The rhizosphere effect ofAndropogon pumilus Roxb. on soil nematodes, percent organic matter and percent total nitrogen has been studied and compared with nonrhizosphere soils. The proportion of plant parasites and microbivores were considerably higher than the proportion of miscellaneous feeders and predators in the rhizosphere than in the root free soils. Nematode population in the rhizosphere reached a peak during the flowering stage in November. Nematode density, percent organic matter and percent total nitrogen were significantly more in the rhizosphere soil than the root free soil. In the rhizosphere soil nematode abundance showed a significant positive correlation with percent organic matter and percent total nitrogen indicating that the root exudates promote increase in the population of micro-organisms and nematodes.