An assessment of urban and industrial However it must be emphasised that to provide an effective support for It should be stressed that VGT is a new technology. This information may not fit your specific health circumstances. Master of Engineering Thesis, University of A machine should uproot the mature stock 20-25cm (8-10) lower ground. First International Vetiver Conf., Thailand, 4-8 February 1996. Dalton, P A, Smith, R J and Truong, P N V (1996). should not be compared with that of hydromulching either. Land Management. bio-engineering technique for revegetation and slope stabilisation of highways and rivers affected by either pests or diseases. Select old culms, that have more mature buds and more nodes than young ones. Truong, P N. (1998). partly to the soft vegetative approach and partly due to the more knowledge ", Another reviewer wrote, "The prime reason for a lack of attention is the insidious nature of erosion. on Agric., 29 Jan-1 Feb 1992 (in Thailand). outside the culverts where it can be easily cleaned if required. stronger than that of many hardwood species which have been proven positive for root Be sure to follow relevant directions on product labels and consult your, Smart Grocery Shopping When You Have Diabetes, Surprising Things You Didn't Know About Dogs and Cats, Mediterranean, Low-Fat Diets Are Best for Heart Problems, Least Amount of Exercise You Need to Stay Healthy, Nerve 'Pulse' Therapy May Help Ease Sciatica, New Book: Take Control of Your Heart Disease Risk, MINOCA: The Heart Attack You Didnt See Coming, Health News and Information, Delivered to Your Inbox, The Role Gut Bacteria Plays on the Overall Body. It is C4 plant and can grow well in marginal land. Each method has its own advantages and disadvantages. 1996). Faster establishment and growth after planting. Based on the above, it is clear that the advantages of using the VGT as an bio-engineering tool outweigh its disadvantages particularly when the vetiver plant is used as a pioneer species. technique and recently a bio-engineering tool, the application of VGT requires the It is used to treat acne and sores because of its antibacterial characteristics. Electronic Code of Federal Regulations. fast growth and the very extensive root system of the vetiver plants. single clone of V.zizanioides. However, its place in the mix of methods will be determined over the coming years by the experiences under the harsh realities of field practice. the sections planted with the Lomandra and native vetiver collapsed while the Monto As these old sites are often adjacent to residential and themselves naturally in erosion-control activitiessomething that national planners have long dreamed of. Limited on-site storage time. SPATIAL VARIABILITY OF SOIL UNDER VETIVER GRASS STRIPS, Techniques of Vetiver Propagation With Special Reference to Thailand (including images), Vetiver: From Nursery to the Protection of Infrastructures, VETIVER PROPAGATION Nurseries and Large Scale Propagation. Stiff and erect stems which can stand up to relatively deep water flow (0.6-0.8m). used to stabilise and rehabilitate a highly erodible acid sulfate soil on the coastal (Dalton et al, 1996) (Fig.1). profusely grown, deep penetrating root system that can offer both erosion prevention and REGION. 1998/2. As mentioned earlier, vetiver grass has to be established vegetatively As a soil conservation 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. weakness will cause mass movement or land slip. Piers Blaikie,* for instance, claims that governments can create the right policy environment for attacking the causes of soil erosion by stimulating such actions as: Research (notably on specific techniques); Legislation (for example, banning very damaging practices); Supporting extension and facilitating credit (and tying both to the positive encouragement of soil-conserving crops); Rural development (for instance, strengthening local institutions); Improving administrative structures (so that bureaucratic decisions are based less on fiat and more on experience); Land tenure reform (so that farmers have a vested interest in erosion control); Adjusting prices for farm products and inputs (especially eliminating those that subsidize unsound practices); and. Nevertheless, vetiver is not a panacea; uncertainties do exist; and there are, of course, other erosion-control techniques. In such extreme situations, the hedges can protect the land and trees may perhaps be grown, but farming would likely be impossible. This water is excellent for treating urinary problems that can arise throughout the summer. Most interestingly among these cultivars are: Monto (Australia), Sunshine 4.2.1 Advantages and disadvantages of polybags and planting strips. water. Another is due to the sad fact that certain farmers feel little for the stewardship of their land. Land disturbance by construction activities has resulted in soil Vetiver grew vigorously on kimberlite, Changes can be made. Failures of VGT in most cases can be attributed to bad applications 2005 - 2023 WebMD LLC, an Internet Brands company. that vetiver can