ever green energy
TRANSCRIPT
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EverGreen Energy – an integrated power-generation food-production
system for Africa Dennis Garrity
Drylands Ambassador, UNCCD
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Trend in biomass productivity by farming systemAlarming Land Degradation in Southern Africa
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The Opportunity
South-South Extension of a Fully Commercialized Food-Energy System from Sri Lanka to Eastern and Southern Africa
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Gliricidia trees intercropped with smallholder coconut in Sri Lanka. The trees are pruned every 8 months. The wood is feedstock for electrical power generation. The foliage is used for biofertilizer and fodder for livestock on the farm.
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3.5 kv gassifier – 10+ HHs
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35 kv gassifier – small plant & 10+ HHs
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Industrial size gassifier – large plants
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Commercialization of gliricidia power generation in Sri Lanka
• Tokyo Power commissioned a 10 MW gliricidia-fueled plant in Trincomalee in 2009
• A second Tokyo Power plant of 5 MW capacity in Mahiyanganaya in early 2014.
• A 15 MW plant is operating in Embilipitiya. • A 500 kW plant is operating in Thirappane
(Anuradhapura) • At least 10 more plants are being
developed throughout the country.
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Gliricidia is distributed throughout Africa and used by farmers as an excellent source of biofertilizer and fodder
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DroughtDroughtFlood
P addition resumed
Long-term maize yield without fertilizer in a Gliricidia system
P stopped
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Impact of fertilizer trees on maize yield under farmer management
_______________________________________Plot management Yield (t/ha)
Maize only 1.30
Maize + fertilizer trees 3.05 ____________________________________________________________
2011 Survey of farms in six districts (Mzimba, Lilongwe, Mulanje, Salima, Thyolo and Machinga)
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FaidherbiaGliricidia
Maize stubble
Faidherbia
Gliricidia
Maize
DRY SEASON
WET SEASON
Fertilizer-Fodder-Fuelwood Trees in Food Crop Production Systems
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Malawi National Agroforestry Food Security Programme
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EverGreen Energy
Gliricidia already widely distributed Major species in Malawi for increasing crop
yields in AFSP program Massive scaling-up programs in Malawi and
Zambia and other countries already in place
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What Needs to be Done?• Research, feasibility analysis, and
public-private partnership development to pave the way for
• Attracting and harnessing substantive levels of commercial and public investment in the development of an
• Agroforestry-based energy industry in Eastern and Southern Africa, with an emphasis on
• Implementing new commercial-scale projects that can fully demonstrate the potential for expansion.
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18 African countries are now engaged in EverGreen Agriculture
Farmer Managed Natural Regeneration
Conservation Agriculture with trees
Trees interplanted in conventional tilled cropland
Farmer Managed Natural Regeneration +
Trees interplanted in conventional tilled cropland