2026-06-27http://hdl.handle.net/123456789/132291Reviews the present state of knowledge about the biological contribution of nitrogen by forage legumes in sub-Saharan Africa; indicates the main factors limiting the contribution of biological N by forage legumes; highlights the potentials of legume - food crop - livestock interactions in various production systems; suggests areas where intensified research is justified in terms of scientific knowledge and practical benefits.Open Accessfeed legumesnitrogen fixationconstraintsfood cropslivestockresearchJournal Article