• 한국약용작물학회지
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• 제24권2호
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• pp.101-109
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• 2016

Background: The purpose of this study was to evaluate methods to reduce seeding expenses, thereby increasing farm income. This study investigated the effects of rain shelter controlled cultivation and adapted seeding times on the stable seed production of Scutellaria baicalensis Georgi. Methods and Results: Seed germination was conducted under 10 condition compose to control, water washing, cold storage at $4^{\circ}C$ for 15 days, seed sterilization with a benomyl pesticides, hormone treated seed by submerging in 100 ppm $GA_3$ with the cold storage at $20^{\circ}C$ and $25^{\circ}C$, darkness in a covered petridish and illuminated with a 1,500 Lux lamp. There were three cultivation type, open cultivation with non-woven fabric mulching, cultivation with a vinyl covering and rain sheltered in a plastic greenhouse. Sowing dates were April 27, May 18, June 7 and June 28, 2013. Plants were spaced 10 cm apart in rows 30 cm apart. Mixed oil cake fertilizer, $N-P_2O_5-K_2O$ (12-10-10) was applied at $600kg{\cdot}10a^{-1}$. Conclusions: Optimum germination occured in darkness at $25^{\circ}C$ and cold storage after submerging in $GA_3$. The highest seed yields ($4.5kg{\cdot}10a^{-1}$) occurred in the plastic greenhouse for the April 25 sowing. The highest root yield (17%) was found on April 1, under greenhouse conditions.

• 한국토양비료학회지
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• 제46권6호
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• pp.510-518
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• 2013

Corn was mainly cultivated in slope land during summer season when heavy rain falls so that soil loss occurs severely. Especially, soil disturbance and exposure of topsoil by conventional tillage intensifies soil loss by heavy rain. The aim of this study was to develop surface covering and tillage methods for reducing soil loss in corn cultivation. The experiment was conducted in 17% sloped lysimeter with 8 treatments including strip tillage after surface covering with rye residue, strip tillage after residue covering of several crops and sod culture, black polyethylene film covering after conventional tillage and control. Amount of runoff water and eroded soil, and corn growth were investigated. Amounts of runoff water in all plots except black polyethylene plot ranged from 152 to 375 $m^3\;ha^{-1}$, accounting for 13~32% of 1,158 $m^3\;ha^{-1}$ in control. Amount of eroded soil decreased by 94 to 99% (3 to 89 kg $ha^{-1}$) in plots of strip tillage after covering with crop residues compared to control with 1,739 kg $ha^{-1}$. Corn yields in plots of strip tillage after covering with crop residues ranged from 6.0 to 6.9 Mg $ha^{-1}$, while that of control was 6.5 Mg $ha^{-1}$. The results suggest that strip tillage methods after surface covering with crop residues are very effective on soil conservation of slope land in corn cultivation.

• 미생물학회지
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• 제47권3호
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• pp.179-187
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• 2011

고찰을 통해 난배양성 토양세균의 특징과 배양에 성공한 사례 및 성공하기 위해 알아야 될 지식들이 무엇인지에 대해 기술하였다. 먼저 배지는 목적한 세균이 토양에서 느리게 성장하다가 실험실의 빠른 성장조건으로 전환하도록 알맞게 선택되어야 하는데 일반적으로 기질, 질소 및 인 등의 농도를 낮게 조절해야 한다. 새로운 배지를 만들기 위해서는 분자생태학적 연구도 병행되어야 한다. 세균 세포 간 음성적 상호작용을 줄이기 위해 평판배양 시 접종량도 평판 당 세포수가 50개 이하로 조절해야 한다. pH나 염농도 같은 성장조건은 실제 환경조건과 맞춰야 하며 배양온도는 낮거나 다양하게 그리고 배양기간은 길게 잡아야 한다. 새로운 배지에서 분리될 수많은 토양 미생물 콜로니들 중에서 단지 몇 개만이 난배양성이므로 이들이 기존에 배양이 되지 않았던 미생물인지를 신속 정확히 검출하는 방법이 필요하다. 또한 많은 토양세균들이 군집 내에서 서로 협력하며 살아가기 때문에 공동배양이나 상등액을 이용해서 토양 미생물을 농화증식하고 이를 순수 분리하면 배양에 성공할 수 있을 것이다.

