광부족 조건이 딸기의 생육 및 생산성에 미치는 영향

이규빈,이정은,제병일,이용재,박영훈,최영환,손병구,강남준,강점순,Lee, Gyu-Bin,Lee, Jung-Eun,Je, Byoung-Il,Lee, Yong-Jae,Park, Young-Hoon,Choi, Young-Whan,Son, Beung-Gu,Kang, Nam-Jun,Kang, Jum-Soon 한국환경과학회 2020 한국환경과학회지 Vol.29 No.2

The purpose of this study was to investigate the effect of shading on the growth and productivity of strawberries. Photosynthesis was normally achieved under natural light without shading treatment, and vegetative growth of under- and aboveground part of strawberry plants were excellent. Strawberry fruit productivity and quality were different depending on shading conditions. In natural light, they were improved possibly by balanced vegetative and reproductive growth. However, under light-shading conditions with insufficient sunshine, photosynthetic activity deteriorated and carbohydrate production was therfore inadequate; this adversely affected plant height and quality. The negative effects were more pronounced at 50% shading condition. Shading treatments resulting in insufficient sunshine had a detrimental impact on plant productivity and growth; this implies that proper shading conditions could heip improve yield and fruit quality.

하위 적엽처리가 딸기의 생육 및 생산성에 미치는 영향

이규빈,이정은,제병일,이용재,박영훈,최영환,손병구,강남준,강점순,Lee, Gyu-Bin,Lee, Jung-Eun,Je, Byoung-Il,Lee, Yong-Jae,Park, Young-Hoon,Choi, Young-Whan,Son, Beung-Gu,Kang, Nam-Jun,Kang, Jum-Soon 한국환경과학회 2020 한국환경과학회지 Vol.29 No.3

The purpose of this study was to investigate the effects of defoliation treatment on the growth and yield of strawberries. There was a remarkable growth in the above-ground part and root of untreated strawberry plants possibly due to higher amount of photosynthesis, while overall plant growth was suppressed as the level of defoliation treatment increased. In both the "Seolhyang" and "Maehyang" cultivars examined, defoliation treatment resulted in small fruits and a low number of fruits per plant. Notably, 50% defoliation significantly reduced the number of fruits per plant to 8.2, compared to 13.8 in untreated plants. Defoliation treatment also negatively influenced the fruit quality including color, sugar content, and solid-acid rate. However, no significant changes in fruit firmness was observed in either cultivar. Therefore, retaining enough leaves without defoliation treatment can be important to increasing fruit yield, producing high quality fruits and saving labor required for defoliation.

폭염처리에 의한 감자의 수량성과 품질 변화

이규빈,최장규,박영은,정건호,권도희,조광룡,천충기,장동칠,진용익,Lee, Gyu-Bin,Choi, Jang-Gyu,Park, Young-Eun,Jung, Gun-Ho,Kwon, Do-Hee,Jo, Kwang-Ryong,Cheon, Chung-Gi,Chang, Dong Chil,Jin, Yong-Ik 한국농림기상학회 2022 한국농림기상학회지 Vol.24 No.3

Due to abnormal weather conditions caused by climate change, natural disasters and damages are gradually increasing around the world. Global climate change as accompanied by warming is projected to exert adverse impact on production of potato, which is known as cool season crop. Even though, role of potato as a food security crop is expected to increase in the future, the climate change impacts on potato and adaption strategies are not sufficiently established. Therefore, this study was conducted to analyze the damage pattern of potatoes due to high temperature treatment and to evaluate the response of cultivars. T he high temperature treatment (35~38℃) induced heat stress by sealing the plastic house in midsummer (July), and the quantity and quality characteristics of potatoes were compared with the control group. T otal yield, marketable yield (>80 g) and the number of tubers per plants decreased when heat treatment was performed, and statistical significance was evident. In the heat treatment, 'Jayoung' cultivar suffered a high heat damage with an 84% reduction in yield of >80 g compared to the control group. However, in Jopung cultivar, the decrease was relatively small at 26%. Tuber physiological disturbances (Secondary growth, Tuber cracking, Malformation) tended to increase in the heat stress. Under heat conditions, the tubers were elongated overall, which means that the marketability of potatoes was lowered. T he tuber firmness and dry matter content tended to decrease significantly in the heat-treated group. T herefore, the yield and quality of tubers were damaged when growing potatoes in heat conditions. T he cultivar with high heat adaptability was 'Jopung'. T his result can be used as basic data for potato growers and breeding of heat-resistant cultivars.

