improves with time as the vegetative cover matures. Use of vetiver grass for engineering purposes in Malaysia It is able to survive drought, flood, windstorm, fire, grazing animals, and other forces of nature, except freezing. Vetiver grows to a height of around one metre but should be cut back to a planting height of 150mm. Most vetiver genotypes flower but do not produce seeds. temperature most seeds are unable to germinate. There are two V.zizanioides genotypes being used in south Asia negative effect of VGT on steep slopes, as an extra protection, vetiver hedges could be and severe shading can eliminate it in the long term by reducing its ability to compete Forestry, agroforestry, and living fences. A machine should uproot the mature stock 20-25cm (8-10) lower ground. Certain types appear to bear infertile seed and produce no spreading stolons or rhizomes, so they remain where they are planted. Thus, farmers and foresters will probably employ vetiver, whether they have any concern for erosion or not. Cut culms in 30-50mm (1-2) lengths, including 10-20mm (4-8) lower the nodes, and strip off the old leaf covers. 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. with conventional engineering structures, the efficiency of bio-engineering technology Vetiver planted at 2m VI provided shades The plant is used in dryland restoration to reduce soil erosiveness and is sometimes planted as a hedge. pavement and vetiver roots basically behave like living soil nails or dowels of two to ", Another reviewer wrote, "The prime reason for a lack of attention is the insidious nature of erosion. First Int. It is with this background in mind that we have assessed the experiences with vetiver worldwide and drawn the following conclusions: vetiver works, it is unique, and the method brings new advantages. single clone of V.zizanioides. We currently have no information for VETIVER overview. com.). For example in one instance A third is that vetiver (at least in many places) does need some care during the period immediately after planting. This water is excellent for treating urinary problems that can arise throughout the summer. Rehabilitation trials conducted by De Beers on both tailing dumps and slimes dams, at Vetiver Network Newsletter N0.19, June 1998. Put plants into 20 litre plastic bag, and tie it closed. All in all, therefore, vetiver is a solution that should be acceptable to most users. concrete were used to protect road embankment, but due to their high cost, only a very of existing cultivars in Australia and rigorously tested for its sterility. self sustainable growth on kimberlite spoils. in China when the Guiyang variety is used. Appropriately laid However, vetiver is not like a lawn or pasture species; it is a big, coarse, very tough bunch grass and it grows to about 1 m wide at the base with a clustered mass of dense stems. The stench created by the growth of algae and microbes in such coolers is also countered by vetiver root cushioning. control, environmental and infrastructure protection, and mine rehabilitation. Electronic Code of Federal Regulations. Malaysia by Hengchaovanich. Fifteen years of bio-engineering in the wet tropics from A. Kingett Mitchell and Associates Ltd (1995). Stabilisation and rehabilitation of a highly erodible acid sulfate soil on the coastal Qld Department of Main Roads, ARC/90/4. Comparative effectiveness of. For example, as all vetiver research conducted in Australia have been based on Monto The root is used to make medicine. associated with conventional engineering measures such as concrete and rock structures. Sumanochitrapan S., and Topangteam S. (1996). He has won Washington, DC: The National Academies Press. Okay! its popularity has increased in the last decades. Vetiver Grass Technology (VGT) involves the correct application of this tropical Queensland. Efficient, economic, and a quick way to prepare the planting material. Ushira - Vetiver is a coolant, but yet aids in digestion. The mean design tensile strength is about 75 Mpa (equivalent Click the link and enter your email address and we'll add you to our list! The procedure is frequently used by the international horticultural industry. with particular reference to engineering applications. The objective of this work was to evaluate the root system of Vetiver grass through different methodologies. Acid Sulfate Soils, Coffs Harbour, The implication is that VGT, if based on this clone, would be Vetivers scientific name is Chrysopogon zizanioides, and it belongs to the Poaceae family (grass family). Australia, Truong, P, Baker, D E, and Christiansen, I (1995). Although vetiver grass (Vetiveria zizanioides) has been used for When at least three new tillers (shoots) appear, the plantlets are ready to be planted. The implications are that, once the Some women use vetiver to induce an abortion or to start their periods. Nowhere in the world have I seen real concern for erosion nor public support for erosion-control programs. soil movement, resulting in very little erosion in fallow strips and a young sorghum crop its effectiveness in erosion control in Fiji. 4 000 km of highway were built in Fujian. and forming a very effective filter (Truong et al, 1995). Regional Vetiver conference, Can Tho University, Can Tho, Vietnam. It does not appear to compete seriously with neighboring crop plants for the moisture or nutrients in the soil. Education, training, monitoring, and evaluation (of both farmers and administrators). 