• 제목/요약/키워드: cultural season

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시설과채류(오이, 참외)의 뿌리혹선충 종합방제에 관한 연구 (Study on Integrated Control against Root-knot Nematode of Fruit Vegetables (Oriental Melon and Cucumber) in Vinyl House)

  • 박소득;박선도;권태영;최부술;이원식;최영연
    • 한국응용곤충학회지
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    • 제34권1호
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    • pp.75-81
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    • 1995
  • 시설 과채류 재배지의 뿌리혹선충의 피해경감을 위해서 경북도내 시설 오이 재배단지인 칠곡과 참외재배 주산지인 성주에서 1992년부터 1994년까지 3년간 방제시험한 결과 뿌리혹선충의 피해를 경감시키기 위한 토양개량 적기는 모래산흙인 마사토의 경우에 3년 붉은산흙인 경우 4년마다 하는 것이 효과적이고 농약과 조합한 오이의 방재시험에서 빗사마드 분제가 78.2%, 카보입제+토양반전+담수가 71.2%, 카보입제+담수가 66.3%이었으며 참외에서 살충제처리후 20일에는 77.7~80.6%의 방제효과를 보였으나 60일 후에는 33.7~49.5%로 방제가 낮아 후기에는 효과가 낮았다. 참외재배 논에서의 작부체계에 따른 뿌리혹선충 밀도 억제효과는 참외 재배후 담수하여 벼를 재배할 때에 벼 수확시 방제효과가 91.1%로 대부분의 선충이 사멸되었다. 각 처리구 공히 처리당시에는 뿌리혹선충 증식을 억제하였으나 생육추기로 갈수록 선충밀도가 증가되었다. 그러나 토양개량은 3년간 효과적이였으며 가장 경제적으로 선충의 증식을 억제하 수 있는 처리는 3년마다 한번씩 벼를 재배하는 것이었다.

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Halo Blight of Kudzu Vine Caused by Pseudomonas syringae pv. phaseolicola in Korea

  • Jeon, Yong-Ho;Chang, Sung-Pae;Kim, Sang-Gyu;Kim, Young-Ho
    • The Plant Pathology Journal
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    • 제22권2호
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    • pp.119-124
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    • 2006
  • Kudzu vine(Pueraria montana var. lobata) is an invasive climbing woody vine that envelops trees and shrubs, pressing physically and shutting out sunlight, which needs to be controlled. Kudzu vine pathogens were surveyed as a way to seek its biocontrol agents in 2002. Occurrence of a bacterial halo blight disease of kudzu vine was observed at several localities in Korea including Euiwang and Suwon in Gyeonggi Province, Daejon, and Gochang and Buan in Jeonbuk Province. Symptoms of brown to black spots with a surrounding yellowish halo appeared from June and lasted till the rainy season without much expansion, but accompanying often leaf blight and defoliation. Isolated bacteria were identified as Pseudomonas syringae pv. phaseolicola based on physiological and cultural characteristics, Biolog, fatty acid and 16S rDNA sequencing analyses. In artificial inoculation test, these bacteria produced the same halo spot symptoms on kudzu vine and bean plants. They also induced hypersensitive responses (HR) on tobacco, tomato, and chili pepper leaves. This is the first report of a bacterial disease of kudzu vine in Korea, and the bacterial pathogen can be used as a biocontrol agent against the pest plant.