폐코이어를 재활용한 혼합 유기질 비료가 배추와 상추의 생육에 미치는 영향

이규빈 ( Gyu Bin Lee ),박은지 ( Eun Ji Park ),박영훈 ( Young Hoon Park ),최영환 ( Young Whan Choi ),서정민 ( Jeong Min Suh ),강점순 ( Jum Soon Kang ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.9

The present study was conducted to find a way to recycle the coir substrate by investigating changes in its physical and chemical properties based on the number of use year. Specific gravity of unused coir substrate was 0.212 g/cm3 , while it was higher for the substrate used for 2 years. Porosity was different depending on the number of use year. The porosity of unused substrate was 51.9%, but it increased to 68.6% after used for 2 years. In general, physical and chemical properties were better in the coir substrate used for 2 years than in unused one. The number of leaves, leaf area, flesh weight and dry weight of oriental cabbage and lettuce were higher in coir substrate used for 2 years than those in unused one. Whereas, no significant difference was observed between the substrates used for one year and 2 years, indicating that the one time-used wast substrate could be recycled for cultivating vegetables. Growth of the vegetables was improved when organic fertilizer composed of complex organics with different mixing ratios was provided to the coir substrate, compared to untreated plot. The optimum mixing ratio of the wast substrate and complex organics was 2:8(v/v) for fertilization using wast coir substrate. Therefore, coir substrate generally wasted after being used for one time was reuseable by supplying organic fertilizer.

객체 탐지 모델을 활용한 전기 아크 위험성 예측 시스템 개발

이규빈(Gyu-bin Lee),김승연(Seung-yeon Kim),안동혁(Donghyeok An) 한국스마트미디어학회 2020 스마트미디어저널 Vol.9 No.1

전기에너지에 대한 높은 의존도 때문에 국내에서 발생하는 화재 중 전기화재가 상당한 비중을 차지한다. 국내에서 발생하는 전기화재 4건 중 3건이 전선의 단락이나 접촉 불량에 의한 전기 아크에 의해 발생했다. 전기 아크란 절연체 사이에서 발생하는 전기적 전류의 방전 현상으로 순간적으로 상당한 열을 내뿜는다. 아크에 의한 전기 화재를 줄이기 위해서 본 연구에서는 전기 아크 위험성 예측을 목표로 한다. 아크 감지기에서 아크 데이터를 수집하고 시간순대로의 아크 데이터를 기반으로 그래프로 변환하였다. 머신 러닝의 데이터 학습에 서로 다른 시계열 데이터의 수로 변환한 그래프들을 사용하였다. 생성된 학습 모델의 성능을 측정하기 위해서 테스트 데이터를 기반으로 평가를 진행하였다. 결과에서 예측 시 사용하는 시계열 아크 데이터의 수가 20개일 때 예측률이 86%로 우수함을 확인하였다. Due to the high dependence on electric energy, electric fires make up a significant portion of fires in Korea. Electric arcs by short circuits or poor contact cause three of four electrical fires. An electric arc is a discharge phenomenon of electrical current between the insulators, which instantaneously produces high temperature. In order to reduce the fire due to electric arc, this study aims to predict the electric arc risk. We collected arc data from the arc detectors and converted into graphs based on temporal arc data. We used machine learning for training converted graph with different number of temporal arc data. To measure the performance of the learning model, we use the test data. In the results, when the number of temporal arc data was 20, the prediction rate was high as 86%.

