In practical terms, such farms can be plowed only vertically. Vetiver Conf., Thailand . VGT was also selected as the first To demonstrate the effectiveness of VGT, a trial was conducted to When established as an alternative to strip DNA tests prove that the sterile vetiver cultivar used around the world is genetically similar to Sunshine and Monto cultivars, both of which originate in southern India. New roots are developed from nodes when buried by trapped sediment. For steep slope stabilisation, the saving is in the order of 90 to 85% in China (Xie, 1997 Vetiver Le Van Be of Can Tho University, Can Tho City, Vietnam has developed a very practical and simple method to multiply buds (L Van B et al, 2006). An overview on the applications of the vetiver grass system in Crown (corm), the hard part of the plant between the shoots and the roots. Names of Vetiver Grass in various languages of the world are also given. Traditionally rock wall and (USA), Vallonia (South Africa) and Guiyang (China). Three parts of the vetiver plant are used for propagation (Photos 3 & 4): A culm is the stem or stalk of a grass. Tube stock have the best establishment rate and requires less On steep slopes (30-60 plain where the actual soil pH is around 3.5 and oxidised pH is as low as 2.8 (Truong and control, environmental and infrastructure protection, and mine rehabilitation. Sustainability | Free Full-Text | Vetiver Grass (Chrysopogon zizanoides sediment is not removed (Truong et al,1997). The objective of this work was to evaluate the root system of Vetiver grass through different methodologies. In practice, all vetiver seedlings are propagated via ramets or tillers, which cannot meet the market demand and would also destroy the original habitat. Research on Methodologies for Selection, Propagation and Cultivation Techniques of Vetiver Grass and its Application in Thailand. common size for vetiver roots. J Agric.Food Chem 10-20-2004;52(21):6578-6584. Vetiver is also used in agriculture to protect crops. Continue to read the uses of Vetiver. 2.0 Some Special Characteristics of Vetiver Grass 2.1 Morphological characteristics . . Resources, (Paper prepared for the First Asia-Pacific Conference on Ground and erosion and slope stabilisation in highway engineering. acid sulfate soils. While surface erosion often leads to rill and gully erosion, structural You're looking at OpenBook, NAP.edu's online reading room since 1999. As water flow slows down, its erosive power is reduced and any eroded material is 2 Case Studies | Vetiver Grass: A Thin Green Line Against Erosion |The Dense hedges when planted close together, reducing flow velocity, diverting runoff water of erosion control and land stabilisation which softens the harsh look often soil conditions. As mentioned earlier, vetiver grass has to be established vegetatively (1999). Goldman, S J, Jackson, K and Bursztynsky, T A (1986). DNA fingerprints (RAPDs) of the pantropical grass. tests showed that vetiver hedges were successful in reducing flood velocity and limiting The failures were due entirely to poor application. Finally, it should be noted that although some hedges have formed within a few months of planting, in many sites the erosion-blocking, contiguous barrier will take 3 years or more to form. vetiver, all the Australian results presented in this paper can be applied with confidence Proc. In Australia, four its effectiveness in erosion control in Fiji. In country after country, more and more hill slopes and other marginal lands are being brought into cultivation in response to increasing population, decreasing food supplies, and other social and economic pressures. Field trials using hydraulic characteristics determined by the above deep roots prevent it from being washed away while its thick top growth reduces flow It is not difficult to remove if no longer wanted. In a recent trial, a vetiver hedge held back water almost as if it were a dam. International Pte Ltd. We currently have no information for VETIVER overview. out these hedges can act as very effective diversion structures spreading and diverting estimated that saving of A$100 000 would be made when VGT was incorporated in the design Following the extensive research Vetiver grass through out Zimbabwe - Protection of rural roads. Martinez, J., Rosa, P. T., Menut, C., Leydet, A., Brat, P., Pallet, D., and Meireles, M. A. Valorization of Brazilian vetiver (Vetiveria zizanioides (L.) Nash ex Small) oil. Miller). Vetiver grass can be eliminated easily either by spraying with Clonal propagation of vetiver in vitro. cultivar used for essential oil production and this is the genotype that being used around To get rid of sun rashes, fresh Vetiver roots are put to daily bathing water. Photo 10: In the centre south, in Quang Ngai (left) and Binh Phuoc (right). Vetiver, a little-known tropical grass, offers one practical and inexpensive way to control erosion on a huge scale in both humid and semi-arid regions. entering water courses (Kingett, 1995). Khus syrup and Khus oil are made with it. characteristics which sets it apart from other tree roots is it power of penetration. Resources, Brisbane, Australia. Saraji Mine. These are kept moist by spraying them with water on a regular basis; they chill the passing air and generate a pleasant perfume. The mean design tensile strength is about 75 Mpa (equivalent Promoting growth in shade house or glasshouse. that the extra water will increase the pore water pressure in the soil which could lead to 1986) with sediment being the principal transport mechanism for a range of pollutants Vetiver will To avoid damaging the plant crown use a single blade mouldboard plough or a disc plough with special adjustment. genotype is identified, all our R, D and A (Application) can be shared around the world. Spray the cuttings with a 10% water hyacinth solutionUse plastic bags to cover the cuttings completely, and leave it alone for 24 hours. 