• 사상체질의학회지
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• 제22권2호
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• pp.1-15
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• 2010

1. Objectives: This research aims to study the general overview of the theories on the covetous desire and the relevant theories on cultivation mentioned in "Donguisusebowon (東醫壽世保元): Theories on Nature and Conduct (性命論)". 2. Methods: The theories concerning the covetous desire introduced in Dong-Mu's manuscripts, including "Gyukchigo 格致藁)", "Yougocho (遺稿抄)", "Dongmuyougo (東武遺稿)" and "Jaejungsinpyun (濟衆新編)", were comprehensively reviewed. Furthermore, the significance of the theories on the covetous desire and the relevant theories on self-cultivation were studied within the context of "Donguisusebowon(東醫壽世保元): Theories on Nature and Conduct (性命論)". 3. Results and Conclusions: 1) Among the four covetous desires (selfishness (私心), indiscretion (放心), indolence(逸心), acquisitiveness (慾心)), selfishness and acquisitiveness are the interpersonal components that deal with the relationship between individuals, whereas indiscretion and indolence are the intra-personal or self-concerned components that deal with the internal desires within the individual. 2) In the early concepts on the quaternity explaining the perspective on the human being as introduced in Dongmu's earlier manuscripts, the four covetous desires are thought of as the most important etiological components, that are also intimately related to the theories of self-cultivation. 3) Among the concepts introduced in "Donguisusebowon (東醫壽世保元): Theories on Nature and Conduct (性命論)", viciousness (邪心) and negligence (怠心) are primary, intra-personal (self-concerned) desires that are henceforth matched to indiscretion and indolence, respectively, while selfishness (arrogance, assertiveness, indiscrimination and exaggeration (驕矜伐夸)) and acquisitiveness (violation, extravagance, slothfulness and stealthiness(奪侈懶竊)) are secondary, interpersonal desires. 4) 'Preserving the mind (存其心)' and 'rectifying the body (修其身)' are Methods of overcoming viciousness (indiscretion) and negligence (indolence), the intrapersonal desires, while 'nurturing the nature (養其性)' and 'propping the course (立其命)' are Methods of eliminating selfishness and acquisitiveness, the interpersonal desires, which ultimately each leads to the completion of Nature (性) and Conduct/Course (命).

• 한국약용작물학회지
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• 제28권4호
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• pp.254-259
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• 2020

Background: Centella asiatica is a well-known medicinal plant having a wound healing effect. In this study, the growth, asiaticoside content, and antioxidant components and activity were investigated in C. asiatica resources under different cultivation and irrigation conditions. Methods and Results: The cultivation and irrigation methods were divided as greenhouse and open field, and sprinkler and sub irrigation. respectively. Growth characteristics were measured in aerial parts of C. asiatica. Asiaticoside content was analyzed using high performance liquid chromatography. Total polyphenol, total flavonoid and 2,2-diphenyl-1picryl hydrazyl (DPPH) radical scavenging activity were analyzed for antioxidant activities. Growth was higher under greenhouse and sub irrigation than open field and sprinkler conditions. In the leaves, asiaticoside content was 53.45 mg/g (open field) and 34.38 mg/g (sub irrigation), total polyphenol was 41.14 mg/g (open field) and 25.73 mg/g (sub-irrigation), and total flavonoid was 27.26 mg/g (open field) and 23.72 mg/g (sub-irrigation). DPPH radical scavenging activity in the leaves was 85.97 mg·ascorbic acid equivalent (AAE)/g (open field) and 54.83 mg·AAE/g (sub irrigation). Conclusions: Asiaticoside and antioxidant components and activity were not accompanied with high yield, although high growth was observed under greenhouse conditions. Therefore, cultural requirements of C. asiatica should be sufficiently considered to suit each purpose.

