Cerrado Tropical Soil Engineering
Geography: Americas · South America · Brazil
The Brazilian cerrado — a savanna biome covering 25% of the country — has naturally acidic, aluminum-rich soils that are toxic to most crops. EMBRAPA developed lime application techniques, phosphate fertilization methods, and crop varieties adapted to these conditions, transforming 'unfarmable' land into a breadbasket.
The result is one of the most consequential agricultural transformations in history. Brazil went from a net food importer in the 1970s to the world's largest exporter of soybeans, coffee, sugar, orange juice, and beef. The cerrado now produces roughly 40% of Brazil's grain output.
The technology package — soil correction + adapted varieties + no-till systems — is being studied for application in African savannas with similar soil chemistry. If the cerrado model transfers to sub-Saharan Africa, it could unlock hundreds of millions of hectares of currently unproductive land.
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