• Asian Journal of Turfgrass Science
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• v.24 no.2
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• pp.149-155
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• 2010

This study was conducted to examine the effects of plant growth regulators (PGRs) on the lateral stem growth, and the change of total nonstructural carbohydrate (TNC) status of 'Zenith' zoysiagrass under shaded conditions. Well-established turf was subjected to a full sun, 47%, and 77% shade in a field study. Three different rates of flurprimidol (FP: 0.2, 0.4, and $0.8\;kg{\cdot}ha^{-1}$), paclobutrazol (PB: 0.16, 0.32, and $0.64\;kg{\cdot}ha^{-1}$), and trinexapac-ethyl (TE: 0.04, 0.08, and $0.16\;kg{\cdot}ha^{-1}$) were applied. Lateral development of 'Zenith' zoysiagrass decreased with increasing shade levels. However, compared with control plots, total stolon length and stolon number increased two fold at 0.2, $0.4\;kg{\cdot}ha^{-1}$ FP, and $0.16\;kg{\cdot}ha^{-1}$ PB under full sun. Under 77% shading, stolon number increased by 170% and total stolon length increased by 140% at $0.8\;kg{\cdot}ha^{-1}$ FP. Tiller number increased by 40% at $0.08\;kg{\cdot}ha^{-1}$ TE under full sun, and by 72% at $0.16\;kg{\cdot}ha^{-1}$ TE under 77% shading. The TNC contents of turfgrass treated with $0.8\;kg{\cdot}ha^{-1}$ FP and $0.16\;kg{\cdot}ha^{-1}$ TE increased by 50% as compared with control. Remarkably, nonstructural carbohydrates (NC) partitioning was enhanced by PGRs from leaf tissue to lateral stem tissue, which increased lateral development and may have contributed to recuperative rate. These results suggested that treatments of proper rate of PGRs could enhance the recuperative rate of 'Zenith' zoysiagrass by increasing lateral stem growth especially in shaded conditions.

• The Hankook-Saengyark Bo
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• no.266
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• pp.1-8
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• 2006

GAP인증약재 고품질 브랜드로 차별화/약용작물 GAP 인증사업 본격 착수/수급조절대상한약재 14종으로 축소/엄경섭 회장 제 14대 회장에 재선/GAP 농산물 이력추적관리제 워크숍/홍천군 생명.건강연구장비센터 완공/'동의보감타워' 개장/인삼, 다양한 포장단위로 판매 가능/인증품의 차별화로 '신뢰쌓기' 급선무/나는 이렇게 생각한다-"국산한약재 그리고 GAP/'광범위계 농약' 예방 목적으로 사용해야/경남도농업기술원 시험/백두대간 청정지역에서 GAP 오미자 재배/생강 인공토굴 저장 부패율 3%/4년간 인삼 직파재배용 차광망 선발/일당귀 소비증가 시세도 토당귀 '두배'/씀바귀, 암 예방 보약/함양산삼축제/감초로 스트레스성 속쓰림 방지/한약재 4가지+빵 '한약웰빙빵' 나왔다/"옻음료, 약국서 찾으세요"/GAP재배지 입간판 설치/허브산업 육성 업무제휴 협약서 체결/사무국 회무일지/제 113차 중앙이사회 이모저모/14대 임원진 명단/약초이야기-구릿대(백지)/국산한약재-소매시세표

• Horticultural Science & Technology
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• v.19 no.4
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• pp.455-458
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• 2001

