남부지역 논의 사료작물-벼 이모작 작부체계에 적합한 벼 품종의 선발

오서영,오성환,서종호,최지수,Oh, Seo Young,Oh, Seong Hwan,Seo, Jong Ho,Choi, Jisu 한국환경과학회 2022 한국환경과학회지 Vol.31 No.5

To identify rice (Oryza sativa L.) cultivars suitable for Italian ryegrass (Lolium multiflorum Lam.)-rice double cropping systems, we investigated the yield and grain quality of four different midseason maturing rice cultivars ('Daebo', 'Haepum', 'Haiami', and 'Samdeog') and four midseason-to-late maturing rice cultivars ('Hyunpoom', 'Saeilmi', 'Saenuri', and 'Samkwang') in single rice cropping and Italian ryegrass-rice double cropping systems in paddy fields of Miryang, South Korea. We found that organic matter and available P₂O₅ content slightly decreased, whereas Na content increased, in the soil where Italian ryegrass was cultivated during winter compared to that in the soil that remained fallow during winter. The pH, electrical conductivity, organic matter, and contents of K⁺, Ca²⁺, Mg²⁺, and Na⁺ decreased, whereas the available P₂O₅ content slightly increased, in the soil where rice was harvested in both single and double cropping systems. However, compared to the optimum soil conditions for rice cultivation, available P₂O₅ and K⁺ content were high and Mg²⁺ content was low in both single and double cropping systems. At the heading stage, the culm length and leaf color slightly increased in most of the rice cultivars, whereas the panicle length and number slightly decreased, in the double cropped system. After harvesting, spikelet number and milled rice yield did not show a significant difference between single and double cropping systems. However, the ripened grain rate and weight per thousand grains increased slightly in the 'Saeilmi' and 'Samkwang' cultivars but remained either stable or slightly low in other cultivars in the double cropping system. The milled rice yield was high (> 500 kg/10a) in 'Daebo' and 'Haepum' among midseason maturing rice cultivars, and in 'Saeilmi' and 'Saenuri' among midseason-to-late maturing rice cultivars, in both single and double cropping systems. The head rice rate was high in midseason maturing rice cultivars in the double cropping systems, reaching > 70% in 'Haepum' and 'Haiami' cultivars, whereas it decreased in most midseason-to-late maturing rice cultivars (excluding 'Samkwang' cultivar), in double cropping systems. Particularly, it exceeded > 70% in the 'Saenuri' cultivar in both single and double cropping systems. The protein content in milled rice increased, whereas the amylose content either remained stable or slightly increased, in double cropping systems. The Toyo taste value decreased in all midseason-to-late maturing rice cultivars and slightly increased in the 'Daebo' and 'Haiami' cultivars among midseason maturing rice cultivars in double cropping systems. However, Toyo taste values in the 'Haepum', 'Haiami', and 'Saenuri' cultivars exceeding > 80% in both single and double cropping systems. Therefore, we recommend 'Haepum', 'Haiami', and 'Saenuri' cultivars as candidates for Italian ryegrass-rice double cropping systems due to high yield, head rice rate, and Toyo taste value.

남부지역 논에서 토양의 이화학적 특성 및 벼의 생산성과 미질 향상을 위한 이탈리안 라이그라스-벼 이모작 작부체계의 적용

오서영,오성환,서종호,최지수,Oh, Seo Young,Oh, Seong Hwan,Seo, Jong Ho,Choi, Jisu 한국환경과학회 2021 한국환경과학회지 Vol.30 No.8

