Apparently, the vetiver system also provides even more benefits, the most important being the fact that the stout lines of vertical thatch hold back moisture long enough to give it a chance to soak in. Stiffgrass barrier with vetiver (N. Vietmeyer). 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. There is a school of thought that says that technology for controlling erosion is not the missing ingredient at all. velocity and its erosive power. Another is due to the sad fact that certain farmers feel little for the stewardship of their land. acid sulfate soils. It is aready grown in the south of the UK with some success, but has not been utilised specifically for soil erosion control. Vetiver is a tropical grass and is able to withstand temperatures to -15 o C, but it is unlikely to grow in the UK as quickly or robustly as it does in Tropical and Mediterranean regions. Vetiver is a plant. Although clay loam is acceptable, heavy clay is not. This book assesses vetiver's promise and limitations and identifies places where this grass can be deployed without undue environmental risk. Vetiver grass is an "ecological-climax" species[10] with a deep dense spongy root system that binds soils together. municipality ( Xu, pers.com.). 2.0 SOME SPECIAL CHARACTERISTICS OF VETIVER GRASS. 1995) and highly acidic (pH 3.5) tailings of a gold mine. The other advantages are Parameters obtained from recent This book is a modification of the extension worker's handbook, first published (1987) in India as "Vetiver Grass: A Method of Vegetative Soil and Moisture Conservation" by the In such extreme situations, the hedges can protect the land and trees may perhaps be grown, but farming would likely be impossible. It is not difficult to remove if no longer wanted. by DNA typing, conducted by Adams and Dafforn (1997) have shown that of the 60 samples When established as an alternative to strip Patron - H.R.H Princess Maha Chakri Sirindhorn of Thailand, Hand Book on Vetiver grass technology From Propagation to utilisation For Ethiopia, Propagation, Cultivation, and Management of Vetiver Grass Conducted in China in the l950s, Vetiver Related Social Media Platforms and Affiliates, Splitting mature plants to produce bare root slips, The Vetiver System Propagation and Planting Photo essay, The Vetiver System Propagation and Planting (with captions), Experimenting and developing techniques to speed up vetiver multiplication in nurseries. Tube stocks are tubed or potted plants (4-5 week old) which can be kept in nursery and 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 Grass Technology as a bio-engineering tool for In India, mats fashioned from vetiver roots and bound with ropes or cords are used to cool rooms in a house during the summer. We currently have no information for VETIVER overview. Considering the vastness of the investments in such civil works throughout the world, vetiver deserves much consideration here. Vetiver Grass: A Thin Green Line Against Erosion. successfully used to stabilise a major drain in north Queensland against a series of major Each method has its own advantages and disadvantages. This outlook is found worldwide, but it is perhaps most understandable among subsistence farmers, to whom staying alive today is inestimably more important than anything that might happen tomorrow. cultivar used for essential oil production and this is the genotype that being used around Vetiver root fiber is also used in building materials. highway network is expanding rapidly, for example during the 1992-1996, more than. and at the same time makes it very difficult to be dislodged and extremely tolerant to For steep slope stabilisation, the saving is in the order of 90 to 85% in China (Xie, 1997 erosion increases from two to 40 000 times the pre construction rates (Goldman et al, Lumpur- Karak, North South and Cameron Highland highways. drought. submitted from 29 countries outside South Asia, 53 (88%) were a single clone of V.zizanioides. Do you enjoy reading reports from the Academies online for free? Therapeutic Research Faculty 2020. Truong, P N. (1998). Napier grass is one of the important perennial tropical forage crop belong to family Poaceae. Tissue culture of vetiver grass. Washington, DC: The National Academies Press. world for over a century. Currently VGT is being used in several road construction projects by long earthen structure built to cool wastewater on the bed of a flood prone river in can force farmers to overexploit their land in their attempts to grow more. Photo 8: Planting strips ( left) in containers and removed from containers (middle), and ready to be planted (right). Radloff, B., Walsh, K., Melzer, A. Table 1: Adaptability Range of Vetiver Grass in Australia and Other Countries. CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. 1997, the Highway Bureau of Fujian Province has recently issued an official recommendation Because of the smaller gaps between plants these strips provide protection It is (as mentioned) an especially important adjunct to contour cultivation. will form thick hedges and with their stiff stems these hedges can stand up to at least New shoots emerge from the base thus withstanding traffic and heavy grazing pressure. It is minimally dependent on public agencies or neighborly cooperation. Dip in clay mud or manure slurry, and plant in a good bed. Copyright 2023 MedicalPlantsNews | Powered by MFF. Information from this source is evidence-based and objective, and without commercial influence. For example, as all vetiver research conducted in Australia have been based on Monto Vetiver essential oil is a common element in western fragrances, appearing in 90 percent of them. doi: 10.17226/2077. com.). later. L Vn B, V Thanh Tn, Nguyn Th T Uyn.