Half-Moon Method: Desert to Farmland Transformation

This article showcases the 'forgotten' half-moon method revitalizing deserts, particularly in the Sahel as part of the Great Green Wall. Half-moon-shaped ditches, 4 meters in diameter, are dug with water flowing into the straight side and an embankment on the curved side to retain it. One person can dig one in a day, allowing rainwater penetration into crusted soil for plant rooting. It captures water for immediate agriculture and recharges 10-15% of groundwater, ensuring sustainability. Combined with syntropic farming from Brazil, mimicking natural forests, it uses indigenous practices for soil rejuvenation. Horizontal beds grow okra and tomatoes, while trenches host fruit trees. Native species in pits protect and enrich soil, promoting abundance. The project engages local communities, balancing water use without depletion. It highlights global collaboration for local regreening, turning wastelands into productive oases and demonstrating scalable, low-tech solutions for climate resilience.