‘Fertilizer’ Trees Provide Boost to African Crop Yields, Study Says

Yale Environment 360: The planting of so-called “fertilizer trees,” indigenous tree species that draw nitrogen from the air and replenish the soil, has significantly improved the crop yields in five African nations over the last two decades, researchers say. Since the 1980s, when the World Agroforestry Centre started working with local farmers to identify trees that can help improve soil fertility, more than 400,000 small farmers in parts of Malawi, Tanzania, Mozambique, Zambia, and Zimbabwe have planted these “fertilizer”......

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