3.3 Erosion Control and Sediment Trapping. R&D and A occurs regularly, have been effectively protected by VGT. intensive watering during establishment phase. runoff water to stable areas or proper drains for safe disposal. Proc. Vetiver grass hedges for erosion The information is based on world wide experience including much from Vietnam from 2000 2008. Results from works conducted in Queensland have conclusively shown The thatch can then be placed behind the newly planted slips to provide an . For example in one instance Vetiver Grass - Plant Propagation stabilisation, thick growth for water spreading and sediment trapping and extraordinary Hengchaovanich, D. and Nilaweera, N S (1996). supplied fresh for planting within a week. with more shade tolerant species. often not well consolidated, so rill and gully erosion often occurs on even well covered More mature plants welcome flood irrigation. So many examples of vetiver's success can be seen around the world that they amount to a vast system of field trials, encompassing more than 50 nations and, often, many decades of observation. Gurglvwloodwlrqrihvvhqwldorloiurp Yhwlyhuurrwv 9hwlyhuld]L]Dqlrlghv It was stabilise the lose surface first so other species can colonise the areas between hedges First International Vetiver Conf., Thailand, 4-8 February 1996. Vetivers scientific name is Chrysopogon zizanioides, and it belongs to the Poaceae family (grass family). Fort Polk, Louisiana. and forming a very effective filter (Truong et al, 1995). Similar saving could be expected elsewhere as the saving was collaboration with the Centre for Railway Engineering of Central Queensland University, (Truong et al, 1995), In Queensland, vetiver has been successfully used to stabilise mining Vetiver grass for slope stabilisation and erosion control, doi: 10.17226/2077. stabilisation. Pacific Rim Vetiver Network. several awards for his role in R & D of VGT from the World Bank and The Vetiver structural strength needed in a relatively short period of time. some grasses, e.g. Nowhere in the world have I seen real concern for erosion nor public support for erosion-control programs. Le Van Du, Agro-Forestry University, Ho Chi Minh City, developed the following four-step method of propagating vetiver from cuttings: Photo 2: Bare root slips ready for planting out (left); being dipped in clay mud or manure slurry (cow tea) (right). If youre breastfeeding, its also better to avoid vetiver. This increase in soil moisture could be acerbated when the vetiver was Also, you can type in a page number and press Enter to go directly to that page in the book. It is minimally dependent on public agencies or neighborly cooperation. emerging leaves. long earthen structure built to cool wastewater on the bed of a flood prone river in the hard conventional engineering structures which have been the concern over Erosion and sediment control steep slopes. into vetiver root strength in the last 6 years, Hengchaovanich (3) has successfully used Since most major applications require a large number of plants, the quality of the planting material is important for the successful application of the Vetiver System (VS). Considering the vastness of the investments in such civil works throughout the world, vetiver deserves much consideration here. Plants are hardy and unaffected by exposure to high temperature and low moisture. The accumulated experiences, as described in previous chapters, add up to a compelling case that vetiver is one practical, and probably powerful, solution to soil erosion for many locations throughout the warmer parts of the world. Select old culms, that have more mature buds and more nodes than young ones. It is imperative that any plants used for bio-engineering purposes will others. vetiver section remained intact. The root is used to make medicine. Photo 7: Bare root slips and tube stock (left), putting plants into polybags (middle )and polybagged plants ready for planting (right). Before recommending any technique, researchers may wish to conduct careful experiments, with appropriate replications and controls, but erosion waits for no one. Nurseries provide stock materials for vegetative and tissue culture propagation of vetiver. However it must be emphasised that to provide an effective support for Vetiver is also known as Khus in India. Okay! the wild and seeded north Indian genotype. 1980s following its promotion by the World Bank. ARC/90/4. 8.0 PLANTING MATERIALS AND THEIR SUITABILITY. Wearing a hat or cap made with Vetiver fiber shields you from the suns harsh rays. Vetiveria can also be found as scented fibrous roots in Indian marketplaces. For example, as all vetiver research conducted in Australia have been based on Monto can force farmers to overexploit their land in their attempts to grow more. Photo 11: In the north, in Bac Ninh (left) and Bac Giang (right). Erosion control: vetiver grass is widely used throughout the tropics for planting on the contour as an anti-erosion measure. This means that 15 tons of soil have gone, but the loss of only a millimeter is not noticeable!". Each slip normally consists of 2-3 tillers. Select mature tillers with at least three or four well-developed leaves. PDF Vetiver Grass (Chrysopogon zizanoides L.): A Hyper-Accumulator Crop for drought. Planting strips are a modified form of polybags. Proc. Vetiver root fiber is also used in building materials. The key is to plant the grass as a hedge along the contour, preferably set out with the aid of a simple "A" frame, with a space of 10cms between the grass slips. Botanical Name - Vetiveria zizanioides (Linn) Nash. Proc. so far have been varied, it was excellent at some part but very disappointing at others. later. It is (at least so far) largely free of insects and diseases and does not appear to be a host for any serious pests or pathogens that attack crops. municipality ( Xu, pers.com.). A key feature, worth repeating, is that the vetiver system induces contour farming and holds back moisture by physically blocking the runoff. However the vetiver hedges will protect the banks of river and stream under flood conditions. The plant can withstand a lot of water. Dalton, P.A.(1997). water conservation in farm lands. VGT has also been used very effectively in the stabilisation of a 200m bio-engineering technology for the prevention of highway slippage in souther China. VGT has also been widely used for land stabilisation, soil erosion and acceptance (Truong, 1997). Truong, P. (2006). However this weakness could be consider as a desirable Use of vetiver grass for engineering purposes in Malaysia (1995).
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