상치의 시비조건에 따른 상치내 몇 가지 미량원소의 함량에 관한 연구

권오달 ( Kwon O-dal ),정근희 ( Chung Keun-hi ),이진희 ( Lee Jin-hi ) 한국유기농업학회 1998 韓國有機農業學會誌 Vol.7 No.1

In order to study the effects of chemical fertilizer and organic fertilizer on the toxic mineral content in the absence or presence of the wood extraction, the lettuce an experirrent of fatal 20 treatments was conducted far a period of 10 weeks. The results obtained from the experiment are summarized as follows : 1. The mineral contents of the lettuce in the wood extraction-treated group and the wood extraction non-treated group showed no conspicious differences. 2. There are no prominent differences in the mineral contents(Chromium, Nickel, Lead, and Aluminium) in the lettuce between the organic fertilized group and the lettuce raised in the chemical fertilized group. 3. Mercury was not detected in all samples of lettuces raised in all treatments. 4. Cadmium contents in the lettuce samples were increased as the amount of organic fertilizer was increased from 25% to 100%.

전기자극(電氣刺戟) 처리시간(處理時間)이 적환(赤丸)20일 무의 수량형질(收量形質) 및 가식부내(可食部內) NO₃^- 함량(含量)에 미치는 영향(影響)

권오달 ( Kwon O-dal ) 한국유기농업학회 2002 韓國有機農業學會誌 Vol.10 No.1

The results of the experiment about the effect of the length of electrical stimulation treatment time on the yield components and NO₃^- content in edible parts of 2 cherry type radishes(Raphanus sativas L.) were like followings. 1. The 2 hours electrical stimulation promoted the length of leaf and the enlargement of the root diameter of ‘Comet’ and ‘Sakuranbo’ cultivars, and their root diameters were increased by 14.7% and 12.8% respectively than that of the control. 2. The plot which showed the highest root fresh weight was the 2 hours stimulation plot in ‘Comet’ and 8 hours stimulation plot in ‘Sakuranbo’, and these results were approximately 39% higher than that of the control. 3. All of the electrically stimulated plots of ‘Comet’ and ‘Sakuranbo’ showed higher NO₃^- content in roots than the control. And the amount of NO₃^- in their roots showed a remarkable positive correlation with the root diameter, the root fresh weight and the total fresh weight.

상치의 시비조건에 따른 상치내 몇 가지 필수 무기원소들의 함랑에 관한 연구

권오달 ( Kwon O-dal ),이진희 ( Lee Jin-hi ),최순남 ( Choi Soon-nam ),신영미 ( Shin Young-mi ),정근희 ( Chung Keun-hi ) 한국유기농업학회 1999 韓國有機農業學會誌 Vol.7 No.2

To study the effects of chemical and organic fertilizer within the contents of essential elements in the lettuce, in the absence or presence of wood extraction, an experiment was conducted for a period of 10 weeks. The results obtained from the experiment are summarized as follows : 1. The iron contents in the lettuce grown in the chemical fertilized group, were different from those in the organic fertilized group, when the wood extraction was treated. The iron contents in the lettuce increased, due to the wood vinegar treatments, but the modes and degrees were not consistent the various kinds of lettuce. 2. Calcium contents in the lettuce were also increased by wood vinegar treatments, but the modes and degrees were not consistent with the various kinds of lettuce. On the other hand, the Calcium contents in the lettuce grown in the organic fertilized group were reduced by the wood vinegar treatments. 3. The mineral contents within other elements(Manganese, Copper, Zinc) in lettuce, is not variable according to the treatments, or the species of the lettuce.

강남콩品種의 生育, 收量 및 根瘤形成에 미치는 멀칭 材料의 効果

權五達(Kwon O Dal),李政明(Lee Jung Myung) 한국원예학회 1984 Horticulture, Environment, and Biotechnology Vol.25 No.3

자연실온 및 변온조건에서 제3세대 크리핑 벤트그래스 신품종의 발아특성 및 일일 발아패턴 비교

김경남,권오달,심상렬,윤중서,박소향,Kim, Kyoung-Nam,Kwon, O-Dal,Shim, Sang-Ryul,Yoon, Jung-Seo,Park, So-Hyang 한국잔디학회 2011 한국잔디학회지 Vol.25 No.1

