Utilization of Cypermethrin by bacteria isolated from irrigated soils

Abstract

Soil bacteria capable of utilizing Cypermethrin as a source of carbon were isolated using enrichment technique. The bacteria were Psuedomonas aeruginosa, Serratia spp Micrococcus sp, Staphylococci and Streptococcus sp. Growth of P. aeruginosa was determined in the presence of 1:106 and 1:105 Cypermethrin in nutrient broth. The result showed that Cypermethrin at the
concentration of 1:105 stimulated the growth of the bacterium faster than 1:106 concentration of the pesticide and the control (nutrient broth not blended with the pesticide).

Keywords: Cypermethrin, soil, enrichment, bacteria, Pseudomonas aeruginosa.