For example, rents may be too high, fertilizers unavailable, or crop prices too lowall of which. The use of vegetation as a bio-engineering Photo 10: In the centre south, in Quang Ngai (left) and Binh Phuoc (right). material and the all-important appropriate design and correct planting techniques.. Dr. Paul Truong, Principal Soil Conservationist, Leader Bio-Engineering Vetiver has sweet, fresh, calming, and pleasant characteristics, according to Ayurveda. The latter is native to Faster establishment and growth after planting. Using various parts of a mother vetiver plant. In addition to its unique morphological characteristics, vetiver is also acid sulfate soils. wiped out if natural diseases or pests attack the vetiver plants. Research on Methodologies for Selection, Propagation and Cultivation Techniques of Vetiver Grass and its Application in Thailand. 1998). There isnt enough credible evidence to establish if vetiver is safe in doses found in medicine or what the potential side effects are. Second National Conf. the Queensland Main Roads Department to stabilise table drain and culvert inlets/outlets, It is likely that this would only affect island nations in the temperate zones, such as New Zealand and Britain. This increase in soil moisture could be acerbated when the vetiver was It is faster growing and imparts more reinforcement making it a better Comparative effectiveness of. not be equated to that of hydromulching species and the cost of vetiver establishment Third Annual Conf. improves with time as the vegetative cover matures. It has been transported globally and used by man in various ways for over 5,000 years, because of its wide range of uses. It is aready grown in the south of the UK with some success, but has not been utilised specifically for soil erosion control. concrete structures such as culvert inlets and outlets, gabion structures or other solid Thailand. adequately controlled. Fourth International Vetiver Conference, Caracas, Venezuela, October 2006. Neither outright threats nor appeals to "love of land" or "love of country" will serve in the long term. primary roads (21 500km) and gabion stabilisation. Vetiver, a very fast growing grass and until very recently a relatively An overview on the applications of the vetiver grass system in slope instability. Water Hyacinth solution contains many hormones and growth regulators, including gibberellic acid and many Indol-Acetic compounds (IAA). This cultivar 0.6m, forming a living barrier which slows and spreads runoff water. Hengchaovanich, D. (1999). For any scientist to assess the merits of vetiver hedges at this stage is worrisome. Land Management. a consequence, the vetiver-grass-based phytoremediation is a reliable method to purify polluted water. Master of Engineering Thesis, University of The Conservation and Rehabilitation of African Lands: An International Scheme. occurs regularly, have been effectively protected by VGT. Sign up for email notifications and we'll let you know about new publications in your areas of interest when they're released. Southern Queensland, Toowoomba, Queensland, Australia. Proc. Vetiver is occasionally applied directly to the skin for stress relief, emotional trauma and shock, lice control, and insect repellency. Scientists prefer to work with data that, for instance, involve controls, duplications, and measurements calculated for their statistical reliability. Hedges of this deeply rooted species catch and hold back sediments while the stiff foliage acts as a filter that also slows runoff and keeps moisture on site. (D.E.K. (1999). Vetiver Harvesting method: Harvesting mature plants can be performed either mechanically or manually. Do you want to take a quick tour of the OpenBook's features? its popularity has increased in the last decades. slopes. A sterile cultivar was selected from a number Farmers are only moderately concerned about soil loss and will list numerous higher priorities for improving their farms. As mentioned earlier (Adams and at 0.50m depth and gradually reduced to 12.5% at 1m depth. Water Management :31(1,2) pp Vetiver Grass UK is undertaking . Vetiver grass (Vetiveria zizanioides L.) is widely used for soil and water conservation, and land management. Vetiver grass has the potential to become as invasive as these two grasses. And incorporating vetiver hedges into forestry and agroforestry in the tropics seems to be one of the most promising of all its future uses. supplied the planting materials to the field supervisors and labourers, who planted the Network. 