본 실험은 자연 실온 환경에서 크리핑 벤트그래스 신품종의 초기 발아특성 및 발아패턴을 조사하고, 그리고 변온 및 자연실은 환경에서의 그 차이점을 비교 분석해서 실무 시공에 응용할 수 있는 기초자료를 파악하고자 시작하였다. 공시재료는 크리핑 벤트그래스 7품종이었으며, 일일 발아패턴 및 누적 발아패턴을 1일 간격으로 조사하였다. 크리핑 벤트그래스 종자의 발아율, 발아패턴 및 발아특성은 온도 조건 및 품종에 따라 차이가 크게 나타났다. 공시 품종 모두 최초 발아는 ISTA 변온환경 에서 치상 후 4-5 일 사이에 시작되었지만, 자연 실온 환경에서는 대부분 품종이 ISTA 변온보다 2~3일 늦은 6~8일 사이에 시작되었다. 최초 발아 시 발아율은 ISTA 변온에서 일반적으로 5~25% 정도였고, 'Penn A-1', 'Penncross' 및 'Penn A-4' 품종의 최초 발아율은 50~70% 정도로 초기 발아가 대단히 왕성하였다. 하지만 자연 실온 환경에서 최초 발아율은 일반적으로 5~10% 정도였으며, 'Penncross', 'L-93' 및 'Penn A-4' 품종은 20~50% 정도로 초기 발아 특성이 대단히 왕성하였다. 크리핑 벤트그래스에서 발아율 50% 도달 기간은 ISTA 변온에서는 치상 후 4~10일 사이에 나타났고, 자연 실온에서는 품종에 따라 ISTA 변온보다 2~5일 정도 늦은 치상 후 6~15일 사이에 나타났다. 발아율 85% 도달 기간은 ISTA 변온에서는 치상 후 5.90~11.75일 사이였으며, 가장 빠른 종류는 'Penn A-1' 품종이었다. 하지만 자연 실온에서는 ISTA 변온보다 다소 늦은 치상 후 7.95~12.50일 사이였고, 가장 빠른 종류는 'L-93' 품종이었다. 그리고 온도 조건에 관계없이 기준 발아율 도달 기간이 가장 느린 품종은 ISTA 변온 및 자연 실온에서 각각 11.75일 및 12.50일로 나타난 'T-1' 품종이었다. 본 실험 결과 나타난 이러한 발아특성 비교 데이터는 골프장 등 잔디밭 조성 시 실무적인 기초 자료로 유용하게 활용될 수 있을 것이다. This study was conducted to investigate early germination characteristics and germination pattern of new cultivars of creeping bentgrass (CB, Agrostis pall/stris Huds.) under natural room temperature conditions and to analyze differences between alternative and natural conditions. Seven cultivars of CB were tested in the study. Daily and cumulative germination patterns were measured and analyzed on a daily basis. Significant differences were observed in germination pattern, days to the first germination, days to 50% germination, days to 85% germination, and germination rate among cultivars under different environments. The first germination in all entries was initiated between 4 and 5 days after seeding (DAS) under alternative conditions, while between 6 and 8 DAS under natural conditions, being 2 to 3 days later as compared with that of alternative conditions. As for the first germination percentage, it was generally 5 to 25% under alternative conditions. However, 'Penn A-1', 'Penncross', and 'Penn A-4' cultivars showed a vigorous germination, producing 50 to 70%. Under natural room temperature conditions, it was 5 to 10% for the most entries, except 'Penncross', 'L-93', and 'Penn A-4' cultivars which vigorously produced 20 to 50%. Days to the 50% germination in CB resulted in 4 to 10 DAS under alternative conditions, while 6 to 15 DAS under natural conditions, being 2 to 5 days later than under alternative conditions. Days to the 85% germination were 5.90 to 11.75 DAS under alternative conditions and 7.95 to 12.50 DAS under natural conditions. 'Penn A-1' and 'L-93' were the fastest cultivars under alternative and natural conditions, respectively. Regardless of the temperature conditions, the longest cultivar in germination was 'T-1', being over 11 DAS. In-depth comparative data on germination characteristics and germination patterns among CB cultivars would be usefully applied for a practical CB turf establishment in golf course construction etc.