• 인간식물환경학회지
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• 제23권4호
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• pp.423-432
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• 2020

Background and objective: Traditional farming is winning recognition as a sustainable alternative farming method. As urban farming increases in South Korea, it is crucial to develop more sustainable farming techniques. Gyeonjongbeop is the traditional farming method introduced in the Joseon period. This study was conducted to propose a productive garden model suitable for urban farming through the interpretation of traditional farming methods contained in Imwongyeongjeji Bolliji and to test the model on an actual field. Methods: Using the design and cropping system of Gyeonjongbeop as the research materials, we reviewed its tillage and cultivation and examined the applicability. We proposed a modified method by extracting parts applicable to urban farming. According to the methods, we created a garden with ridges and furrows, cultivated proper vegetables, and evaluated their growth. Results: Raphanus sativus, Allium fistulosum L., Brassica juncea, and Spinacia oleracea grown on ridges showed higher growth than those grown on a conventional flat field. The growth of Hordeum vulgare var. hexastichon and Triticum aestivum L. on furrows was also slightly higher. This proved that the method could make up for the deficiencies of barley and wheat that are weak against winds and cold and are easily destroyed by the spring rains. Conclusion: Ridge and furrow cultivation derived from Gyeonjongbeop can be an efficient urban farming system compared to the conventional cultivation in flat fields. The system can use fallow lands in winter for year-round urban farming. In addition, the application of the traditional farming system can enhance the humanistic value of urban farming.

• 복식문화연구
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• 제22권1호
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• pp.16-27
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• 2014

This study investigated the characteristics of and changes in hemp textile production practices at Gurye in Jeollanam-do in modern times. To do this, in this study, both a literature review and fieldwork research were utilized as research methods. The literature review focused on Gurye's hemp data, and the fieldwork research involved two separate trials. Male and Female residents of Gurye who had experience in the area of hemp production from the 1920s to the 1980s participated in this study. The results were as follows. First, regarding hemp fiber cultivation in Gurye, hemp cultivation continued to the 1970s and there were no changes in hemp cultivation practices during the Japanese colonial-era. Second, there have been very important changes in hemp kilns over time. In the 1950s, there were both single-body kilns and separate-body kilns in Gurye. Later, specifically in the 1950s, a new type of kiln using an iron pot appeared, and the most modern kilns were concrete structures. Third, in Gurye, women cooperatively removed hemp husks immediately after stemming, subsequently bleaching the hemp by soaking it in lye or caustic soda. Over time, there have been changes in ash types and in soaking periods. Fourth, loom types changed from the traditional Korean back-strap loom to the treadle loom in the 1930s- to 1940s. Fifth, since the 1970s, the hemp textile output levels of Gurye have been reduced due to the westernization of clothing styles, the inflow of Chinese hemp fiber and government regulations pertaining to hemp cultivation.

• 한국환경보건학회지
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• 제43권4호
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• pp.280-297
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• 2017

