s:785:"%T Benefiting from N2 -fixation and managing rhizobia 
%A Mafongoya, P.L. 
%A Giller, K.E. 
%A Odee, D. 
%A Gathumbi, S.M. 
%A Ndufa, S.K. 
%A Sitompul, S.M. 
%X Nodulation and nitrogen fixation in the Leguminosae (Fabaceae) family classification of rhizobia and quantification of N2 fixed by different legumes are reviewed. Some promising management options intended to improve N2-fixation by direct selection of rhizobia in soil or by screening and breeding of legumes for increased N2-fixation are discussed. The effects of pruning soil phosphorus and pH available nitrogen and interactions of nematodes and rhizobia on nodulation and N2-fixation are analysed. The fate of fixed nitrogen can be determined by the recovery efficiency of N and leaching and gaseous N losses. 
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