The physicochemical properties of soil and the yield and quality of rice (Oryza sativa L. cv. Sailmi) were assessed using Italian ryegrass (Lolium multiflorum Lam. cv. Kowinearly)-rice double cropping systems in the paddy fields at Goseong and Miryang in southern Korea. The average temperatures during the ripening period were approximately 1 ℃ higher than the optimal temperature for rice ripening and the sunshine duration was reduced by frequent rainfall. Consequently, it was slightly below the optimal conditions required for rice ripening. In the soil at Goseong, winter Italian ryegrass cropping increased the pH, electrical conductivity, and the contents of organic matter, total nitrogen (T-N), available P₂O₅, K, Ca, and Mg than winter fallowing. Particularly, the contents of T-N and available P₂O₅increased significantly. In the soil at Miryang, Italian ryegrass slightly increased the electrical conductivity and the T-N, Mg, and Na contents. Therefore, winter Italian ryegrass cropping improved the physicochemical properties of paddy soils; however, Italian ryegrass-rice double cropping slightly reduced the culm length at both Goseong and Miryang, without markedly changing the panicle length or number compared to fallow-rice cropping. Furthermore, at Goseong, Italian ryegrass-rice double cropping slightly decreased the spikelet number and milled rice yield, and increased the ripened grain rate; however, at Miryang, contrasting results were observed. In addition, fallow-rice cropping revealed no differences in the head rice or opaque rice rates. The protein content was slightly increased in Italian ryegrass-rice double cropping, without significant changes in the amylose content or Toyo value, compared to that in fallow-rice cropping. The peak and breakdown viscosities were slightly decreased. These results indicate that winter Italian ryegrass cropping might alter rice taste but may not exhibit remarkable negative effects on rice cultivation. Therefore, Italian ryegrass-rice double cropping system is recommended for paddy fields in southern Korea. Nevertheless, to increase the rice yield and quality, fertilization standards for rice cropping that consider the changes in the T-N and organic matter contents in paddy fields caused by winter Italian ryegrass cropping need to be established.

논에서 벼 대체작물의 전작 재배가 조경밀의 곡물 생산성과 밀가루의 품질에 미치는 영향

오서영,서종호,최지수,오성환,Oh, Seo Young,Seo, Jong Ho,Choi, Jisu,Oh, Seong Hwan 한국자원식물학회 2022 한국자원식물학회지 Vol.35 No.5

The grain yield and flour quality of winter wheat (Triticum aestivum L. 'Jokyung') were investigated in the paddy fields in which the double-cropping of wheat linked to rice (Oryza sativa L.) and its alternative crops [black soybean (Glycine max (L.) Merr.), sesame (Sesamum indicum L.), and perilla (Perilla frutescens (L.) Britton)] was applied. In the soils in which black soybean, sesame, and perilla as pre-crops were cultivated, the soil pH was higher and the electrical conductivity was lower than in the rice pre-cropped soil. In addition, the available phosphate (Av. P₂O₅), and contents of Ca²⁺ and Mg²⁺ were higher than in the rice pre-cropped soil. Winter wheat growth characteristics such as culm length, spike length, number of spikes and grains were generally favorable in the black soybean pre-cropped soil. However, the grain yield of winter wheat increased in the black soybean, sesame, and perilla pre-cropped soils by 100 kg/10a or more than in the rice pre-cropped soil. Furthermore, protein content and SDS-sedimentation value of the flour were higher, while amylose content was slightly lower, in the black soybean, sesame, and perilla pre-cropped soils than in rice pre-cropped soil. These results suggest that cultivation of rice alternative crops such as sesame, black soybean, and perilla as pre-crops in paddy soil could improve the physical and chemical properties of the soil and contribute to producing high-quality wheat flour more advantageous for the baking process.

광디스크 드라이브의 입자 오염 및 열축적 제어를 위한 설계 제안

오서영,황정호,Oh, Seo-Young,Hwang, Jung-Ho 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.1

Airborne contaminant particles are intruded into optical disk drives(ODD) due to the flow caused by disk rotation and can be adhered to lens or disk surfaces, which causes decrease of laser power and increase of read/write errors. Such a phenomenon can be more serious as the space between the disk and the lens is reduced fur high-density storage devices. The purpose of this paper is to understand design parameters to reduce the particle intrusion into an ODD. Suggestions are made to prevent the particle intrusion that can decrease the stability of an ODD and also prevent the potential heat build-up problem. The sealing effect of drive and the forced injection of clean air (using HEPA filter) into the drive minimizes intrusion of the outside air and dusts in an ODD remarkably. Moreover it is proved by experiments that the installation of a heatproof pad to isolate heat generation part (PCB) from information read/write sections and the forced injection of dust-free air reduce the gas temperature inside the drive as well as the amount of particles intruded.

