Between 1960 and 2000, Asian and Latin American food production tripled, thanks to the use of high-yielding varieties of crops. Africa can follow suit, but only if depletion of soil nutrients is addressed.
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Sánchez, P. Tripling crop yields in tropical Africa. Nature Geosci 3, 299–300 (2010). https://doi.org/10.1038/ngeo853
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