고품질 땅콩나물 생산을 위한 최적 재배수온 조건 확립

이규빈 ( Gyu Bin Lee ),박은지 ( Eun Ji Park ),허유 ( You Heo ),손병구 ( Beung Gu Son ),최영환 ( Young Whan Choi ),이용재 ( Yong Jae Lee ),박영훈 ( Young Hoon Park ),서정민 ( Jeong Min Suh ),강점순 ( Jum Soon Kang ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.6

The present study was conducted to development mass production methods for peanut sprouts that is considered as a field of blue ocean among the agricultural products. ``Jopyeong`` was the best as a major cultivar for peanut sprouts production. The manual for the production of high-quality peanut sprouts is as following. Germination temperature appropriate for production of high-quality peanut sprouts was 27℃. Peanut sprouts at the growth stage of 8th day, and older plants with advanced growth showed deteriorated merchantable and eating quality. Resveratrol compound was not found in the seeds, but its highest amount was detected from 9-day old sprouts. The best water temperature applicable to high quality peanut sprout production was 25℃. The growth of peanut sprout was inhibited by the high temperatures above 35℃ and low temperatures below 15℃.

일조부족 조건에서 딸기의 생리장해 및 생산성 검정

이규빈(Gyu Bin Lee),이정은(Jung Eun Lee),강점순(Jum Soon Kang) 한국원예학회 2018 한국원예학회 학술발표요지 Vol.2018 No.5

땅콩나물 생산에서 세근발생 억제 조건에 관한 연구

이규빈(Gyu-Bin Lee),박은지(Eun-Ji Park),허유(You Heo),손병구(Beong-Gu Son),강점순(Jum-Soon Kang) (사)한국생물환경조절학회 2016 생물환경조절학회지 Vol.25 No.3

본 연구는 고품질 땅콩나물 생산을 위해서 세근발생을 억제시키는 생장조절제의 처리 효과를 검정하기 위해 수행되었다. 땅콩나물의 세근발생억제제인 참시루와 6BA를 ‘조평’과 ‘베트남’땅콩에 처리하면 세근발생억제제의 처리농도가 높을수록 세근 발생수는 감소하였다. 그 효과는 6BA가 참시루보다 우수하였고, ‘베트남’ 땅콩보다는 ‘조평’에서 세근발생억제 효과가 명확하였다. 참시루 및 6BA의 배양용액을 1일간 간격으로 교체하면 배양용액을 교체하지 않는 처리구에 비해 부패균 활동을 억제시켜 하배축 생장을 촉진시킨 반면 세근발생은 억제시켜 고품질 땅콩나물 생산이 가능하였다. 땅콩나물 재배의 배양용액에 GA3와 참시루를 혼용하여 처리하면 땅콩나물의 생육을 향상시켰고, 적정 처리조건은 GA3 50mg·L<SUP>-1</SUP> + Chamsiru 8.40mg·L<SUP>-1</SUP> 처리였다. The present study was conducted to establish the suppression condition of lateral root development for producing high-quality peanut sprouts. The result of Chamsiru or 6BA treatment on peanut sprouts ‘Jopyeong’ and ‘Vietnam’ showed that the higher concentration of the solutions showed the better effect for suppressing lateral root development, regardless of the kinds of lateral root inhibitor. Compared to Chamsiru, 6BA showed better effect for suppressing lateral root development, and the effect was more obvious for ‘Jopyeong’ than ‘Vietnam’. The alternant irrigation of Chamsiru and 6BA solution could produce high-quality peanut sprouts by inhibiting bacteria activity in solution and promoting of hypocotyl and root growth, while suppressing the lateral root development. The treatment of mixture solution of GA3 and Chamsiru improved the overall growth of peanut sprouts, and the effect was the highest in the treatment of ‘GA3 50mg·L<SUP>-1</SUP> + Chamsiru 8.40mg·L<SUP>-1</SUP>’.