Objectives: We assessed pesticide exposure levels according to cultivation and crop type and investigated agricultural factors related to exposure. Methods: The participants, 341 male and 127 female farmers, were divided into three groups by cultivation crop type: chili greenhouse, cucumber greenhouse, and orchard. We collected questionnaires, socioeconomic characteristics and agricultural factors, and spot urine. Pesticide exposure was examined using four organophosphate and four pyrethroids urinary metabolites: dimethylphosphate, dimethylthiophosphate, diethylphosphate, diethylthiophosphate, Cis and Trans-3-(2-2dichlorovinyl)-2, 2-dimethylcyclopropane carboxylic acid, 3-phenoxybenzoic acid (3-PBA), Cis-3-(2-2dibrmovinyl)-2, and 2-dimethylcyclopropane carboxylic acid. Each metabolite was summed ${\Sigma}DAP$ and ${\Sigma}PY$ according to the chemical class. Results: Urinary metabolite detection rates and concentrations were similar between the greenhouse groups, but the orchard group was different. Similar 3-PBA detection rates were found in the three groups, but the geometric mean was very high in the orchard group compared to the two greenhouse groups. 3-PBA concentration in the orchard group was $4.11{\mu}g/g$ creatinine; the chili and cucumber greenhouse groups were 1.27 and $1.16{\mu}g/g$ creatinine, respectively. ${\Sigma}DAP$ was significantly associated with cultivation crop type and seasonal variation, but ${\Sigma}PY$ was not relevant. Conclusions: Our results suggest that cultivation and crop type may be correlated with different pesticide types and exposure levels. Furthermore, seasonal factors were related as potential factors influencing the level of organophosphate metabolites, but not for pyrethroid metabolites.

• Journal of Ginseng Research
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• 제40권1호
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• pp.68-75
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• 2016

Background: The study of phenolic compounds profiles and antioxidative activity in ginseng fruit, leaves, and roots with respect to cultivation years, and has been little reported to date. Hence, this study examined the phenolic compounds profiles and 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free-radical-scavenging activities in the fruit, leaves, and roots of Korean ginseng (Panax ginseng Meyer) as a function of cultivation year. Methods: Profiling of 23 phenolic compounds in ginseng fruit, leaves, and roots was investigated using ultra-high performance liquid chromatography with the external calibration method. Antioxidative activity of ginseng fruit, leaves, and roots were evaluated using the method of DPPH free-radical-scavenging activity. Results: The total phenol content in ginseng fruit and leaves was higher than in ginseng roots (p < 0.05), and the phenol content in the ginseng samples was significantly correlated to the DPPH free-radical-scavenging activity ($r=0.928^{****}$). In particular, p-coumaric acid ($r=0.847^{****}$) and ferulic acid ($r=0.742^{****}$) greatly affected the DPPH activity. Among the 23 phenolic compounds studied, phenolic acids were more abundant in ginseng fruit, leaves, and roots than the flavonoids and other compounds (p < 0.05). In particular, chlorogenic acid, gentisic acid, p- and m-coumaric acid, and rutin were the major phenolic compounds in 3e6-yr-old ginseng fruit, leaves, and roots. Conclusion: This study provides basic information about the antioxidative activity and phenolic compounds profiles in fruit, leaves, and roots of Korean ginseng with cultivation years. This information is potentially useful to ginseng growers and industries involved in the production of high-quality and nutritional ginseng products.

• 한국정보통신학회논문지
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• 제20권11호
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• pp.2167-2171
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• 2016

농작물의 재배 목적이 생산량의 목적에서 품질향상으로 변화되어져 왔다. 실외 환경을 농작물 재배에 대해 영향을 줄이기 위해 농가들이 비닐하우스 재배 방식을 많이 사용하고 있다. 그 가운데, 버섯은 고영양이면서, 풍부한 비타민을 함유하고 있는 건강식품으로서 많은 관심을 받고 있다. 이로 인해 버섯 산업은 새로운 유망산업으로 떠오르고 있다. 이를 위해 버섯에 대한 재배방식은 단순한 수공 재배모드에서 자동화된 공장화된 재배모드로 발전해오고 있다. 이와 같이 버섯의 생산 과정에서 요구되는 생육환경제어는 버섯의 산출량 및 품질에 직접적인 영향을 미친다. 이로 인해 농가 비닐하우스 안에 온도를 수시 조정할 필요가 있다. 지금은 대부분 농가들 여전히 온도계로 온도를 측정하고 있다. 본 논문에서는 이런 문제를 해결하기 위해 자동 온도 조절 환경 구축해서 온도를 실시간으로 측정할 수 있으며 농가 생산효율 향상시키고 불필요한 노동력을 감소시킬 수 있다.