3.2.4 Advantages of using bare root slips and culm slips. Title 21. municipality ( Xu, pers.com.). Vetiver grass through out Zimbabwe - Protection of rural roads. Proc. Names of Vetiver Grass in various languages of the world are also given. some grasses, e.g. The plant can withstand a lot of water. 0.6m, forming a living barrier which slows and spreads runoff water. Saraji Mine. Landfill sites and industrial wastes are usually contaminated with heavy metals such as lands caused by civil construction. J Agric.Food Chem 10-20-2004;52(21):6578-6584. characteristics in situations where a pioneer plant is needed to provide the initial stabilisation, improve the micro environment for the introduction, either voluntarily or DNA fingerprints (RAPDs) of the pantropical grass. The use of vegetation as a bio-engineering First International Vetiver Conf., Thailand, 4-8 February 1996. While surface erosion often leads to rill and gully erosion, structural Fujian (Dalton et al, 1996) (Fig.1). www.ars-grin.gov/duke (Accessed 3 November 1999). It identified the following reasons: Erosion prevention is seen as an end in itself. Workshop, Darwin, Australia. floods in the area in the last two years. the visual degradation of the environment caused by infrastructure development and partly In this regard, VGT has done the job it was designed to do and no longer needed when the Although the protocols of individual laboratories differ, tissue culture involves a very small bit of tissue, growing it in a special medium under aseptic conditions, and planting the resulting small plantlets in appropriate media until they fully developed into small plants. This A hedge like this across a slope slows the runoff so that its erosive force is dissipated. Conf. three metre depth commonly use in hard approach slope stabilisation work. This requires nurseries capable of producing large quantities of high quality, low cost plant materials. 3.0 MAIN APPLICATIONS OF VGT IN CIVIL CONSTRUCTION. Xie (1997) found that for Fujian province the cost of VGT is only 10% moisture competition in crops in Australia (Dalton, 1997) indicated that under low Vetiver is sensitive to shade and this will slow growth, especially in young plants. Chrysopogon zizanioides, commonly known as vetiver and khus, is a perennial bunchgrass of the family Poaceae.. Vetiver is most closely related to Sorghum but shares many morphological characteristics with other fragrant grasses, such as lemongrass (Cymbopogon citratus), citronella (Cymbopogon nardus, C. winterianus), and palmarosa (Cymbopogon martinii). A new approach to erosion and sediment control. beneficial insects, as they are the all-important prey enemy of garden, agriculture and Namwongprom K., and Nanakorn M. (1992). Enough description. At this site, it is normal to plant sugarcane right up to the vetiver hedges. After two years, the site was completely revegetated with vetiver and local species The thatch can then be placed behind the newly planted slips to provide an . during the last four wet seasons with flow velocity up to 3.5m/sec. to the reduction of runoff water and erosion rate. Third Annual Conf. The Conservation and Rehabilitation of African Lands: An International Scheme. 8.0 PLANTING MATERIALS AND THEIR SUITABILITY. For developing nations, soil erosion is among the most chronic environmental and economic burdens. partly to the soft vegetative approach and partly due to the more knowledge 3.3 Erosion Control and Sediment Trapping. It is widely used in treating fever, dysuria, burning sensation, fatigue syndrome, skin disorders etc. lower planting costs as they are planted in 1m length and easier to plant especially on 7.0 SOME OTHER APPLICATIONS OF VGT IN THE REGION, VGT is highly successful in the rehabilitation of old quarries where Uses, Benefits, Cures, Side Effects, Nutrients in Vetiver Grass. Khus syrup is a popular cold drink in South Asia throughout the summer. Research on Methodologies for Selection, Propagation and Cultivation Techniques of Vetiver Grass and its Application in Thailand. The exclusive use of only sterile vetiver cultivars (C. zizanioides) will prevent weedy vetiver from becoming established in a new environment. cropping layout, vetiver hedges were successful in reducing flood velocity and limiting indicated the local environment could benefit from the introduction of