On 9th of May, 2019, at University of Danang, Vietnam Vetiver Network signed Cooperation MoU with Research Center for Risk Management and Safety Sciences. The cooperation aims to promote fundamental and applied studies that contribute to prevention and mitigation of natural disasters, to study and support regional disaster prevention and mitigation, and to educate and spread the knowledge of natural disasters on the general public, the local government staff concerned, […]
The project combines Vetiver grass and coco-fiber on dike in Botolan, Zambales. (1) 2.3 kilometers length, an average of 6 meters slope surface run; (2) Vetiver rows planted at 10 plants/meter in between coconets; (3) 25 workers finished the project in 21 working days; (4) 22,000 sq.m. of nets were used; (5) 766 pcs. of logs laid out and connected.
Vetiver is planted for both pollution control and beautification in urban areas of Australia, and around the world. Feature source: The Philippines Vetiver Network
Dissemination of the Vetiver System met with difficulty as growers do not receive any direct income. Therefore, if vetiver can be used in some ways, growers would earn extra income and willing to grow vetiver. The slides show some various popular utilization of harvested vetiver plant.
Vetiver can adapt to the soil with high acidity, salinity and alum. The grass has a large root system but the roots are very small and smooth (average diameter is only about 0.5-1.0mm) which is very favorable for the growth of bacteria and fungi; it is necessary for absorbing the decomposition of pollutants. Initially, vetiver is proven the ability to stop spreading dioxin to surrounding land.
Vetiver is used for erosion control and sediment (silt) control. The incredibly tough and deep fibrous roots hold the soil together and reduce erosion. Where the vetiver clumps are planted close together in a hedge trapping silt particles. The paper describes how to establish VS on minesites effectively.
The use of Vetiver grass replaces the need for a concrete block lined pit, creates privacy and actively helps decompose the waste. The paper gives a completed guide to make a vetiver latrine.
Processing effluent with very high nutrient and salt contents are stored in two storage ponds. The effluent was used to irrigate Vetiver planting on the banks of the ponds and treated in situ with Vetiver floats on the ponds.
Vetiver could be used as an integrated technique for environmental management of mining activities. First, solid mining wastes could be stabilized not to release to surroundings. Second, wastewater including acid mine drainage (AMD) could be purified by phytofiltration. Third, the surrounding lands contaminated by heavy metals could be cleaned up by phytoextraction.
Entomologist Johnnie van den Berg (Potchefstroom University, South Africa) found that larvae prefer to lay eggs on vetiver leaves planted around the crop instead of on the maize or rice crop itself. Vetiver leaves are hairy, the larvae that hatch on them cannot move around easily, resulting in about 90% of the eggs are dead. Vetiver also harbors many helpful insects that are predators of pests that attack crops.