• Title/Summary/Keyword: Cyperus

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AN ASSESSMENT OF FACTORS ASSOCIATED WITH INCREASED PRODUCTIVITY OF DAIRY FARMS IN FIJI

  • Kerr, D.V.;Fell, R.F.;Murray, A.J.;Chaseling, J.
    • Asian-Australasian Journal of Animal Sciences
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    • v.8 no.5
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    • pp.481-487
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    • 1995
  • A survey of physical inputs was conducted on the total population of dairy farms supplying milk to the Rewa cooperative dairy company in Fiji. The critical inputs associated with total farm milk production were determined using multiple regression, with analyses being conducted for each of the three identified supplier groups, bulk milk, canned milk and cream. Mean annual milk production per cow averaged 1460 (s.d. = 319), 889 (s.d. = 321) and 800 (s.d. = 451) litres for the bulk milk, canned milk and cream suppliers respectively. Stocking rate averaged 1.37 (s.d. = 1.18) cows per hectare over all farms. Inputs to pasture were universally low and Navua sedge (Cyperus aromaticus) was identified as a major weed. The average amount of supplement fed annually on a grain equivalent basis was 700 (s.d. = 984) kg per cow for bulk milk, 84 (s.d. = 198) kg per cow for canned milk and 146 (s.d. = 542) kg per cow for cream suppliers. The analysis of data from a small group of farms using nitrogen fertiliser indicated that their production levels were higher than the general population. This suggests that there is potential for the Fijian dairy industry to increase milk production through the use of higher inputs to cows and pastures. The regression models relating annual milk production from farms to the two key inputs of number of cows milked and the amount of supplement fed were all significant (p < 0.001). The coefficients of determination for these models ranged from 56.9 to 89.4 percent.

Analysis of Ecological Variation after Creation of the Eco-pond (생태연못 조성공법 적용후의 자연생태 변화분석)

  • Lee, Eun Yeob;Moon, Seok Ki
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.4 no.1
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    • pp.1-15
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    • 2001
  • The purpose of this study is to evaluate the creation techniques of eco-pond, one of biotopes to promote biodiversity in urban residence area. Investigation were classified out plant, mammals, amphibia, reptiles, birds, fishes and insects. The results were summarized as follows: Around the eco-pond shows simple vegetation structurs, consisted of Pinus densoflora S et Z. and Robinia pseudoacacia under competition. In case of shrub, consisted of 4 species but plant growing appearence diversely by seasons. The evaluation of vegetation of eco-pond, there are found 4 species of aquatic plants. Inside the revetment of pond, Echinochloa crus-galli, Persicaria hydropiper, Digiaria sanguinalis, Cyperus microiria and Bidens frondosa L. are mainly distributed. Near the revetment, Trifolium repens L. and Digiaria sanguinalis are prevailed. And in its background, Erigeron canadensis, Erigeron annuus and vines are begins to make their appearances. When evaluation animals in eco-pond and contrast plot, it show simple species and numbers of mammals. It seemed to be resulted from its isolation and outside intervention by users In eco-pond, Pica pica and Streptopelia orientalis are mainly found and in contrast plot of Columba livia, which are so strong adaptation to city life environment. In case of amphibia and reptiles, none is observed in contrast plot, but in ecological pond, Rana nigromaculata and Hyla japonica are constantly observed. In case of insects, more species are found in eco-pond than contrast plot. And in eco-pond, more dragonflies are visibly increased one year after its construction. In floral zone inside of pond revetment, grasshopper and Locusta migratoria are frequently observed. In case of butterflies, they are mainly found in log fence and willow(salix) around eco-pond. In case of fishes inside of eco-pond, the species and its density are remarkable increased one year after the construction. With above evaluation results, we have identify the increase effect of biodiversity after construction of the eco-pond.

