The use of different concentrations of Nickel and Lead for the inhibition growth of some types of soil microorganisms

Abstract

Three types of Mycorrhiza has been chosen R. rosulus, S. varigatus and P. involutus in removing and lowering the ascending concentration of nickel and lead elements during three incubation and contact periods (5,7 and 10 days), and comparing the isolated growth with control sample. Type of P. involutus is the most efficient in the removal by observing the growth of isolates by increasing it's diameter compared to the control samples and the concentration of nickel and lead, and for all the days of incubation, while the type S. varigatus was the highest growth at low concentration of nickel and lead only for all periods of incubation, for type R. rosulus, the diameter was smaller as compared to control samples and for all elements concentration of nickel and lead, except at concentration (2.5ppm), which showed increase in diameter for nickel, and is generally observed increase diameters of the isolates of the three types by increasing periods of incubation and all elemental concentrations of nickel and lead, and this increase is less than at high concentrations of these elements and of all species studied.