• Title/Summary/Keyword: kudzu

Search Result 50, Processing Time 0.031 seconds

Studies on Mass Production , Utilization and Bioactive Substance of Kudzu I. The effect of concentrated sulfate on germination rate and growth chracte in kudzu (칡의 대량 생산이용 및 생리활성물질에 관한 연구 I. 진한황산 처리가 칡 종자의 발아 및 생육에 미치는 영향)

  • 정대수;김대진
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.13 no.3
    • /
    • pp.190-194
    • /
    • 1993
  • This experiment was conducted to investigate the effects of concentrated sulfate on the germination rate, growth rate and the productivity of weight of kudzu (Pueraria thwnbergiana Bentham). The germination rate of kudzu seed by one or two treatment retreatment with the concentrated sulfate for minutes of 5. 10, 15 and 20 were determined respectively. The results obtained were summarized as follows; 1. In the time of concentrated sulfate treatment, the germination rate was the highest in the once treatment for 20 minute. and the retreatment was higher than the once treatment in the germination rate. 2. The changes of plant length by growth stage was grown gradually until for 60 day and rapidly after for 60 day. The growth rate was the highest in treatment for 15 minute than in other treatments. 3. The stem diameter. stem weight. fresh weight and root weight by the treatment with sulfate 15 minute as the treatment with once were high degree of productivity. 4. The number of branch. number of nodes and root weight by the growth stage were higher growth rate before for 90 day than after for 90 day, however stem weight and fresh weight were high degree of productivity after for 60 day.

  • PDF

Postural Risk Assessment of Weed and Kudzu Removal Operations (숲가꾸기를 위한 풀베기와 칡덩굴제거작업의 근골격계 부담 분석)

  • Lee, Eunjai;Baek, Seung-An;Cho, Koo-Hyun
    • Journal of Korean Society of Forest Science
    • /
    • v.109 no.2
    • /
    • pp.195-201
    • /
    • 2020
  • A forest operation is considered as one of the riskiest environments for the development of musculoskeletal disorders because operators are exposed to harmful environmental conditions such as rough terrain, inclement weather, and poor working postures. In weed and kudzu removal operations, manual application is still common in Korea. In this study, we evaluated the ergonomic conditions of weed and kudzu removal in regeneration forests and the associated risk of musculoskeletal disorders. The risk of musculoskeletal disorders was evaluated using the Ovako Working Posture Analysis System and postural risk index. Postural risk was significantly higher for kudzu compared with weed removal operations. This suggests that kudzu removal operations must be improved to decrease postural risk.

The Influence of Kudzu Root Starch on the Growth and Metabolism of Baker's Yeast During Aerobic Semi-Solid Fermentation (반고상 발효에서의 빵 효모 증식과 신진대사에 대한 갈근 전분의 영향)

  • 박돈희;선우창신;로버트디태너;죠지밀러니
    • Korean Journal of Microbiology
    • /
    • v.24 no.4
    • /
    • pp.385-388
    • /
    • 1986
  • In a study of the aerobic growth of Baker's yeast (Saccharomyces cerevisiae) on Maxon-Johnson medium (with glucose as substrate) solidified with kudzu root starch, it was observed that between 8 and 24 hour incubation. 10 and 12% solids stimulated greater cell production than did 6 and 8% solids. The concentration of solids also affected thd secretion of protein from the yeast cells with the highest content of extracellular protein at 10-24 hour incubation stimulated by 10% starch solids.

  • PDF

Leaf Spot of Kudzu (Pueraria lobata) Caused by Alternaria tenuissima (Alternaria tenuissima에 의한 칡 점무늬병)

  • Kim, Ja-Moon;Lee, Jung-Sook;Song, Wan-Yeob;Lee, Sook-Kyung;Kim, Hyung-Moo;Seo, Byung-Soo
    • Research in Plant Disease
    • /
    • v.10 no.2
    • /
    • pp.126-129
    • /
    • 2004
  • In July of 2002, leaf spot disease was found on kudzu (Pueraria lobata) leaves in Jeonbuk province. A small leaf spot was appeared on leaves as a typical symptom and the spot was then surrounded by chlorotic halo. The lesions were expended and coalesced and the infected leaves became yellow leaf and later fall out. A causal fungal pathogen was isolated and the colony of the pathogen was light gray green to dark green on PDA. The pathogen produced mostly the single conidium but rarely long chain of 3 to 8 conidia. The conidia were dark brown in color, long ellipsoid or oval and 20-60 ${\times}$ 10-25 ${\mu}{\textrm}{m}$ in size. Their septa were 4-8 transverse and 1-2 longitudinal or oblique. The pathogen was, therefore, identified as Alternaria tenuissima based on cultural and morphological characteristics. This is the first report on the leaf spot of kudzu caused by A. tenuissima in Korea.