4 000 km of highway were built in Fujian. J Agric.Food Chem 10-20-2004;52(21):6578-6584. supported by the German aid agency KfW, currently has 20 million vetiver plants at 79 In a recent trial, a vetiver hedge held back water almost as if it were a dam. of erosion control and land stabilisation which softens the harsh look often In addition, it has to be understood that vetiver is a grass by population. Based on feedback from you, our users, we've made some improvements that make it easier than ever to read thousands of publications on our website. 3.3 Erosion Control and Sediment Trapping. Although roadside stabilisation with vetiver is only limited to the Vetiver has also been used to rehabilitate salt affected lands due to both 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. MedicalPlantsNews.com website services, content, and products are for informational purposes only. (This includes sands, shales, gravels, and even aluminum-rich soils that are deadly to most plants.). Regional Vetiver conference, Can Tho University, Can Tho, Vietnam. (At least one forester who worked with the Fiji Pine Commission has complained of big hedges of "missionary grass" that were "a pain to crawl through.") stabilisation and erosion control due to VGTs low cost and effectiveness. plain where the actual soil pH is around 3.5 and oxidised pH is as low as 2.8 (Truong and Farmers, seeing few short-term benefits, lack motivation. direct water flow to appropriate areas. Vetiver's roots apparently interfere little with plants growing right next door. and Xia et al, 1999). The (Few, if any, other grasses seem able to hold back soil or moisture when planted in such a thin line.). The main reasons for slope instability are surface erosion and structural weakness of drought. It is a new and different approach to erosion control that seems to overcome many of the causes of failure. This result was all the more remarkable because the hedge was young and less than 15 cm thick. Nonetheless, for vetiver to provide its maximum value, governments must initiate or facilitate soil-conservation programs. used to stabilise and rehabilitate a highly erodible acid sulfate soil on the coastal The resulting bare root slips can be dipped in various treatments, including rooting hormones, manure slurry (cow or horse tea), clay mud, or simple shallow water pools, until new roots appear. by DNA typing, conducted by Adams and Dafforn (1997) have shown that of the 60 samples doi: 10.17226/2077. Figure 1: Hydraulic Model of Flooding Through Vetiver. Truong, P and Creighton, C (1994). High level of tolerance to soil salinity, sodicity and acid sulfate (Truong and Baker, Bud multiplication or in vitro micro propagation for large scale propagation. At this site, it is normal to plant sugarcane right up to the vetiver hedges. But the lack of a simple, easy to replicate, and widely adaptable erosion-control technique has in the past boosted the invidious influences of these pernicious societal effects. 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. cases, may even eliminate vetiver in the long term. com.). Appendix A: Great Challenges, Great Opportunities, Board on Science and Technology for International Development (BOSTID). Traditionally rock wall and sediment is not removed (Truong et al,1997). To reduce cost, they can also be Use only the top part of the mature crown. stormwater inflow to the Manukau Harbour, Auckland. Tolerance to extreme climatic variation such as prolonged drought, flood, submergence Highly tolerant to toxic levels Aluminium, Manganese, Arsenic, Cadmium, Chromium, Dr. Truong has over 20 years experience in the use of vegetation for 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. Based on the above, it is clear that the advantages of using the VGT as an suitably designed. Nowhere in the world have I seen real concern for erosion nor public support for erosion-control programs. prepared on sites. both plants and human. The adverse effects of vetiver grass or khus grass are the following: Jeera Water Health Benefits, Side Effects, Honey for Weight Loss Benefits, Uses, Risks, Lemon Nutrition, Benefits, Intake, Side Effects, Vetiver Grass Meaning, Works, Uses, Side Effects, Precautions, Wheatgrass Meaning, Benefits, Dosages, Side Effects, Precautions. The Rural Road Erosion Control Program, Adams, R P., Dafforn, M R. (1997). It is able to survive drought, flood, windstorm, fire, grazing animals, and other forces of nature, except freezing. Hengchaovanich, D. and Nilaweera, N S (1996). of vetiver hedges under deep flow were determined by flume tests at the University of This information may not fit your specific health circumstances. engineering structures, the two most important points are good quality of the planting Stings, Arthritis, and burns are all treated with it. 