산조인 복합오일을 이용한 향기건식 흡입요법과 스파 프로그램이 스트레스에 미치는 효과 : 이중맹검, 무작위배정, 단일기관 임상시험

오서영,강재희,장태수,최희정,안택원,Oh, Seo Young,Kang, Jae Hui,Jang, Tae Soo,Choi, Hee Jeong,Ahn, Taek Won 대전대학교 한의학연구소 2017 혜화의학회지 Vol.26 No.1

Objectives : The purpose of this study was to investigate the efficacy of inhalation therapy using Zizyphus jujuba var. spinosa blended oil and spa therapy on stress in adults. Methods : The study design was a double blind, randomized, single center clinical trial. A total of 30 volunteers who were highly stressed and were over 9 points on POMS(profile of mood states) participated in this study. Inhalation therapy using Zizyphus jujuba var. spinosa blended oil and spa therapy were applicate for the experimental group and Jojoba oil inhalation and spa therapy was given for the control group. During the 2 weeks, the participants were treated about inhalation and spa therapy twice a week. The treatment sequence is spa therapy after inhalation therapy. Result : The improvement of stress was evaluated by POMS, HRV(Heart Rate Variability), EEG(Electroencephalography), PSQI(Pittsburgh Sleep Quality Index), salivary cortisol. After treatment, POMS was significantly decreased between the experimental group and the control group. In other measurement(HRV, EEG, PSQI, salivary cortisol) except POMS, there were not significant. Overall, however, they showed a tendency to alleviate stress in the experimental group. Conclusions : We suggest that inhalation therapy using Zizyphus jujuba var. spinosa blended oil and spa therapy might be effective on stress.

