New technologies will be added regularly to this e-catalog.
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Catch the Rain, Grow with the Grain! The Demi-lune (half-moon) technology is a simple land restoration method used mainly in arid and semi-arid regions. By digging semi-circular pits to capture rainwater and restore soil fertility, it tackles land degradation, water scarcity, and low productivity. First used in Burkina Faso in the 1980s, it has spread to Niger, Mali, Chad, and Senegal. Suitable for millet, sorghum, and legumes, it boosts yields and soil health, helps farmers adapt to climate change, and supports SDGs like No Poverty and Climate Action.
Zaï pits are a traditional water-harvesting technique used in the Sahel to combat low rainfall, soil degradation, and poor soil fertility. By digging small pits that trap rainwater and organic matter, farmers can improve moisture retention, nutrient availability, and crop yields by 60–90%. This cost-effective method enables the rehabilitation of degraded lands and enhances the resilience of millet and sorghum crops. When combined with other soil and water conservation techniques, Zaï pits significantly contribute to sustainable dryland agriculture.