To screen potato clones with high resistance to hollow heart (HH) and internal brown spot (IBS), field conditions were set up to induce high frequencies of physiological disorders in 'Atlantic' potato through various treatments of mulching, periodic shadings, and plant growth regulators such as trinexapac-ethyl (Tr-E) and dicloprop-triethanol mine (DTA). IBS occurrence was as high as 67.5% in the field plot mulched with transparent film and shaded for 10 days beginning at 80 days after planting. The highest level of HH was 22.9% in the plot mulched with transparent film and shaded for 10 days beginning at 60 days after planting. Very high level of IBS (66.3%) also occurred in the plot treated with 1500 mg/L of Tr-E 40 days after planting, while HH occurred by 21.3% in the plot treated with 1000 mg/L of DTA 70 days after planting. In the plots which were treated with 1,500 mg/L of Tr-E after 40 days of planting and 1000 mg/L of DTA after 70 days of planting, 'Superior' (moderately highly resistant) and 'Atlantic' (very susceptible) could be clearly distinguished to be resistant and susceptible. High occurrence condition set up in this study could be applied for the potato breeding program to screen potato clones with high resistance to HH and IBS.

• Journal of the Korean Society of Food Science and Nutrition
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• v.17 no.2
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• pp.158-163
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• 1988

The changes of the physico-chemical properties and fatty acid compositions of cooked soybean oil, 30 min at $180{\pm}5^{\circ}C$, were investigated to compare the antixidative effects of some antioxidants such as BHA, ${\alpha}-tocopherol$ and sesamol according to various storage conditions(room temperature, room temperature with a air tight in the dark and low temperature with air tight) for 4 weeks. The order of antioxidative effects according to different storage conditions was low temperature with air tight, room temperature with air tight in the dark and room temperature. Acid values, peroxide values and carbonyl values of soybean oil stored under low temperature with air tight after ${\alpha}-tocopherol$ treatment were similar to those of soybean oil stored under room temperature after BHA treatment. The relative contents of linoleic acid and linolenic acid decreased during storage, wheras those of oleic acid and palmitic acid increased. The contents of linoleic acid in soybean oil treated with ${\alpha}-tocopherol$ and BHA under low temperature with air tight storage were $53.61{\sim}50.29%$ and $53.78{\sim}50.68%$, respectively. These contents were very high in comparison with those in untreated oil under room temperature storage, $52.09{\sim}43.96%$.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.11 no.2 s.95
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• pp.86-92
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• 1990

최근 소득작물로 재배면적이 늘고있는 시설하우스의 채소재배는 시설의 대형화와 고정화로 인한 연작장해와 주년재배에 의한 포장환경의 오염, 시설내의 고온다습, 무리한 약제살포 등으로 노지재배에서는 별로 문제가 되지않던 병들이 하우스내의 온도보존을 위한 2중, 3중의 밀폐로인한 높은 습도 때문에 거의 모든 작물에서 잿빛곰팡이병, 균핵병등이 발생되고 있다. 또한 연작으로 인한 토양전염성 병균의 밀도가 높아져서 역병, 풋마름병, 덩굴마름병등이 발생될 뿐아니라 지력증진을 위한 미숙 유기물이나 생육촉진을 위한 제4종 복합비료, 생장조절제등의 남용으로 전에는 없었던 새로운 장해가 증가되고 있어 이에 대한 방제대책의 일환으로 주산단지를 이루고 있는 농가의 병해충 발생및 토양환경등을 중심으로 문제점을 분석하고 대책을 소개하기로 한다.

• Journal of Practical Agriculture & Fisheries Research
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• v.24 no.4
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• pp.35-44
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• 2022

This study was conducted to develop a mass production for a commercial use by cutting of 4 kinds of V. glabrifolia Kitag., V. pusanensis Y.N.Lee, V. glabrifolia Kitag. × V. Spicata 'Alba' and V. spicata 'Ulster Blue Dwarf' × V. longifolia. Veronica L. Effects of shade, media and concentrations of plant growth regulators on the rooting of Veronica L. were examined. The rooting rate of V. glabrifolia Kitag. was higher as a 60% than the V. pusanensis Y.N.Lee as a 20% in the control of commercial media. In shading treatment, the rooting rate was highest at 30% or 60% shading, and the 30% shading was the best in number of root and root length, but the 90% shading was lower than no shading treatment. For cutting media, the rock wool and 100% perlite increased the rooting rate by more than 10% compared to commercial media, and increased the number of roots by 2 or 3 times. However the Cocopeat of media was lower of rooting rate, root number, and root length compared to another treatment. In the plant growth regulator treatment, the rate of rooting increased in all treatment compared to control, and was highest at IBA 1,000mg·L^-1 as a 82.2% and NAA 200 or 400mg·L^-1 as a 82.2% or 84.4% respectively, in the V. glabrifolia Kitag. × V. Spicata 'Alba'. However, the root number and root length was decreased as the concentration of growth regulators increased.