Leaf Blight of Kudzu (Pueraria lobata) Caused by Rhizoctonia solani (Rhizoctonia solani 에 의한 칡 잎마름병)

  • Kim, Hyung-Moo;Song, Wan-Yeob;Seo, Byung-Soo;Ko, Jeong-Ae
    • Research in Plant Disease
    • /
    • v.11 no.1
    • /
    • pp.77-79
    • /
    • 2005
  • Leaf blight of kudzu was found in Jeonbuk province in 2002. Water-soaked lesion appeared on leaves, and young stems and gray green blight sypmtom expanded from margin to main vine of leaves. As the disease became severe, blighted leaves and shoots turned dark brown and then collapsed. The causal pathgen showed initially white aerial mycelium and turned brown to gray. Mycelia were branched at 90o angles and multinucleate in one cell. It formed sclerotia on PDA. Slerotia were irregular, globose and 0.5~3.0 mm in diameter. The causal fungus of leaf blight was identified as Rhizoctonia solani Kuhn based on the cultural and morphological characteristics. This is the first report on leaf blight of kudzu caused by R. solani in Korea.

Antioxidant Properties of Commercial Noodles Supplemented with Functional Ingredients (기능성 부재료를 첨가한 시판 국수류의 항산화 특성)

  • Son, Jong-Youn;Kang, Kun-Og
    • Journal of the East Asian Society of Dietary Life
    • /
    • v.24 no.2
    • /
    • pp.183-189
    • /
    • 2014
  • We investigated noodles supplemented with functional ingredients for their antioxidant properties, including total phenol, flavonoid contents, electron donating, nitrite scavenging abilities and ferrous ion chelating effect. The total polyphenol contents of functional noodles arranged in order of decreasing concentration were kudzu (7.98%) > green tea (4.99%) > pumpkin (5.03%) > mulberry leaves (4.99%) > mugwort (4.23%) > cactus (3.57%) > kelp (3.33). The total flavonoid contents in green tea noodles were the highest as 4.35%. The electron donating ability in mugwort noodle was the highest as 12.27% at 1,000 ppm. This amount was 4.85 times than that of wheat flour noodle (2.53%). The nitrite scavenging ability of functional noodles at pH 1.2 arranged in order of decreasing concentration were green tea (66.52%) > cactus (55.12%) > kudzu (52.67%) > pumpkin (50.50%) > mulberry leaves (43.58%) > kelp (41.41%) > mugwort (37.66). The nitrite-scavenging ability of green tea noodle was lower than ascorbic acid (natural antioxidant) 77.83%, while that of green tea noodle was similar with BHT (artificial antioxidant) 69.45%. The ferrous ion chelating effect of noodles containing kelp were the highest as 27.02%. All of the experimental results showed good antioxidant property. Thus, noodles supplemented with mulberry leaves, cactus, mugwort, green tea, pumpkin, kelp or kudzu, demonstrated to have good functional effects for human health.

Short-term Response of Vegetation to Cattle Grazing in an Abandoned Orchard in Southwestern Japan

  • Hayashi, K.;Ikeda, K.;Ueda, A.;Fumita, T.;Etoh, T.;Gotoh, T.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.19 no.4
    • /
    • pp.514-520
    • /
    • 2006
  • An abandoned mandarin orange orchard in southwestern Japan was set-stocked by Japanese Black cows at two stocking rates (1.0 and 2.0 animals/ha), and vegetation dynamics and diet selection by cattle were monitored for two years, in an effort to obtain information on effective use of abandoned agricultural fields for low-cost animal production and environmental conservation. Two dominant species at the commencement of grazing, kudzu (Pueraria lobata Ohwi) and tall goldenrod (Solidago altissima L.), showed different responses to grazing during the two years; the composition of kudzu decreased, contrasting with that of tall goldenrod which increased at both stocking rates. This was caused by high preference for kudzu and avoidance or low preference for tall goldenrod by cattle. Retrogression of vegetation due to cattle disturbances occurred at both stocking rates, with the high stocking rate leading to a lower degree of succession than the low stocking rate. It was shown that cattle grazing, particularly at a high stocking rate, was effective in the management of vegetation of an abandoned orchard.

First Report of Phytophthora Leaf Blight and Vine Rot of Kudzu (Pueraria lobata) in Korea

  • Kim, Byung-Soo;Wai, Khin Pa Pa;Siddique, Muhammad Irfan;Mo, Hwang-Sung;Yoo, Hee Ju;Kim, Hee Suk;Hong, Seung-Beom
    • Research in Plant Disease
    • /
    • v.26 no.2
    • /
    • pp.109-115
    • /
    • 2020
  • A disease causing leaf blight and vine rot was recognized on kudzu plants (Pueraria lobata) in Korea since 1991. A species of Phytophthora has been repeatedly isolated from the infected leaves. Identification in species level of the Phytophthora sp. remained unsolved. An isolate, KACC 47616 originally collected from Manchon Park in Daegu, has been kept in our laboratory. In 2013, three new isolates, KACC 47617 and KACC 47618 from Yeongyang and KACC 47619 from Gunwi in Gyeongbuk province, were collected and examined to classify up to species level by characterizing morphology, response to temperature and phylogenetic relationship. On the basis of morphological characters such as the nature of hyphal swelling, sporangia and sex organs, absence of chlamydospore production, optimum temperature for mycelial growth, and internal transcribed spacer rDNA and cytochrome oxidase subunit 1 sequence analysis of the pathogen, the causal fungus of kudzu plant was identified as Phytophthora asiatica.

