Livestock Sustainable Nutrient Cycling in Mized Farming Systems of Sub-Saharan Africa

Addis Ababa Africa ILCA agricultural productivity agroforestry animal production approaches areas biomass cattle Centre for Africa Chairperson constraints cowpea crop and livestock crop production crop residues crop-livestock systems cropland cycling in mixed effects efficient Ethiopia external inputs faecal fallow farmers feed Fernández-Rivera fertiliser forage legumes formerly with ILCA goals grazing ICRISAT ICRISAT Sahelian Center increased interactions International Livestock Centre JM Powell Kenya kg/ha land legume livestock production long-term Mali manure manure and urine millet mineral fertilisers mineralisation mixed farming systems Nairobi natural pastures natural resource Niamey Niger Nigeria nitrogen nutrient cycling nutrient flows nutrient losses nutrient sources nutrient transfers organic matter output plant policy makers population population densities potential production systems rainfall rangeland Rapporteur recycling regional role of livestock Sahel Sahelian Center BP season semi-arid semi-arid tropics semi-arid West Africa socio-economic soil fertility strategies sub-Saharan Africa sustainable agriculture systems in sub-Saharan Technical Session University of Hohenheim yields zone