Rainwater management for food security and environmental services in Ethiopia
1. Rainwater Management for Food Security and Environmental Services in Ethiopia International Conference on Ecosystem Conservation and Sustainable Development, Ambo, Ethiopia, 10-12 February 2011 Tilahun Amede and Team Nile Basin Coordinator, CGIAR Challenge Program Water for Food
2. CPWF aims to increase water productivity and resilience of social and ecological systems Through its broad partnerships, it conducts research that leads to local impact and political change
6. Make Choices : Scenarios to 2050 Based on WaterSim analysis for the CA Today CA Scenario Without productivity improvements CA Scenario: Policies for productivity gains, upgrading rainfed , revitalized irrigation, trade
11. Rainfall –Runoff distribution High rainfall variability & unreliability; significant runoff variability Considerable spatial and temporal redistribution is needed for meaningful development
33. Identifying where water saving could be at farm and landscape scales? High unproductive water losses = indicator of productivity gap
34. ~ ¾ of energy spent on maintenance Livestock energy budget 67% of feed from crop residues low quality: 5.8 – 7.4 MJ ME kg -1 Productivity gaps and losses..
35. E.g. Watering Points for Improved Livestock Production Energy for walking is reduced from 1956 MJ ME / TLU to 584 MJ ME / TLU per year (Milk equivalent of 252 litre) Survey: milk production increased from 343 liter to 463 liter per lactation per cow Water: no change in water depleted for feed production Milk water productivity per cow improves by 35% (survey)