THE VETIVER NETWORK (INTERNATIONAL)
Vetiver System - A GreenVetiver System - A GreenInvestment for SustainableInvestment for SustainableDevelopment and DisasterDevelopment and Disaster
Mitigation.Mitigation.
An OverviewAn Overview
THE VETIVER NETWORK (INTERNATIONAL)
THE VETIVER SYSTEMTHE VETIVER SYSTEM
A “green” technology that is low cost, easy to use, and it works
Used for:
Soil and Water ConservationInfrastructure Stabilization
Flood ControlWater Quality Improvement
Pollution ControlLand RehabilitationDisaster Mitigation
HandicraftsMany other uses
THE VETIVER NETWORK (INTERNATIONAL)
THE PLANTTHE PLANTVetiveria zizanioidesVetiveria zizanioides
Malaysia - close upClump grass
Australia - Queensland Costa Rica
THE VETIVER NETWORK (INTERNATIONAL)
THE ROOTTHE ROOT
China - excavated root.Average tensile root
strength 75 MPa
Malaysia - longitudinal section through hedgenote the root mass in the top meter of the soil profile. This type of root mass will improvesoil shear strength by up to 39%
THE VETIVER NETWORK (INTERNATIONAL)
THE VETIVER GRASS SPECIALTHE VETIVER GRASS SPECIALCHARACTERISTICSCHARACTERISTICS
Grows under extreme and wide range of conditions:
Long Living Perennial GrassAir temperatures: -14 º C to >55º C
Soil pH from <3 to >10Annual Rainfall 300 mm to > 5,000 mm
Tolerant to all heavy metalsSaline tolerantFire tolerant
Few Pests and diseasesPowerful (75 MPa root strength) and deep root system
Non competitive and non invasive
THE VETIVER NETWORK (INTERNATIONAL)
THE VETIVER GRASS TECHNOLOGYTHE VETIVER GRASS TECHNOLOGYThe basic technology comprises a hedgerow of vetiver grass
planted on the contour
Malaysia - 30 month hedgerow planted on the contour
Malaysia - close uphedge cross section
THE VETIVER NETWORK (INTERNATIONAL)
PROPAGATIONPROPAGATION
Vetiver grass cultivars originally from South India are sterile and non invasive.It is these types that are used for the Vetiver System.
Vetiver is propagated by root division.If large quantities of plant material is required nurseries have to be established.
China - 20 ha nursery - bare rooted plants
Malaysia - containerized vetivernursery
THE VETIVER NETWORK (INTERNATIONAL)
PLANTINGPLANTING
Mexico - Planting by hand
India - Preparing planting material
Australia -machine planting.
Modifiedvegetable planter
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEMS FOR SOIL ANDVETIVER SYSTEMS FOR SOIL ANDWATER CONSERVATIONWATER CONSERVATION
Malawi - erosion control on maize field
Columbia - CIAT vetiver- cassava trial on
a steep slope
El Salvador- hillside
conservation
Costa Rica - vetiver used to protect tobacco crop
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEMS FOR SOIL ANDVETIVER SYSTEMS FOR SOIL ANDWATER CONSERVATIONWATER CONSERVATION
Panama - vetiver hedge on asteep slope in Chiriqui. Prior tovetiver these fields were subject
to serious land slip
Madagascar - sediment fromcropped field filtered out by
vetiver hedgerow. Eventuallynatural and stable terraces will
be formed behind thehedgerow
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEMS FOR SOIL ANDVETIVER SYSTEMS FOR SOIL ANDWATER CONSERVATIONWATER CONSERVATION
China - VS for wind erosioncontrol
Thailand -vegetable
crops in thehighlandsprotectedby vetiver
Congo (DRC) - a reshaped urbangully about to be stabilized with
vetiver grass
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEMS FORVETIVER SYSTEMS FORINFRASTRUCTURE STABILZATIONINFRASTRUCTURE STABILZATION
Vietnam - Ho Chi Minh Highway - withand without vetiver
Vietnam - Ho Chi Minh HighwayCompletely stable and cyclone
proof
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEMS FOR RIVERVETIVER SYSTEMS FOR RIVERBANK, POND AND IRRIGATIONBANK, POND AND IRRIGATION
CHANNEL PROTECTIONCHANNEL PROTECTION
Thailand - fresh and salt water fishand prawn ponds are protected
with Vetiver
Vietnam - Vetiver stabilizes thisirrigation canal
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEMS FOR FLOODVETIVER SYSTEMS FOR FLOODCONTROLCONTROL
Australia - even on flat land therecan be serious erosion.
- a long vetiver hedgerow protects afield from flood damage.
Vietnam - forty provinces are now usingvetiver to stabilize sea dykes against
cyclone created storm damage
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEMS FOR LANDVETIVER SYSTEMS FOR LANDREHABILITATIONREHABILITATION
Venezuela - rehabilitation of bauxitemine using Vetiver Systems - reducingthe flow of heavy metals from entering
surface water supply
Australia - gold mine slimes damprotected by vetiver, preventing
wind blown cyanide soil particles
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEM FOR POLLUTIONVETIVER SYSTEM FOR POLLUTIONCONTROLCONTROL
Vetiver was grown in the lefthand beaker.
After 4 days it reduced nitratesby 94% and Phosphates by 90%.
In Vietnam and China floatingrafts of vetiver have been usedto help clean piggery effluent
ponds
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEM FOR DISASTERVETIVER SYSTEM FOR DISASTERMITIGATIONMITIGATION
Disasters caused by flooding create havoc for communities, and mostoften results in loss of life and income. The Vetiver System can prevent
such disasters and also help stabilize landscapes and infrastructureafter disasters.
Vetiver System is particularly good in reducing landslides, highwaycollapse, building collapse, river levee breeching, and other damage
due to heavy rains and flood.
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYTSTEM FORVETIVER SYTSTEM FORLANDSCAPINGLANDSCAPING
Vetiver was used to stabilize and reducepollution on this hotel beach front in
Senegal and to create a basis forlandscaping. Top left: before
Bottom left: six months after plantingvetiver grass
India: coastal stabilization
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEM FOR OTHERVETIVER SYSTEM FOR OTHERUSESUSES
HandicraftsBuilding materials
MedicinalFuel
EthanolAromatic oil
Water purificationPaperMulch
Insect ControlForage
THE VETIVER NETWORK (INTERNATIONAL)
VETIVER SYSTEMVETIVER SYSTEM
Web site: http://www.vetiver.org/
Blog Site:http://vetivernetinternational.blogspot.com
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