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  • Vanlauwe, B., Tittonell, P. and Mukalama, J. 2006. Within-farm soil fertility gradients affect response of maize to fertilizer application in western Kenya. Nutrient Cycling in Agroecosystems 76: 171–182.

  • Bernard Vanlauwe
    International Institute of
    Tropical Agriculture (IITA)
    Nairobi, Kenya
    B.Vanlauwe(at)cgiar.org