Mongabay: It sounds counter-intuitive: Grow more food by planting less. But it’s a plan that scientists think will produce enough crops to feed Africa’s quickly expanding population. African farmers who sow food crops mixed with plants called perennials–which live two years or more–can enrich nutrient-poor soils and increase their bounty, argue scientists in the Sept. 20 issue of Nature.
Increasing food production is critical in Africa, said soil scientist John Reganold of Washington State University,…

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