%0 Generic %D 1995 %T Biological Nitrogen-Fixation - an Efficient Source of Nitrogen for Sustainable Agricultural Production %A Peoples, M. B. %A Herridge, D. F. %A Ladha, J. K. %K ammonia volatilization %K azolla %K casuarina %K cropping systems %K legume %K legume residues %K leucaena-leucocephala %K lowland rice %K n-2 fixation %K natural n-15 abundance %K new-south-wales %K nitrogen fertilizer %K north-eastern victoria %K rhizobia %K symbiotic n-2 fixation %K wetland rice %B Plant and Soil %V 174 %P 3-28 %G eng %N 1-2