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This work indicates that Bothriochloa biloba shows a strong preference for heavier-textured soils. On these soils the species, despite its known poor seed production, has been maintained under grazing over long periods of time. It is concluded that normal levels of grazing do not lead to elimination of Bothriochloa biloba, and in fact may enhance maintenance of the species. By contrast, at restricted levels of grazing, rank growth of Aristida ramosa causes reduction in total number of species and exclusion of Bothriochloa biloba. In grasslands grazed at an unrestricted level, stock selectively grazed other species of grass, giving Bothriochloa biloba a competitive advantage. Mowing and/or slashing also appeared to maintain the species.