제주지역의 화산회토양과 비화산회토양에서 재배된 난지형 마늘의 생장과 무기성분 함량

오서영(Seo Young Oh),고석찬(Seok Chan Koh) 한국원예학회 2020 원예과학기술지 Vol.38 No.1

본 연구는 고품질의 마늘을 수확하기 위해서 필요한 토양 개선과 작물 재배 시 관리 방법을 평가하기 위하여 제주지역의 흑색 화산회토양(BS), 농암갈색 화산회토양(VDBS)과 암갈색 비화산회토양(DBS)에서 마늘(Allium sativum L.)을 재배하고 생육특성과 무기성분 함량을 조사하였다. 토양 유형별 물리화학적 특성을 살펴보았을 때 유기물과 질소 함량은 화산회토양(흑색 및 농암갈색)이 비화산회토양(암갈색)보다 더 높았고, 유효인산(Av. P2O5)과 마그네슘(Mg) 함량은 비화산회토양이 화산회토양보다 더 높았다. 생육기간동안 지상부의 길이와 엽초경은 농암갈색 화산회토양과 암갈색 비화산회토양에서 더 빠르게 생장하였으며, 흑색 화산회토양에서는 저조하였다. 수확기 인경 두께와 길이도 농암갈색 화산회토양과 암갈색 비화산회토양에서 더 잘 발달하였으며, 흑색 화산회토양에서는 인경 발달이 가장 저조하였다. 그리고, 인경 당 인편 수는 농암갈색 화산회토양과 암갈색 비화산회토양에서는 각각 7개와 6개로 많고, 흑색 화산회토양에서는 4개에 불과하였으며, 인편 무게도 농암갈색 화산회토양에서 수확한 마늘이 더 무거웠다. 그러나 흑색 화산회토양에서는 지상부의 생장뿐만 아니라 인편 분화 및 비대가 정상적으로 이루어지지 않았다. 인경의 T-N, P, K, Ca, Fe, Mn, Zn, Cu 함량은 암갈색 비화산회토양과 농암갈색 화산회토양에서 재배하였을 때 높은데 반하여, 흑색 화산회토양에서는 낮았다. 특히, 암갈색 비화산회토양에서 재배되었을 때에 K, Mn, Zn, Cu 함량이 크게 증가하였다. 이상의 결과를 토대로 토양의 물리화학적 특성이 마늘의 생육과 인경 발달에 영향을 미치는 것을 알 수 있었으며, 높은 수확량과 고품질의 마늘을 생산하기 위해서는 농암갈색 화산회토양과 암갈색 비화산회토양에서 마늘을 재배하는 것이 바람직한 것으로 보인다. The growth and mineral content of garlic (Allium sativum L.) grown in different types of soil on Jeju Island, including black volcanic ash soil (BS), very dark-brown volcanic ash soil (VDBS), and dark-brown non-volcanic ash soil (DBS), were investigated to evaluate soil–crop system management, which is required to increase crop quality and productivity. Examining the soil physicochemical properties, the organic matter and total nitrogen contents were higher, while the available P2O5 and Mg contents were lower, in the volcanic ash soils than in the non-volcanic ash soil. During the growing stage, plant height and pseudo stem diameter were greater in garlic grown in VDBS or DBS compared to BS. At harvest time, bulb diameter and length, the number of cloves per bulb, and clove weight were greater in VDBS or DBS than in BS. In addition, in BS, shoot growth, bulb development, and clove differentiation were abnormal. The total N, P, K, Ca, Fe, Mn, Zn, and Cu contents in the bulbs were also higher in garlic grown in DBS or VDBS compared to BS. Specifically, the K, Mn, Zn, and Cu contents increased significantly in garlic grown in DBS. These results suggest that soil physicochemical properties affected the growth and development of garlic, and that the cloves should be grown in VDBS or DBS to increase the productivity of high-quality garlic with large, mineral-rich bulbs.

농암갈색 화산회토양에 의한 배추의 광합성, 생산성 및 무기성분 조성의 향상

오서영(Seo Young Oh),문경환(Kyung Hwan Moon),신민지(Minji Shin),고석찬(Seok Chan Koh) 한국원예학회 2020 원예과학기술지 Vol.38 No.6