롤투롤 인쇄전자의 중첩정밀도 향상을 위한 비전 제어

최종근(Jong-Guen Choi),김형선(Hyung-Sun Kim),권오달(O-Dal Kwon) 산업기술교육훈련학회 2021 산업기술연구논문지 (JITR) Vol.26 No.1

Printed electronics involves the process of manufacturing electronic components, such as electronic circuits, sensors, devices, ultrathin films, and radio-frequency identifications using printing technology. Conductive electronic ink is used in these processes to form circuits similar to gravure printing or high-speed inkjet on the web in the form of plastic or thin films. Among the various techniques used for printing electronics, superposition printing control technology is the most valuable for forming multilayer circuits and determining the performance and added value of the product. This method of measuring superposition accuracy using charge-coupled device vision cameras is superior to other methods, such as infrared and ultrasonic sensors, in precision improvement because the vision system can simultaneously measure the positions of the web s direction and cross-direction travel. In this study, a control method using three vision cameras was installed before and after the second -stage-printing substrate rolling in a roll-to-roll printing electronic system to correct the superposition error. The application of the proposed method effectively improved the printing process precision. With superposition control using the vision cameras, superposition precision of up to 10-50 μm in two directions was achieved. It was shown that the precision of the roll-to-roll process could be enhanced effectively using this approach.

施肥水準이 강남콩의 生育, 莢收量 및 根瘤形成에 미치는 影響

權五達,李政明 慶熙大學校 1984 論文集 Vol.13 No.-

This experiment was conducted to investigate the effect of varying levels of fertilizer on the growth, pod yield, and root nodule development in pet-grown snapbean cultivars. Early flowering rate was low in 'Pinto' and 'White Half Runner' and also reduced by increased level of fertilizers in most cultivars. However, fertilizer levels did not appear to have any particular pattern on pod yield distribution among 3 harvest dates. Total pod yield and pod number per plant were high in 'White Half Runner' and 'Pinto' and in 2g/pot/week (N:P_2O_5:K_2O=17:21:17) fertilized plants even though cultivars showed different response to fertilizer levels. Shoot growth was high in 2g-fertilized plants and in 'Stringless Green pod' cultivar, which showed the lowest pod yield and the lowest green pod productivity (pod to shoot ratio). The formation of root nodules was significantly reduced by fertilizer application and also influenced by cultivars.

施肥水準이 강남콩의 生育, 莢收量 및 根瘤形成에 미치는 影響

權五達,李政明 경희대학교 부설 식량자원개발연구소 1984 硏究論文集 Vol.5 No.-

This experiment was conducted to investigate the effect of varying levels of fertilizer on the growth, pod yield, and root nodule development in pot-grown snapbean cultivars. Early flowering rate was low in 'Pinto' and 'White Half Runner' and also reduced by increased level of fertilizers in most cultivars. However, fertilizer levels did not appear to have any particular pattern of pod yield distribution among 3 harvest dates. Total pod yield and pod number per plant were high in 'White Half Runner' and 'Pinto' and in 2g/pot/week (N:P_(2)O_(5):K_(2)O=17:21:17) fertilized plants even though cultivars showed different response to fertilizer levels. Shoot growth was high in 2g-fertilized plants and in 'Stringless Green Pod' cultivar, which showed the lowest pod yield and the lowest green pod productivity (pod to shoot ratio). The formation of root nodules was significantly reduced by fertilizer application and also influenced by cultivars.

種實用 강낭콩 品種의 特性比較 및 收量構成要素에 關한 硏究

權五達,李政明 경희대학교 부설 식량자원개발연구소 1987 硏究論文集 Vol.8 No.-

Thirty six cultivars and 39 lines of field bean (Phaseolus vulgmis L.) were grown at 3 different locations to, compare the plant characteristics and seed yield and several yield components which can be directly related to the economical yield. Among the cultivars and lines tested, Peru 34, Poriosentetico, Suchitan, Turialba, and Emp. 83 were found to be very late-maturing and high yielding with higher seed wt. increase per day per square meter. Seed yield of some early maturing cultivars and lines, such as Limeiight, Goiano, and Wis (RRR)-777, was very low. The maturity, or days required to pod maturity, of field beans was found to be positively correlated with days to flowering and duration of pod maturity. Daily increment of seed weight was more influenced by the days to the first flowering rater than days to maturity. Days required to the first flowering varied greatly depending upon cultivars and lines with a range of 28.3 to 56.1 days. Days to pod maturity showed greater variations than other parameters, ranging from 7.0 to 26.7 days. Wide variations in seed and plant characteristics, days to maturity, economical and biological yield, and others, were found among tested field beans, which could be utilized for the improvement of cultivars in Korea through effective selection and/or as donors of useful germplasm.