Evergreen agriculture integrates trees and annual crops to maintain green cover year-round. This project explored scaling up evergreen approaches in East Africa. It found that: 1) Conservation agriculture with trees in Machakos, Kenya generated higher maize yields and more soil moisture than without trees. 2) Close tree spacings stored more moisture but reduced yields, while Calliandra calothyrsus spaced at 3m performed best. 3) Tree biomass provided fodder, fuelwood and stakes. 4) Community-based extension like Landcare may be better for scaling integrated natural resource management than individual training.
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