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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.
MahuWévi, the solution for aquaculture that sustainably feeds The MahuWévi is an advanced oxygenation system designed for sustainable fish farming in sub-Saharan Africa, particularly for tilapia. It provides efficient, low-cost oxygen enrichment, ensuring high dissolved oxygen levels through short, regular micro-injections, while operating with minimal energy use. This technology reduces water demand by 50%, lowers nitrogen and phosphorus runoff, and enhances water recycling for crop irrigation, supporting a circular economy. Adaptable to various users, MahuWévi boosts profitability (with an ROI of 30%) and aligns with key SDGs by promoting food security, environmental sustainability, and economic opportunities for youth and women in aquaculture.