(2006). Research in soil Electronic Code of Federal Regulations. www.ars-grin.gov/duke (Accessed 3 November 1999). later found out that from the engineers who specified the vetiver, the nursery which Thirdly, VGTs maintenance costs are low in the long term. Vetiver is a C4 plant and likes plenty of sun. Bare root slips are freshly subdivided slips from large clumps of vetiver grass. It is cheap and usually easy to establish, and the hedges are easy to maintain. When slopes approach the vertical, the hedges must be placed so close together that little or no land is left for farming. outside the culverts where it can be easily cleaned if required. It has been transported globally and used by man in various ways for over 5,000 years, because of its wide range of uses. and Extension. Network. to all highway departments within the province to adopt VGT as the main method of highway The results are excellent at some sites and bad failures occurred at strength of 75 Mpa or one-sixth of ultimate strength of mild steel. Insect and pest repellents are found in vetiver roots. Part 182 -- Substances Generally Recognized As Safe. reinforcement in steep slopes. Planting strips are a modified form of polybags. improves with time as the vegetative cover matures. suitably designed. Vulnerable to drying and extreme temperatures. (1997). application in Kwa Zulu province in the stabilisation of both cut and fill batters, roads, This means that 15 tons of soil have gone, but the loss of only a millimeter is not noticeable!". Truong, P and Baker, D (1996). Pacific Rim Vetiver Network. The consequences for a nursing baby are unknown. the hard conventional engineering structures which have been the concern over Vetiver System Technology, which is based on Vetiver grass (Chrysopogon zizanioides L. Roberty) has been successfully used as a phytoremediation tool to remediate both polluted water (municipal . affected by either pests or diseases. batter stabilisation, erosion, sediment and runoff control program for Queensland Rail. In South Africa, vetiver has not been used in major highways, but its Use only the top part of the mature crown. This increase in soil moisture could be acerbated when the vetiver was All in all, therefore, vetiver is a solution that should be acceptable to most users. Increased maintenance cost following delivery, if not planted within a week. 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. Thus, it is not clear which methods farmers might be willing to adopt. Office of the Royal When planted upstream from the Workshop on Potential Application of the VS in the Arabian Gulf Region, Kuwait City, March 2006. Mature vetiver, however, thrives under waterlogged conditions. This structure has been fully protected from several flood flows Erosion control: vetiver grass is widely used throughout the tropics for planting on the contour as an anti-erosion measure. temperature most seeds are unable to germinate. In addition properly laid out hedges can be designed to On the other hand early results of research conducted at Guangxi University, China, based on the relative costs of the two technologies locally. Mechanical planter: A modified seedling planter or mechanical transplanter can plant large numbers of vetiver slips in the nursery. Truong, P, Gordon, I and Baker, D (1996). The second disadvantage of VGT, or rather its potential disadvantage at this stage, is Failures of VGT in most cases can be attributed to bad applications So, now lets move deep into the topic. partly to the soft vegetative approach and partly due to the more knowledge 6 months) Labour intensive to plant, maintain until established and to obtain planting material (future work is expected to overcome these problems). International Pte Ltd. supported by the German aid agency KfW, currently has 20 million vetiver plants at 79 into vetiver root strength in the last 6 years, Hengchaovanich (3) has successfully used out, the vetiver hedgerow planted for erosion control was not eaten, even its young To get rid of sun rashes, fresh Vetiver roots are put to daily bathing water. The tensile strength of vetiver roots varies between 40-180 Mpa for the range of root Clonal propagation of vetiver in vitro. To avoid damaging the plant crown use a single blade mouldboard plough or a disc plough with special adjustment. technique and recently a bio-engineering tool, the application of VGT requires the bio-engineering techniques, partly to the soft vegetative approach instead of Truong, P N. (1997). surface erosion and deep rooted plants such as trees and shrubs can provide the structural genotype is identified, all our R, D and A (Application) can be shared around the world. Report on the potential weed problem of vetiver grass Copyright 2023 National Academy of Sciences. The cane fields here are burned every year, obviously without any long-term effect on the vetiver. Land Management. intensive watering during establishment phase. 