본 연구는 배추의 생산성 및 품질 향상을 위한 토양 개선과 작물 재배 시 관리방법을 평가하기 위하여 제주지역의 토양 유형별(흑색 화산회토양, 농암갈색 화산회토양, 암갈색 비화산회토양)로 결구형의 월동배추를 재배하여 광합성, 생산성 및 무기성분 함량의 변화를 분석하였다. 농암갈색 화산회토양은 토양산도가 pH 5.87로 배추생육에 적합하며, 유기물과 유효인산, 토양 내 치환성 양이온(K, Ca, Mg 등) 함량도 높은 편이다. 월동배추의 지상부 길이와 폭, 생체중과 건물중, 엽수와 엽면적은 흑색 화산회토양과 암갈색 비화산회토양에 비해 농암갈색 화산회토양에서 재배하였을 때 더 높았으며, 뿌리의 길이는 토양 유형 간에 차이가 없으나 생체중과 건물중 역시 농암갈색 화산회토양에서 높았다. 그러나 가용성 고형물 함량은 흑색 화산회토양과 암갈색 비화산회토양에서 보다 농암갈색 화산회토양에서 낮았다. 광계II의 최대 광화학적 효율(Fv/Fm)은 모든 토양에서 0.8 이상으로 안정된 값을 보였으나, 농암갈색 화산회토양과 암갈색 비화산회토양에서 다소 높았다. 잎의 SAPD 값은 55 이상으로 토양 유형 간에 유의한 차이를 보이지 않았다. 그리고, 광합성률(A)과 호흡률(Rd)도 토양 유형 간에 차이가 없었으나, 수분 이용효율(WUE)은 농암갈색 화산회토양에서 다소 높았다. 배추의 무기성분들 중에 T-N은 농암갈색 화산회토양에서 낮았으나, Mg을 제외한 모든 다량원소들과 미량원소 중 Cu의 함량은 농암갈색 화산회토양에서 재배된 배추에서 더 높았다. 이러한 결과는 농암갈색 화산회토양에서 재배된 배추는 높은 수분이용효율과 생육에 적합한 토양 특성으로 인해 뿌리 성장이 양호해지고, 수분과 양분 흡수율이 높아져 지상부 생산성이 높고 식품영양학적 측면을 고려한 상품성도 높은 것으로 평가된다. 따라서 월동배추의 결구 크기나 무게, 미량원소 함량 등 상품성과 생산성을 감안했을 때 농암갈색 화산회토양에서 배추를 재배하는 것이 적절하다는 것을 시사해 준다. The photosynthesis, productivity, and mineral content of Chinese cabbage (Brassica campestris subsp. napus var. pekinensis cv. Detong) grown in different soil types on Jeju Island were investigated to develop soil–crop system management, with the goal of increasing crop productivity and quality. The soils were black volcanic ash soil (BS), very dark-brown volcanic ash soil (VDBS), and dark-brown non-volcanic ash soil (DBS). VDBS had a pH of 5.87, relatively close to the optimal pH range for Chinese cabbage cultivation, and slightly higher than the pH of BS and DBS; it had high contents of organic matter, available P₂O5, and exchangeable cations (K, Ca, Mg, etc.). Growth of the cabbage head including height, diameter, fresh weight, leaf numbers, and leaf area were greater in Chinese cabbage grown in VDBS compared to BS or DBS. Root biomass was also greater in VDBS, although root length did not differ significantly among soil types. However, the soluble solid content was lower in VDBS than in BS or DBS. The maximum photochemical efficiency (Fv/Fm) of photosystem II was slightly higher in VDBS and DBS, although it had stable values ≥ 0.8 in all three soil types. The SPAD values did not differ significantly and were ≥ 55 in all three soil types. The water-use efficiency (WUE) was slightly higher in VDBS, although the maximum photosynthetic rate (A) and dark respiration (Rd) did not differ among soil types. Of the mineral elements in cabbage head, total nitrogen was lower in VDBS than in BS and DBS. However, all macronutrients, except Mg, and micronutrient Cu were slightly higher in VDBS than in the other soil types. These results suggest that the relatively favorable soil conditions of VDBS (suboptimal pH, high mineral content, etc.) and high water-use efficiency of Chinese cabbage favor head growth and its nutritional value. VDBS was suitable for cultivating Chinese cabbage, considering productivity and product quality, such as its size, weight, and mineral content.

주야간 재배 온도별 무(Raphanus sativus var. hortensis)의 생육 특성 및 생산성

오서영(Seo Young Oh),문경환(Kyung Hwan Moon),신민지(Minji Shin),이성은(Seong Eun Lee),고석찬(Seok Chan Koh) 한국원예학회 2022 원예과학기술지 Vol.40 No.2

남부지역의 논 토양에 적합한 콩 품종의 선발

오서영(Seo Young Oh),오성환(Seong Hwan Oh),최지수(Jisu Choi),김태희(TaeHee Kim),서종호(Jong Ho Seo) 한국원예학회 2022 한국원예학회 학술발표요지 Vol.2022 No.11

같은 공간에 공존하는 증강 작업공간 사이의 AR HMD 기반 협업을 위한 모바일 기기의 보조적 활용

오서영(Seo Young Oh),우운택(Woontack Woo) 한국정보과학회 2021 한국정보과학회 학술발표논문집 Vol.2021 No.12