Persistent HCH and DDT residues in green fodders of Varanasi

Abstract

The ill effects of green revolution include residues of extensively used chemical pesticides in various environmental components. The present study was designed to analyze the levels of organochlorine pesticide residues in green fodder samples collected from different localities of Varanasi. α-HCH concentration (mg/kg) in green fodder obtained from different blocks were 0.00193 (Baragaon), 0.00036 (Cholapur), 0.00067 (Arazilie) and 0.00187 (Harhua). Among HCH isomers γ-HCH was more persistent and α-HCH was less persistent. DDT and its isomers present in all blocks but far below from the MRL. highest concentration of 4,4’DDE and 2,4’DDD, were present in Harhua, Araziline block respectively whereas 2,4’DDT and 4,4’DDT were present in Baragaon. Among all blocks Baragaon showed highest concentration for DDT isomers.