Studies on Quality of Silage from Domestic Herbages IV. Effects of starch addition on the quality of leaf and stem silage of kudzu (야초 사일리지의 품질향상에 관한 연구 III. 칡 사일리지에 있어서 잎과 줄기의 전분첨가효과)

  • 김종쾌;이상훈;김영규;김대진
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.11 no.1
    • /
    • pp.60-67
    • /
    • 1991
  • This experiment was conducted to investigate the effects of starch addition on the fermentative quality and dry matter digestibility(DMD) of Kudzu(Puerari~ thzmbergii Bentham) silage. The herbages was ensiled by the conventional methods in small plastic silo of 7.5 liters with addition of starch of 0 %, 2 %, 4 74, 6 % and 8 %, respectivery. The samples of kudzu silage were separated into leaf and stem, and was determined the pH, organic acid and characteristics of fiber such as neutral detergent fiber(NDF), acid detergent liber(ADF) and acid detergent lignin(ADL). The DMD of leaf and stem silage were evaluated by pepsin-cellulase technique method. The energy values(tota1 digestible nutrients, TDN; digestible energy, DE; metaboliz;~bie energy. ME) were calculated by DMD. The results obtained were as follows: 1. The fiberous meterials(such as NDF, AIIF and ADL) of leaf and stem were decreased with increasing levels of starch(p

  • PDF

Analysis of the prescription for persons of Taiyin constitution (太陰人 Tae-eum) in the herbal formulas and cases found in classic texts (태음인 처방의 본초 조합 용례 분석 - 중요 고문헌을 중심으로 -)

  • Kim, SungWon;Lee, ByungWook;Kim, KiWook
    • The Journal of Korean Medical History
    • /
    • v.33 no.1
    • /
    • pp.31-41
    • /
    • 2020
  • Purpose : This study compares prescriptions in the 1901 edition of the Donguisusebowon (東醫壽世保元) and the 1901 edition of 24 Revised Tae-eum constitution prescriptions (新定太陰人病應用要藥二十四方) (1901PCDT) with medical herbs found in classical texts. This study also examines whether to include patterns which compose medical herbs for the person of Tae-eum constitution (太陰人). Method : The prescriptions for Tae-eum-in in the Shinchukbon and the ingredients of medical herbs of the prescriptions of the Complete Works of Zhang Jingyue (景岳全書), Secret Works of Universal Benefit (廣濟秘笈), Treasured Mirror of Eastern Medicine (東醫寶鑑), Comprised Edition for Formulas (方藥合編), Protecting Essence for Longevity (壽世保元), Introduction to Medicine (醫學入門), New Book for Saving People (濟衆新編 ENGLISH), and Compendium of Local Medicinals and Formulas (鄕藥集成方) were input into a database. The prescriptions were examined and combinations of medical herbs used to treat the person of Tae-eum constitution were noted. Result : Among the prescriptions for the person of Tae-eum constitution, similar examples of the 17 prescriptions of Kudzu Decoction to Relieve the Muscles (葛根解肌湯), Regulate the Stomach and Coordinate the Purity Decoction (調胃升淸湯), Clear the Heart and Lotus Pip Decoction (淸心蓮子湯), Decoction for Stabilizing Asthma with Ephedra (麻黃定喘湯), Profuse Heat and Sparse Cold Decoction (熱多寒少湯), Decoction for Coordinating Qi with Kudzu (葛根承氣湯), Major Decoction for Coordinating Qi with Kudzu (葛根大承氣湯), Minor Decoction for Coordinating Qi with Kudzu (葛根小承氣湯), Decoction for Dispersing the Exterior with Ephedra (麻黃發表湯), Boost the Lung Essence Decoction (補肺元湯), Major Supplementing Decoction with Deer Antler Velvet (鹿茸大補湯), Boosting Black Essence Pill (拱辰黑元丹), Honeylocust Fruit and Rhubarb Decoction (皂角大黃湯), Kudza and Duckweed Decoction (葛根浮萍湯), Sweet Flag and Polygala Powder (石菖蒲遠志散), Liriopis and Polygala Decoction Powder (麥門冬遠志散), and Cattle Gallstone Formula to Clear the Heart (牛黃淸心元) were found in important ancient literature and Dried Chestnut and Holotrichia Decoction (乾栗蠐螬湯) and Dried Chestnut and Tree of Heaven Root Bark Decoction (乾栗樗根皮湯) are the combination originally set by Lee Jema. Conclusion : Because 70.8% of the prescriptions in 1901PCDT could be found in literature which were pervasive in the period of the Joseon Dynasty (the period of Ming and Qing), it corresponds with Lee Jema's view that medical men in the Song, Yuan, and Ming Dynasties disclosed half of the prescriptions for Tae-eum person by studying these texts more.