rehabilitate the highly erodible slopes and drainage lines and also very bio-engineering tool outweigh its disadvantages particularly when the vetiver plant is Flood erosion control on the floodplain. Sign up for email notifications and we'll let you know about new publications in your areas of interest when they're released. . One rainstorm can remove a millimeter of soil from one hectare. batter stabilisation, erosion, sediment and runoff control program for Queensland Rail. For example, as all vetiver research conducted in Australia have been based on Monto compare the effectiveness of an Australian native vetiver (Vetiveria filipes), Lomandra supported by the German aid agency KfW, currently has 20 million vetiver plants at 79 Although vetiver grass (Vetiveria zizanioides) has been used for Stoll, J (1998). 100 years and it has been widely used for soil and water conservation purposes for more Photo 9: In the south, left: Can Tho University; right: An Giang province. This increase in soil moisture could be acerbated when the vetiver was 3.3 Bud multiplication or micro propagation. Potable water prepared with this also has many health benefits. ester compounds through thermal or hydrolytic effects are the principal disadvantages of this extraction method [8]. Small volume results in lower transportation cost. Photo 8: Planting strips ( left) in containers and removed from containers (middle), and ready to be planted (right). nurseries and 431 vetiver fields at maintenance camps throughout the country and aiming at or use these buttons to go back to the previous chapter or skip to the next one. More mature plants welcome flood irrigation. Vetiver grass hedges for erosion As a consequence, the vetiver-grass-based phytoremediation is a reliable . Uses, Benefits, Cures, Side Effects, Nutrients in Vetiver Grass. occurs regularly, have been effectively protected by VGT. Cairns August, 1998. Photo 6: Plant with manure, in a good nursery bed. associated with the construction of the massive Three Gorge Dam in the Chongqing The use of vegetation as a bio-engineering In practice, all vetiver seedlings are propagated via ramets or tillers, which cannot meet the market demand and would also destroy the original habitat. Vetiver Grass System for Environmental Protection. been used for essential oil production for centuries and for other purposes around the stabilisation. Australia pp 196-8. Moreover, because of its dense innate strength and vigour enable it to penetrate through difficult soil, hard 3.1Splitting mature plants to produce bare root slips, 3.3Bud multiplication or micro propagation. Abstracts. Click the link and enter your email address and we'll add you to our list! This information is abstracted from Vetiver Systems Application A Technical Reference Manual. Certainly there is some truth in these assertions, but the mind-sets of today need not be those of tomorrow. The implication is that VGT, if based on this clone, would be Third Annual Conf. All of these procedures have merit, and most of them are better known at present than the vetiver system. longifolia and Monto vetiver in batter stabilisation. The mean design tensile strength is about 75 Mpa (equivalent A fifth is that strips of vetiver across the land may sometimes be a nuisance. Appendix A: Great Challenges, Great Opportunities, Board on Science and Technology for International Development (BOSTID). 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. rather than the grass itself or the technology recommended. Its Truong, P.N. 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. Vetiver Propagation: Nurseries and Large Scale Propagation. It is not known how vetiver might work as a medicine. Tolerance of vetiver grass to some adverse vetiver, all the Australian results presented in this paper can be applied with confidence In Zimbabwe, VGT has been extensively used for the maintenance of The root is used to make medicine. MedicalPlantsNews.com website services, content, and products are for informational purposes only. It is faster growing and imparts more reinforcement making it a better The plant can withstand a lot of water. Vulnerable to drying and extreme temperatures. application in engineering designs. The four common ways to propagate vetiver are: 3.1 Splitting mature plants to produce bare root slips. Before donning these hats in the midday sun, a little water is sprinkled on them to protect them from sunstroke. Fijians have been using vetiver grass as a soil conservation measure since the . However, this is not a total disadvantage as the shrub has high-density wood that makes a good charcoal. Water Hyacinth solution contains many hormones and growth regulators, including gibberellic acid and many Indol-Acetic compounds (IAA). In the last locust plague in southern and central Madagascar in often not well consolidated, so rill and gully erosion often occurs on even well covered To every thoughtful observer, it is obvious that government policies, farming practices, excessive pressures on the land and its vegetationnot to mention foolishness, ignorance, and even a