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Refering to Sundry Records about Cause, Process and Treatment of Jungkijeung(Zhongqizheng) (중기(中氣)의 병인병기(病因病機) 및 치료(治療)에 관한 문헌고찰(文獻考察))

  • Hong, Suk;Lee, Dong-Won
    • Journal of Oriental Neuropsychiatry
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    • v.11 no.1
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    • pp.115-130
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    • 2000
  • Object: Show the treatment about Jungkijeung (Zhongqizheng) by distinguishing Apoplexy(Zhongfeng), yujungfung(Leizhongfeng), gualjung(Juezheng), and observation of cause, process, quality. Method: Researched definition, cause, process, treatment and herb med through chinese & korean medical publication refered to Jungkijeung(Zhongqizheng) Result: 1. Jungkijeung(Zhongqizheng) is simmilar to Apoplexy(Zhongfeng) that spiritual shock occurred to syncope, dysarthria, trismus, quadriplegia. But the symptom of Jungkijeung(Zhongqizheng) is coldness, no-sputum, sink-pluse; that of Apoplexy(Zhongfeng) is warmness, much secretion, float-pulse. 2. Jungkijeung(Zhongqizheng) is mainly caused by the serious anger and the reverse movement of spints by the seven emotional factor. The process of Jungkijeung(Zhongqizheng) are "Fire and Fever(huore)" "Weatness and sputum(shitan)", and most importantly "Weakness of vital-qi(qixi)" 3. The treatment of Jungkijeung(Zhongqizheng) is adjustment and circulation of jiao. In early stage, don't use of Apoplexial- Med. 4. As following herb-med are used for Jungkijeung (Zhongqizheng). Sohaphang-won(Suhexiangyan) is 18 times; Palmisungi-san(Baweishunqisan) is 13 times; Kang-tang(Jiangtang) is 8 times: Mokhyangsungi san(Muxiangshunqisan) is 6 times. 5. Atractylodes macrocephala KOIDZ(Baishu) is used for 40 times most frequently, Saussurea lappa CLARKE (Muxiang), Cyperus rotundus L (Xiangfuzi), Citrus unshiu MARCOR(Chenpi), Glycyrrhiza uralensis FISCH (Gancao), poria cocos WOLF (Furing), Panax ginseng NESS (Renshen) etc are orderly used. 6. Acupoints same as GV20(Baihui), LI4(Hegu), Liv2(Xingjian), 12 Junghyul(Jingxue) is used for acupunture. And CV8(Shenque), CV4(Guanyan) is used for moxibustion. Conclusion: As Jungkijeung(Zhangqizheng) is differed from Apoplexy(Zhongfeng), yujungfung(Leizhongfeng), gualjung(Juezheng), we must also cure Jungkijeung (Zhongqizheng) to the other disease. It is need to distinguishment Jungkijeung(Zhongqizheng) from neurotic, psychotic disease, though similar to conversation neurosis.

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Germination Characteristic of Rhizomes of Major Monocotyledonous Weeds in Coconut Plantations of Sri Lanka

  • Senarathne, S.H.S.;Bandara, D.M.B.M.;Sangakkara, U.R.
    • Korean Journal of Weed Science
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    • v.32 no.3
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    • pp.180-187
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    • 2012
  • Panicum maximum, Panicum repens, Imperata cylindrica, Pennisetum polystachion and Cyperus rotundus are five rhizomatous grass weeds that exist and are problematic in the coconut lands of Sri Lanka. Rhizomatous weeds are the most difficult to control because of their vegetative reproduction by underground propagules. Therefore chemical and biological techniques have failed to control these weeds to acceptable levels. Experiments were conducted to investigate the impact of depth of burial, duration of sun drying or duration of air drying rhizomes of the selected weed species on germination. Depth of burial reduced germination of all species. Burying rhizomes at depths less than 10 cm inhibited germination of P. maximum and P. polystachion. Burying depths below 30~40 cm inhibited germination of all species. Sun drying or air drying rhizomes for durations less than 5 days inhibited germination of P. maximum and P. polystachion. Germinations of all species were inhibited by sun drying rhizomes for 15 days or air drying rhizomes for 20 days. Sun drying of rhizomes of all species for five days reduced the moisture content to a greater extent than air drying. The results indicated that burying rhizomes at the depthsbelow 30~40 cm, sun drying rhizomes for durations beyond 15 days or air drying rhizomes for durations beyond 20 days would be effective in controlling germination of these species. The investigations of the experiments also suggest that keeping rhizomes on the soil surface without burying, sun drying rhizomes or air drying rhizomes for durations of 5~15 days would produce weak plants.