3.1Splitting mature plants to produce bare root slips, 3.3Bud multiplication or micro propagation. and low cost bio-engineering tool for the stabilisation and rehabilitation of disturbed The essential oils extracted from vetiver grass contain more than 100 constituents, hence the need for the separation of these constituents into the most valuable components. out these hedges can act as very effective diversion structures spreading and diverting However, in the very high rainfall areas, to reduce this potentially Recommended for good nursery sites with easy access to irrigation. It is not known how vetiver might work as a medicine. Physiologia Plantarum 15: 473-497. 3.3 Bud multiplication or micro propagation. OTHER NAME(S): Anatherum zizanioides, Andropogon odoratus, Brazil. In practice, all vetiver seedlings are propagated via ramets or tillers, which cannot meet the market demand and would also destroy the original habitat. material and the all-important appropriate design and correct planting techniques.. Dr. Paul Truong, Principal Soil Conservationist, Leader Bio-Engineering Truong, P N and Mason, F (1997). It does not require careful layouts or high-quality control. 4.0 ADVANTAGES AND DISADVANTAGES OF THE VGT. One is that in certain locations the farms are laid out as narrow strips going up and down the slopes. Proc. bio-engineering technique for revegetation and slope stabilisation of highways and rivers Extremely deep and massive finely structured root system, capable of reaching down to stabilise the lose surface first so other species can colonise the areas between hedges Field trials using hydraulic characteristics determined by the above More details are found in Truong (2006). stabilisation. northern regions of Thailand, its effectiveness has been varied as the quality of planting cropped flood plain of the Darling Downs. some grasses, e.g. the sterile or very low fertility south Indian genotype. There isnt enough credible information to tell if vetiver is safe or what the potential side effects are if its used on the skin. Discard the solid parts and keep only the solution. P. Blaikie, 1985, The Political Economy of Soil Erosion in Developing Countries, Longman, Harlow, UK. Vetiver is not a panacea; it cannot solve all the problems. Large numbers can be mechanically planted in large areas. Vetiver for highway stabilisation in Jian Yang County: Demonstration In Zimbabwe, VGT has been extensively used for the maintenance of Some difficulties, however, can already be foreseen. glyphosate or uprooting and drying out. 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. by root subdivision (slip). The plant is used in dryland restoration to reduce soil erosiveness and is sometimes planted as a hedge. Australia, Truong, P, Baker, D E, and Christiansen, I (1995). Asia, Oceania and Africa. 30th Ann. Thus, farmers and foresters will probably employ vetiver, whether they have any concern for erosion or not. As can be seen here, the height of the plants shows no obvious drop-off (edge effect) such as would be caused if the vetiver roots were robbing the cane of moisture or soil nutrients. VGT has been to high levels of heavy metal provide an unique bio-engineering tool for land application in soil and water conservation in farmlands into the fields of flood erosion enhancement and erosion control for highways, railways, stream banks and other The 53 samples tested came from North and South America, Asia, Oceania Before recommending any technique, researchers may wish to conduct careful experiments, with appropriate replications and controls, but erosion waits for no one. engineering structures, the two most important points are good quality of the planting It identified the following reasons: Erosion prevention is seen as an end in itself. DNA fingerprints (RAPDs) of the pantropical grass. Laying or standing, cut pieces of culms under mist or on moist sand will cause roots or shoots to develop rapidly at each node. Successful examples of application of VGT for slope stability the main disadvantage is their slightly higher costs. of a 60m long box culvert section on the highway in southern Queensland. and extreme temperature from -14. diameter between 0.2-2.2mm. Today, many countries use vetiver grass for soil conservation, stabiliz-ing unstable river slopes, managing watersheds, repairing dams, mines, contaminated lands, salt marshes [24], and treating unconventional water [25]. The FAO report mentioned above recommends establishing advisory commissions, encouraging the work of NGOs, creating a proper legal framework for action, assessing training and manpower needs, identifying research priorities, and developing long-term programs for erosion control. tolerance to various chemicals for land rehabilitation etc. tests showed that vetiver hedges were successful in reducing flood velocity and limiting Preparation requires a longer period to prepare, four to five weeks or longer. Research showed that due to its unique characteristics, vetiver grass can be useful in phytoremediation. Xie (1997) found that for Fujian province the cost of VGT is only 10% The main advantages of the strips are the vetiver plants were established close together Thus, efforts to establish vetiver trials and even large-scale field projects should proceed without delay. Lassi, milkshakes, yogurt, and ice cream are all flavored with it. negative effect of VGT on steep slopes, as an extra protection, vetiver hedges could be along the Famy - Infanta road and the Nueva Vizcaya - Benguet road. candidate for slope stabilisation than other plants. subtropical Australia. This practice saves labour when planting on difficult sites such as steep slopes, and enjoys a high survival rate since the roots remain together.
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