Michael, P.2017-06-152017-06-152014International Journal of Environment, 2014; 3(1):56-672091-2854http://hdl.handle.net/2440/105993A significant environmental problem is the disturbance of acid sulfate soils which contain high amounts of sulfuric acid or have the potential to form it, resulting in pollution of the environment due to mobilization of toxic metals into soil and water systems. Reported in this study are two bioassay experiments carried out using wheat plants (Triticum sp.) to investigate the potential causes of a significant environmental problem experienced in a farmland. The results obtained show that availability of excessive amounts of Fe in the rhizosphere and formation of Fe-complex plagues, either acted as barriers to nutrient uptake or enhanced uptake of potentially toxic metals in excessive amounts; coupled with the presence of toxic levels of Al killed the vegetation on the farmland.en© International Journal of Environment. Articles in the International Journal of Environment are Open Access articles published under the Creative Commons CC BY-NC License (https://creativecommons.org/licenses/by-nc/4.0/). This license permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.Bioassay; toxic metals; environmental problemBiological assessment of the effects of toxic metals on plant biomass productionJournal article003003056010.3126/ije.v3i1.9942190146