Identification of natural insecticidal compound in medicinal plants against diamondback moth (약초(藥草) 중에 존재(存在)하는 배추좀나방에 대한 천연살충성(天然殺蟲性) 물질(物質)의 동정(同定))

  • Chun, Jae-Chul;Kim, Sung-Eun;Kim, Jin-Cheol;Cho, Kwang-Yun
    • The Korean Journal of Pesticide Science
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    • v.3 no.1
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    • pp.13-19
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    • 1999
  • Insecticidal potentials of polar and non-polar tractions obtained from 84 medicinal plants were screened against five major agricultural insects. Based on the primary and secondary screening results, non-polar fraction of Atractylodes koreana Kitam. rhizomes was selected to isolate and identify an active compound effective to diamondback moth (Plutella xylostella L.) larvae. Counter-current distribution separation on the non-polar fraction and TLC and spectroscopic analyses (GC-MS and $^{1}H$- and $^{13}C$-NMR) revealed that molecular formula of the active compound was $C_{15}H_{22}O$ known as a sesquiterpenoid 4,11-selinadien-3-one (${\alpha}$-cyperone). However, ${\alpha}$-cyperone was not detected in the non-polar fractions that showed high insecticidal potential against the diamondback moth. Although ${\alpha}$-cyperone has been first identified from Cyperus rotundus, the compound did not occur in C. rotundus cultivated in Korea.

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The Search for Naturally Occurring Herbicidal Compounds - I. Screening Search for Herbicidal Substances in Higher Plants (천연에서부터 제초활성물질의 탐색 - 제1보 식물체에 함유된 제초활성물질의 검색)

  • Ahn, J.W.;Kim, J.S.;Cho, K.Y.
    • Korean Journal of Weed Science
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    • v.9 no.1
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    • pp.69-75
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    • 1989
  • To search germination inhibitors in higher plants, first of all, some experiments containing selection of test weed seeds and effects of solvents and surfactants for bioassay establishment were conducted. Then MeOH-extracts of 45 plants were assayed for germination inhibition activities against Echinochloa crus-galli (L.) Beauv, Digitaria sanguinalis (L.) Scop., Cyperus iria L., Portulaca oleracea L. and Oenothera lamarckiana Ser. seeds. Among them extracts from Rhathiolepis ovata Briat and Picea abies (L.) Karst showed strong inhibitory effect (60-90% inhibition) on the germination of tested weed seeds at 5000 ppm. On the other hand, the extract from Youngia sonchifolia Max stimulated the germination and growth of tested weeds.

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Biological Characteristics of New Paddy Field Herbicide Metazosulfuron Granule for Paddy Weeds (신규 수도용 제초제 Metazosulfuron입제의 생물특성)

  • Lee, In-Yong;Kim, Chang-Seok;Lee, Jeong-Ran;Moon, Byung-Chul;Lee, Chang-Gyu
    • Korean Journal of Weed Science
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    • v.31 no.3
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    • pp.308-312
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    • 2011
  • A new paddy field herbicide, metazosulfuron granule is an herbicide for controlling annual and perennial weeds occurring in machinery transplanting paddy field. It is recommended to apply $30kg\;ha^{-1}$ 15 days after transplanting. As a result of preliminary tests, it could control seven annual species such as Echinochloa crus-galli, Bidens tripartita, Ludwigia prostrata, Monochoria vaginalis var. plantaginea, etc. and four perennial species including Cyperus serotinus, Sagittaria trifolia, Eleocharis kuroguwai, and Scirpus juncoides. Monochoria vaginalis var. plantaginea, S. trifolia and S. juncoides resistant to sulfonylurea- herbicides were also controlled. Because application timing of the herbicide is wide, it is very efficient to control the spraying timing by users. Phytotoxicity of rice cultivars was not observed, and the impact on the environment is very limited.

Effects of Ethanol Extract of Saussurea lappa on the Growth, Acid Production, Adhesion, and Insoluble Glucan Synthesis of Streptococcus mutans (목향 에탄올 추출물의 Streptococcus mutans에 대한 성장, 산생성, 부착 및 비수용성 글루칸 합성 억제에 미치는 영향)