Weeding Efficacy of Melanized Formula with Epicoccosorus nematosporus on Eleocharis kuroguwai in the Field

  • Hong, Yeon-Kyu;Cho, Jae-Min;Uhm, Jae-Youl;Hyun, Jong-Nae;Lee, Bong-Choon;Song, Seok-Bo;Lee, Dong-Chang
    • The Plant Pathology Journal
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    • 제19권2호
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    • pp.92-96
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    • 2003
  • The study was conducted to determine the cultural conditions and the effect of inert fillers for melanization and sporulation abilities of sodium alginate pellets, and the weeding efficacy of the formula in the field. Melanin production of E. nematosporus was affected by striking frequency. Percentage of melanized beads was increased to 80.6% at higher rpm up to 180. The melanized pellets produced more conidia with abundant mucilage than unmelanized pellets. Shaker culture of Epicoccosorus nematosporus with sodium alginate yielded a total of 55 mg per 100 pellets. Percentage of melanized pellets was highest with 81.0% and 83.3% of melanization, when wheat bran and rice polish were amended and produced the conidia with 65.4 and 68.4 mg per 100 pellets, respectively. When 1 L of conidial suspension of 6.0$\times$$10^5$ conidia per ml was applied on 30-day-old plants in a plot, 74.5% of the plants were killed within 20 days, whereas, its melanized sodium alginate pellets killed 57.8% of the plants in the same period. The number of tuber formation of Eleocharis kuroguwai in the untreated control plots was 128.5 per plot, but those of the plots treated with conidial suspension and melanized pellets were 22.1 and 39.7, respectively, at the end of the season. Results of this study showed that melanization of mycelia-mixed sodium alginate are an important sporulation factor in E. namatosporus as a mycoherbicide.

차나무 겹둥근무늬병의 발생소장 및 엽권 길항미생물 선발 (Disease Progress of Gray Blight on Tea Plant and Selection of a Biocontrol Agent from Phylloplanes of the Plant)

  • 오순옥;김경희;임광미;허재선;고영진
    • 식물병연구
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    • 제11권2호
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    • pp.162-166
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    • 2005
  • 차나무(Camellia sinensis O. Kuntze) 겹둥근무늬병의 발생소장을 2004년도 전남 보성군 보성읍 소재 전남농업기술원 보성차시험장에 식재되어 있는 야부기타 품종에서 조사하였다. 차나무 겹둥근무늬병은 6월말부터 발생하기 시작하여 7월말에 최대발병률을 나타내었다. 차나무의 엽권으로부터 차나무 겹둥근무늬병균에 대한 길항미생물을 분리하였으며, 차나무 겹둥근무늬병균에 대하여 가장 길항능력이 우수하고 차나무에는 병원성을 나타내지 않는 BD0310 균주를 겹둥근무늬병 방제용 길항미생물로 선발하였다. 선발된 균주는 배양적, 형태적, 생화학적 특성 조사와 16S rDNA염기서열 분석에 의하여 Bacillus subtilis 로 동정되었다.

저수온기의 제주도 양식 돌돔, Oplegnathus fasciatus, 병어로부터 분리한 병원세균의 특성 (Characterization of a bacterium isolated from diseased rock sea bream, Oplegnathus fasciatus, during low water temperature season in Jeju island)

  • 고대희;진창남;이창훈;박근태;허문수
    • 한국어병학회지
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    • 제17권2호
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    • pp.83-90
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    • 2004
  • 제주도에서 양식되는 돌돔에서 저수온기에 체표에 출혈성 패혈증 혹은 진무름 및 안구백탁이 수반되며 폐사하는 증상이 지속적으로 발견되었다. 이러한 증상의 원인균으로 추정되는 세균을 병어의 체표 및 장기에서 순수분리하였고 형태학적, 배양적 생화학적 조사 및 16S rDNA sequencing 분석 결과 Pseudomonas anguilliseptica로 동정되었다. 본 균주의 병원성 유무를 확인하기 위하여 인위 감염시험을 실시하였고, 그 결과 시험구에서 21일만에 실험어 20마리 모두가 자연감염된 병어와 유사한 증상으로 폐사하였다. 분리균주의 생육 최적 온도는 $\25^circ{C}$였고 생육 최적 pH는 7-8사이로 좁은 범위를 보였다. 낮은 염분농도에서 생육능이 우수하였으며 3%의 염분이 첨가된 배지에서도 생육능이 양호하였다. 약제내성 검사에서는 doxycycline, chloramphenicol, ciprofloxacin, erythromycin, flumequine, nalidixic acid, norfloxacin, ofloxacin에 감수성이 높게 나타났으나 페니실린계의 항생제에 높은 내성을 나타내었다.

