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Andy Bradford Vetiver, the miracle grass Vetiver zizanioides
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Vetiver, the miracle grass
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Content Morphological characteristics Physiological characteristics Ecological characteristics Uses & Strategies Advantages Disadvantages Conclusion
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Morphological Characteristics Massive finely structured root system Fast growing (rooting depth 34m) Stiff and upright stem Tolerant of relatively deep water Grows into dense hedges New shoots emerge from base New roots develop from nodes
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Physiological Characteristics Tolerance to extreme climatic variation –prolonged drought, flood, submergence & extreme temperature (14 o C to 55 o C) Highly tolerant to adverse soil conditions – soil salinity, sodicity, acidity (pH range 3,0 to 10,5), aluminium, arsenic, cadmium, copper, chromium, lead, manganese, mercury, nickel, selenium & zinc
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Ecological Characteristics Highly intolerant to shading, reduces growth & may eliminate plant Best suited to open ground Weed control during establishment Pioneer plant on disturbed lands Trees & shrubs will shade out vetiver, but will then replace vetiver as the main stabilizing agent
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Uses & Strategies Reduces runoff & soil erosion Conserves soil moisture Sediment Trap Stabilizers slopes, banks, terraces & gullies Protects masonry terraces, road edges, river banks, aqueducts, bridges & irrigation channels Thatching material Rehabilitation of toxic lands
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Vetiver Oil The essential oil is extracted by steam distillation from the chopped, dried and soaked roots and rootlets. One of the most earthy essential oils - use when you are overusing your brain or mental capacities or when you feel spaced out. It is a wonderful anti-stress oil and a strengthener when the body is debilitated. Possible Uses Acne, arthritis, cuts, depression, exhaustion, insomnia, muscular aches, oily skin, rheumatism, sores, stress.
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Advantages Very simple, practical & inexpensive Low maintenance Very effective means of –soil & water conservation, sediment control, land stabilization & rehabilitation Multiple uses Environmental friendly Does it offer a miracle solution?
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Disadvantages Seed easily spread in the wind – may become a weed, infesting an area Unpalatable to livestock (unsuitable fodder) Not suitable for human consumption Not a suitable option for small holdings Oil extraction unlikely option for poor farmers Lower stabilizing qualities than trees & shrubs World Bank publicity campaign
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