• Research in Plant Disease
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• v.10 no.2
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• pp.150-153
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• 2004

This study was conducted to investigate the sap transmission pattern of CGMMV and to select the disinfectant of sap transmission on watermelon cultivation. Being investigated CGMMV occurrence change after transplanting two diseased plants among 47 plants on the watermelon house, disease spread rapidly from early growth stage of 4 % to late growth stage of 83 %. When the grafting knife and topping scissor was dipped onto the several disinfectants before grafting or topping, disease suppressed 87-95 % on whole milk, skim milk, tri-sodium phosphate, and sodium hypo-chloride solution. Disinfection effects of 88.2 % and 91.2 % on whole milk and skim milk were showed when the hand dipped on the disinfectants.

• Korean Journal of Soil Science and Fertilizer
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• v.31
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• pp.36-44
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• 1998

우리 나라에서 토양의 점토광물에 관한 최초의 연구는 1958년 김제지방의 답 토양에 관한 연구로 (Dewan, 1958)시작되었다. 1960년대 시작하여 1970년대 까지는 주로 토양점토광물의 동정이 이루어 졌다. 점토광물의 동정(同定)에 사용된 잔적토(殘積土)(Residual Soil)로는 화강암(花崗岩), 화강편마암(花崗片麻岩), 현무암(玄武岩), 석회암(石灰岩), 혈암(頁岩), 제(第)3기층(紀層), 홍적층(洪積層) 유래 토양과 토양종류별(土壤種類別)로는 과부식회색토(寡腐植灰色土), 염류토(鹽類土), 충적토(沖積土), 적황색토(赤黃色土), 화산회토(火山灰土), 퇴적토(堆積土), 갈색토(褐色土), 암쇄토(岩碎土), 저위생산답(低位生産畓)이였으며, 토양점토광물(土壤粘土鑛物)과 작물수량성(作物收量性) 관계에 관한 연구가 실시되었다. 1980년대에 들어와서는 토양중의 1차광물과 점토광물의 풍화에 대한 안정도와 1차광물의 동정이 행해졌으며, 이밖에 Kaolinite 입자의 전하에 관한 연구등 점토광물의 흡착과 활성 연구, 점토광물의 토양개량재로서의 흡착과 화학적 특성 변화 연구와 점토광물의 토양개량 시용효과에 관한 연구가 행해졌다. 1990년대에 들어와서는 토양 중의 1차광물과 점토광물의 정량에 대한 자료가 축척되었고, 토양의 풍화에 대한 안정성과 생성기작, Zeolite와 새로운 광물이 합성되었다. 또한 합성광물을 이용한 농업과 산업광물로의 응용성 환경 산업에서의 적용가능성에 대한 평가가 시도되었다. 토양의 점토광물의 조성에 관한 연구는 토양 모재를 중심으로 이루어졌는데, 화강암(花崗岩)에서는 Halloysite, 화강편마암(花崗片麻岩)에서는 Kaolinite, Metahalloysite, Illite, 산성암(酸性岩)에서는 Kaolinite, Venrmiculite와 Chlorite의 중간광물, 현무암(玄武岩)에서는 Illite, Kaolinite, Vermiculite, 석회암(石灰岩)에서는 Vermiculite-Chlorite 중간광물, Kaolinite와 Illite, 혈암(頁岩)에서는 Kaolinite, Halloysite, Illite 외 Vermiculite-Chlorite, 화산회토(火山灰土)에서는 Allophane이 주광물이었다. Soil Taxonomy와 토양광물과의 관계에서, 답 토양에서는 Entisols의 주점토광물은 2:1형과 1:1형 광물이지만 Inceptisols와 Alfisols에서는 Halloysite가 대부분이다. 밭 토양의 경우는 Alfisols의 주점토광물은 Vermiculite, Illite, Kaolinite이었고, Ultisols에서는 Vermiculite-Chlorite 중간광물이었다. 산림토양에서는 Inceptisols중에서 Andept는 Allophane, Alfisols에서는 2:1 광물이지만, Ultisols에서는 Halloysite이다. 