The development and application of pesticides has contributed in a long way in making the “Green Revolution” possible. These newer pesticides have synergetic effect over the control of pests that otherwise have negative impact on the quality and quantity of food. The toxicity, persistence, and environmental pathway are some important criteria that determine the impacts on ecology and environment. The generalization of the impact of pesticides on different organisms is difficult as these are of broad spectrum chemical nature. However, the major problem that arises due to widespread use of pesticides is the contamination of water by pesticide runoff. The chemically contaminated water in turn leads to the much aggravated problems of bio-concentration and bio-magnification of these chemicals. While the bio-concentration describes the transfer of a chemical from surrounding into the tissue/body of organism, the bio-magnification is related to the increased concentration of such a chemical along a food chain.
Studies for assessing the impact of pesticides on riverine insects