Chemical pesticides are the most important component of
any pest management strategy.
Soil, an important componentoftheenvironment,actasasinkforthepesticidesused
in agriculture.
The pesticides present in soil sometimes act asasourceofcontaminationforsucceedingcrop.
Fromsoil,
the pesticides residues can reach water bodies by leaching
and runoff.
Pesticides are inherently toxic molecules.
Once
they reach the water bodies, they start adversely affecting
the aquatic environment.
Presence of pesticides residue in ground water is extremely hazardous to human beings as ground water is major source of drinking water.