Any substance that adversely affects the productivity of soil is called a soil pollutant. Contamination of soil with pollutants like insecticides, artificial fertilizers and industrial wastes is called soil pollution. The major sources of soil pollution are:
- Pollutants like acids washed off from the atmosphere (acid rain).
- Pesticides and herbicides sprayed in fields.
- Excessive use of artificial fertilizers.
- Solid wastes like garbage, trash, ash, building material, plastic, bottles and cans.
How to Control Soil Pollution?
- Avoiding excessive use of pesticides, herbicides and fertilizers.
- Minimizing emissions from motor vehicles and industries (to control acid rain).
- Using the garbage, trash and Industrial wastes as sanitary landfill where untreated waste is buried in layers covered with soil.