모재별 조암 광물의 풍화와 점토광물의 생성과정에서 화강암(花崗岩)과 화강편마암(花崗片麻岩)의 장석류(長石類)는 kaoline광물로, 이 밖의 운모광물(雲母鑛物), 녹니석(綠泥石), 각섬석(角閃石), 휘석(輝石)으로부터 생성된 illite, chlorite, vermiculite는 풍화중간에 혼층단계(混層段階)를 거쳐서 kaoline 광물로 풍화된다. 석회암(石灰岩) 토양의 smectite가 Mg농도가 높은 토양용액으로부터 침전되어 생성되었거나 운모 또는 chlorite에서 유래된 vermiculite의 변성작용에 의해 생성되고, 혈암(頁岩)토양의 점토에 illite가 주로 풍화에 저항성이 큰 미립자의 함수백운모(含水白雲母)로부터 유래되며, 현무암(玄武岩) 중의 장석류(長石類)는 kaoline광물로, 휘석(輝石)은 chlorite${\rightarrow}$illite의 풍화과정을 거친다. Zeolite, 함불석 Bentonite, Bentonite 등 우량점토 광물이 분포과 광물조성, 이화학적 특성이 조사되었고, 토양의 물리적, 화학적 성질의 개선을 필요로 하는 토양의 개량을 위해서 Bentonite, Zeolite, Vermiculite 등의 토양 개량재(改良材)로서의 기초연구와 이들 개량재 시용효과에 관한 연구 등이 주로 논토양에서 수행되었다. 점토광물과 수량관계를 보면 Montmorillonite를 주점토광물로 함유된 답 토양의 수도수량이 1:1 광물을 주점토광물로 함유하고 있는 토양에서의 수도수량 보다 높았다. 토양광물에 관한 기초연구(基礎硏究)로서 양이온교환능과 포화이온의 영향, 입자의 전기화학적 성질, 흡탈착 성질, 표면적과 등전점, 해성점토에 대한 압밀점토(壓密粘土)의 변형율(變形率)의 추정 등이 주로 연구되었다. 부가가치가 낮거나 폐기되는 광물을 이용하여 토양개량재 혹은 흡착제를 형성하는 연구가 알카리 처리에 의한 Zeolite 합성에 집중되었다.

• Clinical and Experimental Reproductive Medicine
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• v.28 no.1
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• pp.73-77
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• 2001

Objective: To report the pregnancy which was made by in vitro fertilization using recombinant follicle stimulating hormone and gonadotropin releasing hormone antagonist. Material and Method: Case report. Results: Six oocytes were retrieved and all were fertilized by intracytoplasmic sperm injection. Six embryos were transferred and the pregnancy was confirmed. Conclusion: It is envisaged that the availability of recombinant gonadotropins and gonadotropin releasing hormone antagonists will ultimately lead to shorter, cheaper and safer treatments, using reduced dosages.

• Proceedings of the KIEE Conference
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• 1997.07d
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• pp.1213-1215
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• 1997

In order to investigate the electrical characteristics due to the BTA(Benzotriazole) additive in the transformer, the electrical characteristics of the transformer oils contained benzotriazole as an anti-static agent for streaming electrification is studied by measuring the electric conduction. As a result of the electrical conduction characteristics, it is confirmed that the conduction current of virgin specimen is more higher than that of specimen contained the BT A 10[ppm] over 35[$^{\circ}C$], but that of specimen contained the BT A 10[ppm] over 50[$^{\circ}C$] is increased.