  • Yu Hyeon-Hee;Kim Yeon-Hwa;Lee Jun-Sup;Lee Ki-Hyun;So Hong-Seob;Jeon Byung-Hun;You Yong-Ouk
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.19 no.5
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    • pp.1195-1199
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    • 2005
  • In the present study, Inhibitory effects of the ethanol extract of Saussurea lappa (S. lappa) on the growth, acid production, adhesion and water-insoluble glucan synthesis of Streptouccus mutans (S. mutans) were examined. The growth and acid production of S. mutans were Inhibited by the presence of ethanol extract of S. lappa (0.5-4 mg/ml) significantly. The ethanol extract of S. lappa (0.25-4 mg/ml) also significantly lowered the adherence of S. mutans in a dose dependent manner. In water-insoluble glucan synthesis assay, 2-4 mg/ml of the ethanol extract of S. lappa significantly inhibited the formation of water-insoluble glucan. These results suggest that S. lappa may inhibit the caries-inducing properties of S. mutans. Further studies are necessary to clarify the active constituents of S. lappa responsible for such biomolecular activities.

Weed Occurrence in Paddy-Upland Rotating Field (답전윤환재배지(畓田輪換栽培地)에서의 잡초발생동태(雜草發生動態))

  • Kim, K.U.;Shin, D.H.;Park, S.J.;Jeong, J.W.;Yeo, M.H.
    • Korean Journal of Weed Science
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    • v.15 no.4
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    • pp.305-312
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    • 1995
  • Weed communities in the dry-direct seeded rice(Oryza sativa L.), soybean(Glycine max(L.) Merr.), and dry-direct seeded rice-soybean rotation system from the transplanted rice field were investigated in order to identify a change in weed species by paddy-upland rotation. Echinochloa species was the most dominant species in the dry-direct seeded rice and their great increase was observed in the continued practices of dry-direct seeded rice. Echinochloa spp., Chenopodium ficifolium, and Digitaria spp. were identified as the major weeds in soybean cultivation in paddy field. Practice of soybean rotation in the dry-seeded rice reduced weed occurrence, particularly at the soybean after 2-yr continued dry-direct seeded rice and at dry-direct seeded rice culture after 2-yr continued dry-direct seeded rice and at dry-direct seeded rice culture after 2-yr soybean compared to the continued cultures of rice or soybean. In addition, cultivation of dry-direct seeded rice or soybean culture in the paddy rice field seemed to be helpful for suppression of perennial weeds(Eleocharis kuroguwai, Cyperus serotinus, Scirpus juncoides) and aquatic weeds(Monochoria vaginalis, Sagittaria spp. Potamogeton distinctus).

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A Case Study on the Slope Revegetation Technology of Biological Engineering Using the Ligustrum obtusifolium (쥐똥나무를 이용한 생물공학적 비탈면 녹화공법의 사례연구)

  • Kim, Hyea-Ju;Kang, Hyo-Suk
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.2 no.3
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    • pp.47-53
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    • 1999
  • This study was carried out to suggest the slope revegetation technology of biological engineering using the Ligustrum obtusifolium, which is one of the pioneer plant species. Ahead of the experimental construction, we evaluated the L. obtusifolium's value of biological engineering for the slope stabilization by testing the growth rate after the cuttings were buried for 8 weeks('98. 7. ~ '98. 9.). In this test, it was found that the L. obtusifolium, one of the species deep rooted with developed underground parts, is very effective for the slope stabilization and that the rooting powder(Hormex Powder) gave the better effects on root germination. In April of 1999, the experimental construction of biological engineering technology using recycled L. obtusifolium live cuttings(applied growth-stimulating compound) and green bags was conducted at sandy cut-slope in GLEN ROSS G.C.(Yongin). The slope was tolerant of soil erosion despite of heavy rainfall in the rainy season and many plant species invading for five months('99. 4. ~ '99. 9.). The vegetation research was performed through examining the frequency of each block using the transect method. 21 kinds of plant speices appeared in total area($25.5m^2$) and the dominant species are Digitaria sanguinalis, Setaria viridis, Cyperus amuricus, Persicaria blumei, Artemisia princeps var. orientalis. With regard to life forms, therophytes were shown with a dominant distribution of 66.7% of total species and neophytes relatively with a low distribution of 19.0%. Furthermore, it can be estimated that there is no ecological stabilization of this slope with the result of the ruderal species' occupation of 71.4%. It is too early to argue about ecological mechanical advantages and disadvantages of this technology, but, from the result of this study, it is expected that the slope revegetation technology of biological engineering using L. obtusifolium can be effectively applied to sandy slope(not rock or weathered rock slope) and that the early rapid stabilization and favorable succession could be done with the improvement of soil condition.

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