Diversifying crops ‘could green African agriculture’

SciDev.Net: The biodiversity of crop fields could be key to a greener revolution in Africa, where ecosystems are degrading and crop yields are stagnating, says a study conducted in Malawi. African farmers could halve their fertiliser use and still get the same yields, the study found, with less year-to-year variation in yields and with as much as 70 per cent more protein in grains -- by simply rotating their maize crops with shrubby legumes. The legumes, such as soybeans, groundnuts or pigeon pea, fix......

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