The status of pesticide pollution in surface water (Lakes) of Bijapur.

ABSTRACT

The paper evaluates and summarizes the results of the pollution of surface waters (lakes) of Bijapur by pesticides. Pesticide classes mostly detected involve herbicides used extensively in cotton, vegetables and grape production, organophosphorus insecticides as well as organochlorines due to their persistence in aquatic environment. The compounds most frequently detected were Endosulphan, 4- bromro-2-chlorphenol, Captan, Chloripyrifosethyl, Fipronil, Oxyfluorfenand monochrotophos respectively. . Nationwide, in many cases the reported concentrations ranged in low levels. However, elevated concentrations were recorded in areas of high pesticide use and intense agricultural practices. Generally, similar trends and levels of pesticides were found in Bijapur lakes. Monitoring of the Bijapur water resources for pesticide residues must continue, especially in agricultural regions, because the nationwide patterns of pesticide use are constantly changing. All these were present above the permissible limits specified by the European Economic Community (EEC), which is the norm used all over the Europe. Moreover emphasis should be placed on degradation products not sufficiently studied so far. Information on pesticide pollution of surface waters in Bijapur is reported.