Original Articles

A root growth study used to examine the suitability of two grasses for stabilizing toxic mine wastes1

DOI: 10.1080/00725560.1978.9648847
Author(s): J.R.C. HillDepartment of Conservation and Extension, Salisbury Research Fellow, Department of Botany,


The rooting ability of Dactyloctenium geminatum and Paspalum vaginatum was studied in a pot trial using mining wastes (slimes) containing a total 1 980 ppm arsenic and a specific conductivity of 16 050 micromhos. Under the conditions of the pot trial, P. vaginatum produced at least double the biomass of roots and shoots when compared with D. geminatum. The effect of compounded fertilizer (8N: 15P: 10K) at 1 000 kg/ha equivalent on shoot development was highly significant; whilst there was a significant effect on increased rooting ability, this was not as great as the relative effect on shoot development.

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