Abstract:
Study of microbial degradation using high concentration (500 mg/l) of endosulfan in carbon free
by four types of soil microorganisms (inorganic nitrogen bacteria and actinomycetes, bacteria
and actinomycetes which live in poor medium, organic nitrogen bacteria and fungi) isolated from
highly polluted soil (Gezira Scheme Pesticides Stores) by selective medium (Starch agar, Nitrate
agar, Meat Peptone Agar, Chabecks medium and Carbon Free Medium). The results indicated
the rate of reduction of half lives ranged between 64.4 - 72.9% for - endosulfan and 55.5 -
71.3% for -endosulfan and results indicated that high concentration of -endosulfan caused
reduction in the microbial capability. The higher reduction occurred in the Organic nitrogen
bacteria activity while the lowest reduction was noting in the activity of in Fungi. Mixing of
various groups of microorganism together did not caused much improvement in their activity on
the other hand the results showed that there were no significant differences in the reduction of
half-lives between high (500 mg/l) and low (100 mg/l) concentration of the Pesticide.
