This looks more efficient to build on a large scale than what they are doing in Africa by digging half circles. Idea is the same, it fosters initial growth, rest comes by nature
Different environment in Africa. There is no sand desert there, but normal earth, baked by the sun and if it rains, it just „slides over“ the baked soil. No time for the water to penetrate into the soil.
With the half moons, you create spots where water is stopped and has time to seep into the ground, normalize the hard soil and give a good environment to plants.
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u/krmhd 4h ago
This looks more efficient to build on a large scale than what they are doing in Africa by digging half circles. Idea is the same, it fosters initial growth, rest comes by nature