Agroforestry Systems in the Semi-Arid and Arid Tropics
(Click on the light green headings to view the ecosystem)
An Ecosystem Archive
Silvopastoral system
Silvopastoral system on West Timor, Indonesia involving Acacia nilotica which is managed for livestock forage and fuel. The trees are pollarded periodically and the branches left at ground level so that livestock can browse the high protein leaves and pods. The fuel wood is used for evaporating brine to produce salt.
Prosopis cineraria
Farmer lopping leafy shoots from Prosopis cineraria, near Jodhpur, Rajasthan, India. Prosopis trees are managed on crop land usually in association with millet and sorghum. Once crops are harvested, the high protein forage from Prosopis is used to sustain the livestock through the dry season. Associated species in the background are Zizyphus mauritiana and Calotropis procera.
Acacia mellifera
Goats browsing Acacia mellifera, northern Kenya. The high protein content of leguminous species such as Acacia enables ruminants to benefit more from low quality forage during the dry season.
Azadirachta indica
Neem (Azadirachta indica) trees retained for livestock shade on communal grazing land, Hyderabad, India.
Azadirachta indica
Neem (Azadirachta indica) shelter belt in the Majjia Valley, Niger. Browsing by livestock has reduced the effectiveness of the windbreak by raising the bottom edge of the canopy to around 2 meters.
Faidherbia albida
Scattered Faidherbia (Acacia) albida trees in Niger. Associated species include Calotropis procera and Euphorbia tirucalli. [Slide 1 of 4].
Acacia parkland
Faidherbia (Acacia) albida parkland with planting holes for sorghum, Niger. Crops are planted at the end of the dry season when trees have a full canopy.[Slide 2 of 4].
Acacia canopy loss
Faidherbia (Acacia) albida showing loss of canopy due to leaf fall midway through rainy season. The reduction in canopy density benefits the crops growing beneath the tree due to a reduction in competition for light and water. [Slide 3 of 4].
Complete canopy loss
Faidherbia (Acacia) albida tree showing complete loss of canopy as millet crop approaches maturity. [Slide 4 of 4].
Butyrospermum parkii
Karite (Butyrospermum parkii) trees over cassava in the central African Republic. The Karite produces a nut (Shea butter nut) that is valued locally fo its oil. Shea butter is now being used by cosmetic companies (e.g. Body Shop) for the manufacture of a variety of moisturizing creams.
Butyrospermum parkii
Karite (Butyrospermum parkii) trees over corn in the Central African Republict.
Leucaena leucocephala
Alley cropping corn between hedgerows of Leucaena leucocephala, Machakos, Kenya. The hedgerows are pruned intensively to reduce competition for soil moisture.
Borassus flabellifer
Borassus flabellifer palms on crop lands in Tamil Nadu State, India. The palms are tapped for a sugary exudate for the manufacture of palm sugar, palm wine and vinegar. The women make a variety of handicrafts from the leaves. The palms provide significant income to farm families during the dry season when there are no crops in the field.
 Borassus flabellifer
Borassus flabellifer palms on crop lands in west Timor, Indonesia.
Machakos homegarden
A homegarden in Machakos, Kenya showing the use of trees for shade, fuelwood, fruit, and soil conservation.

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Funded by a grant from the Cornell Agroforestry Working Group (CAWG) and the Distance Learning Program of the Cornell International Institute for Food, Agriculture and Development (CIIFAD).

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