Estimation of primary production of the waters around rack oyster farm at Wando, Korea

  • Jeong, Woo-Geon;Cho, Sang-Man
    • Fisheries and Aquatic Sciences
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    • 제21권4호
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    • pp.9.1-9.7
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    • 2018
  • To establish a comprehensive management strategy, as part of the optimization of cultural practice for an oyster rack culture system, we used a numerical model to estimate the primary production in the waters on the eastern coast of Wando island, South Korea. The estimated primary production ranged from 17.12 to $1052.55mgC\;m^{-2}day^{-1}$ ($204.22{\pm}224.75mgC\;m^{-2}day^{-1}$ in average). Except for the times of peak phytoplankton blooms, the estimated primary production (PP) was consistently under $200mgC\;m^{-2}day^{-1}$, which is more similar to the value of PP measured off the western coast of South Korea than the southern coast. No clear relationship was observed between nitrogen content and rainfall with the exception of heavy rainfall events, indicating that precipitation might not be the main source of nutrients in these waters. No clear influence was observed from Doam tidal discharge, located 24 km north from these waters due to main tide comes in this area from the channel between Gunwe-myeon in Wando island and Pukpyeong-myeon in Haenam-gun. Because of the shallow water depth and strong tidal current, resuspension of sediments, which causes an input of nitrogen into the system, could be easily caused by even mild wind and the infrequent passing of ships. Microscopic examination of the phytoplankton composition showed additional contribution of benthic species such as Paralia sulcata into the waters, which increase the productivity of oyster farms in the waters. The availability of nitrate and phosphate for primary production was temporarily limited throughout most of the spring and autumn blooming season.

잔디(Zoysia japonica Steud.) 육묘 이식재배법에 관한 연구 VI. 예초고에 따른 월년생 잡초종의 억제효과 (Study on Transplanting Cultural Methods of Turf Seedling VI. Depression Effect of Biennial Weed Species as Mowing Height)

  • 이명선
    • 한국자원식물학회지
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    • 제24권2호
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    • pp.260-266
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    • 2011
  • 잔디 실생묘를 이식하여 조성된 잔디밭에서 초봄의 생육 초기에 많은 피해를 주고 있는 월년생(동생) 잡초를 방제하고자 예초실험을 실시한 결과 요지는 다음과 같다. (1) 전체 예초 시험구별 잡초발생율은 평균 17.9%였다. (2) 저 예초 시험구인 12.5 mm 구에서 잡초발생율은 24.7%로 높게 나타나, 4개의 예초 시험구 가운데 잡초억제효과가 가장 낮은 것으로 나타났다. (3) 22.5 mm 구에서는 10.6%의 잡초발생율을 보여 가장 높은 잡초억제효과를 나타내고 있다. (4) 고 예초 시험구인 32.5 mm 구와 42.5 mm 구에선 각각 평균보다 다소 높은 18.2%와 18.3%의 잡초발생율을 나타냈다.

식음료 이벤트의 고객 선택속성에 관한 연구 (Research about Choice Attribution Customers make in Food & Beverage Events)