코이어배지의 재활용이 채소 작물의 생육에 미치는 영향

이규빈 ( Gyu-bin Lee ),박은지 ( Eun-ji Park ),박영훈 ( Young-hoon Park ),여경환 ( Kyung-hwan Yeo ),이한철 ( Han-cheol Rhee ),강점순 ( Jum-soon Kang ) 한국환경과학회 2016 한국환경과학회지 Vol.25 No.8

The present study was investigated the effect of recycled coir organic substrates on the growth of different vegetable crops. The recycled coir had better physical and chemical properties than the new coir. The growth of tomato plant was better on the coir substrate that had been used for 2 years than that on the new coir substrate. The average number of tomato fruits was 108 on the new coir substrate, while it was 179 and 165 on the coir substrate used for 1 and 2 years, respectively. The growth of cherry tomato plant was also better on the coir substrate used for 2 years than that on the new coir substrate. The average number of cherry tomato fruits was 43 on the new coir substrate, while it was 206 and 164 on the coir substrate used for 1 and 2 years, respectively. The growth of brussel sprout was better on the coir substrate used for 3 years than that on the new coir substrate and the average number of brussel sprout leaves was 26.8 on the new coir substrate, while it was 34.3 on the coir substrate used for 3 years. The growth of Korean cabbage improved on the coir substrate used for 1 years compared to the new coir substrate and the number of leaves was 15.1 on the new coir substrate, while it was 24.3 on the coir substrate used for 1 year. Thus, used coir can be recycled to improve vegetable yields compared to using new coirs.

이상 저온조건이 딸기의 생육, 수량 및 생리활성 성분에 미치는 영향

이규빈 ( Gyu-bin Lee ),최윤의 ( Yun-ui Choe ),박은지 ( Eun-ji Park ),왕자옥 ( Ziyu Wang ),이매 ( Mei Li ),이커 ( Ke Li ),박영훈 ( Young-hoon Park ),최영환 ( Young-whan Choi ),강남준 ( Nam-jun Kang ),강점순 ( Jum-soon Kang ) 한국환경과학회 2017 한국환경과학회지 Vol.26 No.3

The present study aimed to investigate the effects of low temperature on the growth, yield, quality, and biologically active compounds of strawberry and obtain basic information for developing a technology for stable growth of strawberry in greenhouses. Growth of strawberry, including leaf number, area, and length, plant height, and dry weight was better at the optimum growth temperature of 20℃than at a lower temperature of 15℃. At the low temperature of 15℃, the cultivar `Maehyang` was more tolerant and displayed better growth rate than `Seolhyang`. At 15℃, the fruit production per week and fruit weight was lower than that at 20℃. In contrast, fruit length and diameter were not significantly different between the two growth temperatures. Growth temperature also did not affect the fruit color index, Hunter L, a, b value, or fruit firmness. However, the sugar content of strawberries grown at 15℃was higher by 0.8 and 1.5 Brix for `Seolhyang` and `Maehyang`, respectively, than of those grown at 20℃. There was no difference in the content of fisetin, a biologically active compound, for `Seolhyang` at both growth temperatures, however, the fisetin content of `Maehyang` was higher at 20℃ than at 15℃. Cinchonine and ellagic acid content of `Seolhyang` was higher at 20°C than at 15℃, whereas that of `Maehyang` was higher at 15℃ than at 20 . Quercetin content showed no significant differences with respect to growth temperature, however, it tended to increase at 20℃. The cinnamic acid content of `Seolhyang` was higher at 15℃ than at 20 , whereas that of `Maehyang` increased at 20℃. Collectively, the biologically active compounds of strawberry were affected by growth temperature. Moreover, the content of these compounds tended to increase at 20°C, the optimum growth temperature, rather than at the sub-optimal growth temperature of 15℃.