vetiver. Resources, Brisbane, Australia. The Rural Road Erosion Control Program, Subscribe to our NEWSLETTER for daily update on Medicinal plants and their health benefits. Network. characteristics already mentioned. One is that in certain locations the farms are laid out as narrow strips going up and down the slopes. MedicalPlantsNews.com website services, content, and products are for informational purposes only. To the causal observer, it may seem implausible that a hedge of grass only one plant wide could block the movement of soil under torrential tropical rainfall. Publication No. However To increase the establishment rate under hostile conditions, when the plantlets produced by the Upper methods are mature enough or bare root slips are ready, they can be prepared for planting out by: Plantlets and bare root slips are planted in small pots or small plastic bags containing half soil and half potting mix and maintained in the containers for three to six weeks, depending on the temperature. Truong, P, Gordon, I and Baker, D (1996). later. In addition, few farmers are aware of just how much soil they are losing and may have no interest in any erosion-control process. Baker, 1996). Planting strips are a modified form of polybags. thus lowering pore water pressure and increasing water infiltration in that zone leading intensive watering during hot and dry periods and therefore not recommended for 3.1.1 Tensile strength and shear strength of vetiver roots. First International Vetiver Conference (ICV-1), Chiang Rai, Thailand, 4-8 February 1996. p. 61, ORDPB, Bangkok. Photo 1: Upper: Machine planting; lower: manual planting. purposes: Vetiveria zizanioides L. and V. nigritana. Authors Paul Truong, Tran Tan Van, and Elise Pinners. Proceedings. It is minimally dependent on public agencies or neighborly cooperation. As mentioned above unknown plant, possesses some unique features of both grasses and trees by having Proc. Both of these are likely (even certain) to raise the yields of crops and trees on hillsides. VGT was also selected as the first The four common ways to propagate vetiver are: 3.1 Splitting mature plants to produce bare root slips. Thus, it is not clear which methods farmers might be willing to adopt. Photo 11: In the north, in Bac Ninh (left) and Bac Giang (right). This result was all the more remarkable because the hedge was young and less than 15 cm thick. barriers from scouring and erosion by high velocity flows. & Water Management for Urban Development. This is partly due to the low costs of bio-engineering techniques, Vetiver, therefore, might help. Truong, P and Baker, D (1996). A wild ecotype of vetiver grass originated in southern China is fertile, but . It could be a boon to dozens of nations whose waterways are now filling with silt or suffering from seasonal cycles of flood and drought. It is not known how vetiver might work as a medicine. Share a link to this book page on your preferred social network or via email. Although roadside stabilisation with vetiver is only limited to the ester compounds through thermal or hydrolytic effects are the principal disadvantages of this extraction method [8]. Vetiver isn't the only erosion-control technique, of course. Research in soil The real causes of land misusesuch as the land tenure systemare never analyzed. Successful examples of application of VGT for slope stability One rainstorm can remove a millimeter of soil from one hectare. In Australia, four sooner then other planting materials. Low cost micro-propagation of vetiver grass Proc. Recommended for harsh and hostile conditions. Photo 10: In the centre south, in Quang Ngai (left) and Binh Phuoc (right). These materials require most intensive watering during hot and dry periods and therefore not . Creighton, 1994). Secondly, as with Splitting tillers from a mother clump requires care, so that each slip includes at least two to three tillers (shoots) and a part of the crown. A vetiver hedge can accumulate an amazing amount of soil. mid 1998, this Author noted that while the crop of chilly and associated weeds were eaten It is (as mentioned) an especially important adjunct to contour cultivation. trials are also being conducted on the Blackwater-Gregory line. Vetiver Grass Technology as a bio-engineering tool for Bare roots plantlets are 4-5 weeks old plantlets which were raised in sand beds and VGT in the stabilisation of some of the major highways in Malaysia such as the Kuala acid sulfate soils. In Zimbabwe, VGT has been extensively used for the maintenance of candidate for slope stabilisation than other plants. Field trials using hydraulic characteristics determined by the above Although clay loam is acceptable, heavy clay is not. So, now lets move deep into the topic. the hard conventional engineering structures which have been the concern over Wide range of soil pH (3.0 to 10.5) (Truong et al, 1996).
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