malevolent self-interest that sometimes verges on "eco-vandalism"all lead to soil erosion. Dafforn,1997)., results of the Vetiver Identification Program, by DNA typing have shown conditions will have beneficial effects on slope stability. Vetiver, a very fast growing grass and until very recently a relatively Physiologia Plantarum 15: 473-497. Vetiver grass through out Zimbabwe - Protection of rural roads. unique grass in erosion and sediment control in agricultural lands, land stabilisation in Bud multiplication or in vitro micro propagation for large scale propagation. Washington, DC: The National Academies Press. Vetiver grass is a resilient species of grass with a deep root system that helps to stabilize the soil in which it grows. privately built Subic Bay road also used VGT for erosion and sediment control. Regional Waterboard Techn. civil construction, mining rehabilitation and flood mitigation. Research showed that due to its unique characteristics, vetiver grass can be useful in phytoremediation. Decision-and policy-makers are even less concerned; few of them ever get excited about soil loss. Farmers are only moderately concerned about soil loss and will list numerous higher priorities for improving their farms. enhancement and erosion control for highways, railways, stream banks and other (Hengchaovanich, 1998). If youre breastfeeding, its also better to avoid vetiver. As mentioned earlier (Adams and Proc. Availability of farm machinery: Basic farm machinery is needed to prepare nursery beds, control weeds, cut grass, and harvest vetiver. Synonyms: Andropogon muricatus Retz. material and the all-important appropriate design and correct planting techniques.. Dr. Paul Truong, Principal Soil Conservationist, Leader Bio-Engineering 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. 91-104. 30th Ann. Proc. Self-interest should drive them. moisture competition in crops in Australia (Dalton, 1997) indicated that under low Secondly, as with Hengchaovanich, D. (1999). stabilisation, improve the micro environment for the introduction, either voluntarily or The fragrant roots grow downward in the soil, reaching depths of almost 3 meters (10 feet). Vetiver for highway stabilisation in Jian Yang County: Demonstration This practice has been very successfully used in The National Academies of Sciences, Engineering, and Medicine, Vetiver Grass: A Thin Green Line Against Erosion. technology it has to be learnt and applied appropriately for best results. the world for soil and water conservation purposes because of its unique and desirable Indeed, perhaps the most important feature of the vetiver method is its compatibility with all the other techniques. Forestry, agroforestry, and living fences. In global terms, erosion is continually increasing. but trees are slow and often difficult to establish on such hostile environment. Keep in mind that natural products are not always necessarily safe and dosages can be important. Direct Revegetation of Coal Tailings at BHP. High level of tolerance to soil salinity, sodicity and acid sulfate (Truong and Baker, the genetic uniformity of the planting material. Charanasri U., Sumanochitrapan S., and Topangteam S. (1996). International Pte Ltd. Vetiver grass: Nursery development, field planting techniques, and hedge management. plain where actual soil pH is around 3.5 and oxidised pH is as low as 2.8 (Truong and The thatch can then be placed behind the newly planted slips to provide an . It is native to Africa but is now grown in many tropical countries. Clonal propagation of vetiver in vitro. . Technical Bulletin N0. The grass grows tall and forms large clumps like bamboo. Subscribe to our NEWSLETTER for daily update on Medicinal plants and their health benefits. There isnt enough credible evidence to establish if vetiver is safe in doses found in medicine or what the potential side effects are. This book assesses vetiver's promise and limitations and identifies places where this grass can be deployed without undue environmental risk. Vetiver is a C4 plant and likes plenty of sun. Southern Queensland, Toowoomba, Queensland, Australia. It is not difficult to remove if no longer wanted. waterways to even out the flow of runoff throughout the year. candidate for slope stabilisation than other plants. This is especially true in marginal lands where a little fertilizer or a little water may be needed to help the young plants through their establishment phase. For faster growth the slips should be kept in wet and sunny conditions until planting out (Photo 2). This Remove Water Hyacinth plants from lakes or canals. It is a new and different approach to erosion control that seems to overcome many of the causes of failure. This is the final outcome of several steep slope New York, NY:Dorland Kindersley Publ., Inc., 1995. others. northern regions of Thailand, its effectiveness has been varied as the quality of planting At this time there is not enough scientific information to determine an appropriate range of doses for vetiver. estimated that saving of A$100 000 would be made when VGT was incorporated in the design