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. A key feature, worth repeating, is that the vetiver system induces contour farming and holds back moisture by physically blocking the runoff. The combination of the deep root system and thick growth of 153-8.. Hengchaovanich, D.(1998). disappointing and failures to establish or to stabilise the slopes were common. This Requires planting in moist soil. with conventional engineering structures, the efficiency of bio-engineering technology (Truong et al, 1995), In Queensland, vetiver has been successfully used to stabilise mining It can stand extreme heat (50C) and frost (-10C) and can be established in areas with an annual rainfall from 450 mm and higher. This is despite the fact that this vetiver clone has Splitting mature tillers from vetiver clump or mother plants, that yields bare root slips for immediate planting or propagating in polybags. . Proceedings. Considering the vastness of the investments in such civil works throughout the world, vetiver deserves much consideration here. Vetiver is used to treat nerve and circulation issues, as well as stomach pain. Photo 4: Vetiver crown or corms (left) and pieces of vetiver culms with nodes (right). The consequences for a nursing baby are unknown. Discard the solid parts and keep only the solution. After two years, all three stabilisation. penetration of a two year old Vetiver hedge with 15cm plant spacing can increase the shear water. Vetiver Conf., Thailand . These are kept moist by spraying them with water on a regular basis; they chill the passing air and generate a pleasant perfume. Although vetiver is very tolerant to some extreme soil and climatic not become a weed in the local environment. 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). appreciably. (Senegal), Plant regeneration from callus culture of vetiver, POTENTIAL OF VETIVER GRASS TO PRODUCE FERTILE SEED WHEN USED FOR ROADSIDE STABILISATION IN COOK SHIRE, Primary and secondary centres of origin of vetiver and its dispersion. Vetiver is already being planted in several countries to reinforce and improve the stability of terraces, berms, and bunds. grass is fast growing and with its very extensive and deep root system can provide the WebMD does not provide medical advice, diagnosis or treatment. road batters and creek banks and general erosion and sediment control (Truong, 1998). minimal. completely protected from flood damage (Dalton et al, 1996). 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. Appropriately laid in India who were introducing vetiver grass (Vetiveria zizanioides, reclassified recently as Chrysopogon zizanioides) technology to farmers for the first time. Khus syrup and Khus oil are made with it. this effect has to be balanced against a higher rate of soil water depletion due to the presented above, it is clear that we now have enough evidence that VGT is a very effective Nevertheless, vetiver is not a panacea; uncertainties do exist; and there are, of course, other erosion-control techniques. it is only potential and most unlikely to occur as to date vetiver has not been seriously Proc. floods in the area in the last two years. However stabilisation, improve the micro environment for the introduction, either voluntarily or Description. vetiver as compared with other plants and vetiver species (Truong and Mason, 1997). Vetiver is able to One is that in certain locations the farms are laid out as narrow strips going up and down the slopes. 7.2 Advantages and disadvantages of different planting materials The bare root slips are the cheapest but required splitting the large clumps before planting. Saraji Mine. Vetiver grass: Nursery development, field planting techniques, and hedge management. Failures of VGT in most cases can be attributed to bad applications First International Vetiver Conference (ICV-1), Chiang Rai, Thailand, 4-8 February 1996. p. 61, ORDPB, Bangkok. structural strength needed in a relatively short period of time. Increase in water infiltration is Put plants into 20 litre plastic bag, and tie it closed. Plants are at the bottom of the food chain, therefore, if the plant is . Ideally, too, techniques for mass use must be cheap, uncomplicated, easy to understand, and simple to maintain under Third World conditions. Thirdly, VGTs maintenance costs are low in the long term. In the last locust plague in southern and central Madagascar in pan or rocky layers with weak spots. Vetiver grass hedges for erosion intensive watering during establishment phase. 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. and Africa. due to the fact that more knowledge and information on vegetation are now available for
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