODS AND RESULTS: We investigated changes of soil physico-chemical properties, including electric conductivity (EC), of the Saemangeum reclaimed tidal land (1,195 ha) from 2008 to 2017 to obtain basic data for suitable soil management of the Saemangeum reclaimed tidal land. Soil samples were collected from the sites spaced 200 meters apart from each other. Soil analysis results showed that average soil EC was 14.5 dS m-1 in 2008, and decreased to 6.5 dS m-1 in 2014 and to 0.9 dS m-1 in 2017. Accordingly, the soil area below soil EC 4.7 dS m-1 (accepted as farmable soil salinity) increased; 25.0% in 2008, 54.3% in 2014, and 96.9% in 2017. The annual decrease in soil EC was described as y = -1.5756x + 14.6 (R²= 0.96), where y = soil EC and x = elapsed years since 2008.
CONCLUSION: The soil salinity have decreased to a level for cultivation of most edible crops. However, since the soil chemical properties, such as soil organic matter were inadequate for the cultivation of crops, it was suggested that management of soil fertility would be important for efficient agricultural use of Saemangeum reclaimed land.

KCI등재

8에디 공분산 플럭스 자료를 이용한 논, 밭, 과수원의 연간 탄소 흡수량 추정 및 비교

저자 : 허지나 ( Jina Hur ) , 심교문 ( Kyo-moon Shim ) , 이병태 ( Byeongtae Lee ) , 김용석 ( Yongseok Kim ) , 조세라 ( Sera Jo )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 334-342 (9 pages)

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BACKGROUND: To quantify carbon exchange at agricultural ecosystems in South Korea, net ecosystem exchange (NEE) at three croplands including a rice paddy, a bean field and an apple orchard was measured on the basis of the eddy covariance technique.
METHODS AND RESULTS: NEE of CO2 during the growing season (June to September) averaged over the recent two years (2018-2019) was the highest at rice (-4.49 g C m-2 day-1), followed by the bean (-3.12 g C m-2 day-1) and apple (-0.93 g C m-2 day-1). The diurnal variation of NEE was the highest at the rice, while the seasonal variation of it was the highest at the bean than others. In terms of yearly variation, the rice paddy and the bean field absorbed more CO2 in 2019 compared to 2018, while the apple orchard absorbed less.
CONCLUSION: Our results confirmed that these croplands consistently acted as net sinks for CO2 during the growing season because an amount of CO2 uptake from photosynthesis was larger than one of its emissions from respiration. The quantification of net CO2 exchange at agricultural ecosystems may help to better understand the local carbon cycle over various time scales.

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9경기, 강원 지역 농업용수의 미생물학적 특성 및 농업용수 분리 대장균의 항생제 내성

저자 : 황인준 ( Injun Hwang ) , 박대수 ( Daesoo Park ) , 채효빈 ( Hyobeen Chae ) , 김은선 ( Eunsun Kim ) , 윤재현 ( Jae-hyun Yoon ) , 나겐드란라자린감 ( Nagendran Rajalingam ) , 최송이 ( Songyi Choi ) , 김세리 ( Se-ri Kim )

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 343-351 (9 pages)

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BACKGROUND: Irrigation water is known to be one of the major sources of bacterial contamination in agricultural products. In addition, anti-microbial resistance (AMR) bacteria in food products possess serious threat to humans. This study was aimed at investigating the prevalence of foodborne bacteria in irrigation water and evaluating their anti-microbial susceptibility.
METHODS AND RESULTS: Surface water (n = 66 sites) and groundwater (n = 40 sites) samples were collected from the Gyeongi and Gangwon provinces of South Korea during April, July, and October 2019. To evaluate the safety of water, fecal indicators (Escherichia coli) and foodborne pathogens (E. coli O157:H7, Salmonella spp., and Listeria monocytogenes) were examined. E. coli isolates from water were further tested for antimicrobial susceptibility using VITEK2 system. Overall, detection rate of foodborne pathogens in July was highest among three months. The prevalence of pathogenic E. coli (24%), Salmonella (3%), and L. monocytogenes (3%) was higher in surface water, while only one ground water site was contained with pathogenic E. coli (2.5%). Of the 343 E. coli isolates, 22.7% isolates were resistant to one or more antimicrobials (ampicillin (18.7%), trimethoprim-sulfamethoxazole (7.0%), and ciprofloxacin (6.7%)).
CONCLUSION: To enhance the safety of agricultural products, it is necessary to frequently monitor the microbial quality of water.

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10Effect of the Nutritive Components of Mulberry Fruits From Two Cultivars Based on Irrigation Scheduling

저자 : Wan-taek Ju , Sora Lee , Heon-woong Kim , You-young Jo , Hae-yong Kwon

발행기관 : 한국환경농학회 간행물 : 한국환경농학회지 39권 4호 발행 연도 : 2020 페이지 : pp. 352-359 (8 pages)

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BACKGROUND: The mulberry cultivars 'Daeshim' and 'Shimgang' were developed in RDA in 2014 and 2017, respectively. 'Daeshim' yields a fruit size bigger than that of other varieties and has a productivity of over 70%, whereas 'Shimgang' has a high yield and a special characterization against the mulberry popcorn disease. In our study, a compositional comparison of these popular cultivars in Korea was undertaken to explore the nutrient profiles of mulberry fruit and promote the development of the rich minerals and flavonoids in mulberry fruit as performing each other irrigation time.
METHODS AND RESULTS: These two cultivars were collected from the Sericulture and Apiculture Division, RDA, in Korea to investigate their amounts, weights, minerals, and flavonoid content using each other instrument. After 6 h of irrigation treatment, the amount of fruit (kg/tree) from Daeshim and Shimgang increased by 17.5 and 15.2 kg/tree, respectively. The total flavonoid content from Daeshim and Shimgang was determined to be 132.9 mg and 36.3 mg, respectively, after the 6 h irrigation treatment.
CONCLUSION: Appropriate irrigation treatment methods such as water scheduling and volume will help increase fruit quantities and farmer incomes. It would be interesting to conduct further in-depth research on these fruits so that consumers can benefit from them as a food additive.

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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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원광대학교 Univ.Hawaii 건국대학교 경상대학교 강원대학교
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  • 3 건국대학교 (18건)
  • 4 경상대학교 (18건)
  • 5 강원대학교 (16건)
  • 6 전북대학교 (15건)
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