Question

Which of the following is helpful in controlling soil pollution?

• A. Use of pesticides should be minimised
• B. Cropping techniques should be improved to prevent growth of weeds
• C. Use of fertilisers should be judicious
• D. All of the above

Answer 1

The correct option is D All of the above

The harmful change in the colour, texture, and quality of soil due to addition and removal of any material is called soil pollution. Soil pollution reduces the productivity of the soil. There are several pollutants that cause soil pollution. For example, agricultural wastes, radioactive wastes and discarded materials of hospitals etc. Weeds are the unwanted crops that compete with the main crop. Weedicides are the chemicals used to kill the weeds so that plants can grow properly. Cropping techniques should be improved to prevent the growth of weeds to minimise soil pollution. Other chemicals like pesticides, insecticides, fertilizers etc. are also used to promote the growth of crops. These are the chemicals that get consumed with the food by the living beings and are also involved in changing the pH of the soil. These are harmful to living beings and the ecosystem. For example, repeated use of fertilizers makes the soil acidic which in turn decreases the productivity of the soil. So, use of pesticide and fertilizers should be minimised, fertilizers should be replaced by manures and composts. Therefore, the correct option is D.