Question

Discuss why pesticides are used in very accurate concentrations and in a very appropriate manner?

Answer 1

The chemicals used to eliminate pests are called pesticides. Pesticides include insecticides (for killing insects), weedicides (killing weeds), rodenticides (for killing rats), fungicides (killing fungi) etc. Pesticides are used in very accurate concentration and in
very appropriate manner because excessive and regular use of these chemicals is not only hazardous, contaminates food and water but also affects the quality of products which adversely affects the health of consumers.
These pesticides should be used inaccurate concentrations because they have harmful effects on the environment also. They are non-biodegradable and once they enter the food chain they go on accumulating at the trophic level, a phenomenon called biomagnification. Such an accumulation of pesticides may be poisonous to both plants and animal species. Moreover, the runoff from fields carries pesticides into the water bodies. These have an adverse effect on aquatic animals and may cause their death also.