  • 박종훈;진양호
    • 한국조리학회지
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    • 제10권1호
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    • pp.32-45
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    • 2004
  • This study is about choice attribution of customers make in food and beverage events. The researcher provided practical plans to uplift food-related enterprises and activate management through surveys and positive analyses, targeting customers who use food services. First of all, all event plans must include customer demands, social changes, special qualities of the business, and market research. Second, low demand season must be customers will be induced to the events. Third, prediction for market variable and solutions must be thoroughly examined and plans should look into the future to maintain a long period of time. Fourth, sufficient communication between planners and employees should be made before the event starts, so that food and beverage businesses can gain trust and quality of event services.Fifth, immaterial service and visible goods/menus in business of food and beverage events must be closely matched. Sixth, menus introducing a variety of merchandise, quality of nutrition and health of the business should be developed. Also, events from countries(regions) should be hold to create a market of cultural exchange. Seventh, for hereafter event plans, feedbacks are needed concerning customers needs and demands through customer care, after the food and beverage events. Eight, faculty management for convenience, kindness, safety, and life preserver accommodations in parking areas must be made, as automobiles are necessaries for people in Mycar era. The ninth, off-line and on-line care through on-line business construction and production of homepage must be done, due to the fact that even the well-made events are bound to fail if they are not delivered to the customers.

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앙리 마티스 회화 이미지를 응용한 캐쥬얼 룩 디자인 연구 (A Study on Design for Casual Look Applying Painting Images of Henri Matisse)

  • 심미정;유금화
    • 복식문화연구
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    • 제18권4호
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    • pp.612-625
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    • 2010
  • People have more expectations for arts and design and accordingly, various artworks were combined with fashion to meet the consumer needs. As people live a decent life, the development of leisure activities and industry has a much effect on apparel. With this phenomenon, a free and active casual look is making progress centering around the practical apparel, pursuing diversified efficiency irrespective of a season and considering sensibility not formality. In this study, paintings of Henri Matisse were analyzed in every respect and were applied in apparel design with diverse color arrangement and a motif originating in the phenomenon of modern fashion design which leads to the integration of arts and design. Painting image and color of Henri Matisse were used. Sportive casual and cultural casual was used in design as well. Originality of its color in the paintings which were used an a motif is coming from Gauguin and Gogh. Henri had influenced to the next generation with pursuit of violent color. The following conclusions were drawn from this study. First, the color of Henri Matisse's paintings has a strong contrast effect. It combines notable violent color with a simple yet decorative motif. Therefore color from Matisse's paintings suit for apparel of marked individuality with its free color arrangement. Second, free and active image in Henri Matisse's paintings is easy to express efficiency and popularity. It accords with the feature of casual wear. Third, through adding a flowing curved line in Henri Matisse's paintings to materials and applying various colors putting into a curved line image to a rib section, a decorative effect which goes with the whole shape is obtained. This study presents possibility of emergence of unique design using free color arrangement and motif from the image of paintings and aims development of modern fashion design in accordance with modern fashion giving importance to the difference and sensibility by integration of modern garments and artworks.

토지이용이 농업소유역의 수질에 미치는 영향 (Effect of Land Use on the Water Quality of Small Agricultural Watersheds in Kangwon-do)

  • 최중대;이찬만;최예환
    • 한국수자원학회논문집
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    • 제32권4호
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    • pp.501-510
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    • 1999
  • 북한강 수계의 농업소유역에 대하여 하천수(2년)와 지하수(1년) 수질을 모니터링하여 분석하였다. 농업소유역의 주요한 비점원 오염물질인 총질소, 질산성 질소, 총인, BOD, TSS 및 대장균 농도를 주기적으로 측정하였다. 계절에 따른 수질의 변화 및 지하수와 하천수 수질과의 관계 비교를 통하여 토지이용이 수질에 미치는 영향을 분석하였다. 연구유역의 지하수 수위와 총질소, 질산성 질소의 농도의 벼농사와 밀접한 관련이 있었고 지하수와 하천수의 질소농도의 변화도 밀접한 관련이 있음이 나타나 벼농사가 하천의 질소농도에 많은영향을 주는 것으로 나타났다. 그러나 토지이용(벼농사)과 지하수 및 하천수의 총인, BOD, 대장균 농도 사이에는 일정한 관계를 발견할 수 없었다. 본 연구결과는 농업소유역의 수질변화를 이해하고 소하천의 수질관리정책을 개발하는데 유용하게 활용될 수 있을 것이다.

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