Microbial activities and physicochemical properties of pesticide treated soils and waters

This study determined the concentration of pesticides contaminating soil and water, effect on microbial activity physicochemical properties. Nutrient agar was used for enumeration total heterotrophic bacteria by pour plate method. Enumeration fungi done with Potato Dextrose Agar. Soil CO2-evolution estimated every 5-days 25 days. Total nitrogen using macro-Kjeldhal distillation Available phosphorus analyzed Bray No. 1 Dehydrogenase in samples assayed 2,3,5-triphenyl tetrazolium chloride solution. COD method Ademoroti. DO Winkler’s Bacillus subtillis, macerans, Pseudomonas aeruginosa, Psedomonas putida A. niger were common occurrence all samples. There significant changes (P≤0.05) activities available phosphorus, pesticide polluted water The BOD ranged from 15.837±0.187 to 20.853±0.254 mg/L. DO, control significantly higher than values obtained at point pollution. indicated extent pollution; further addition wastes may deteriorate existing hygienic quality these locations.