ABSTRACT
I. Introduction ...............................................................................................................................74 A. The Rhizosphere: A Definition .........................................................................................74 B. Rhizodeposition of Organic Substances: Current Opinion ..............................................75 C. Carbon Rhizodeposition: Current Estimates.....................................................................75 D. Nitrogen Rhizodeposition: Current Estimates ..................................................................76 E. Coevolution of Plants and Rhizobacteria..........................................................................76 F. The Study of Soil-Plant-Microbe Interactions ................................................................76 G. The Influence of Plant and Microbial Factors..................................................................78
