Chemical fertilizers are inorganic fertilizers that dissolve in water and provide their nutrients immediately. Chemical fertilizers are manufactured industrially to be used in agriculture for improving crop production, so chemical fertilizers are also known as synthetic fertilizers.

                  The high rate of population explosion has led to increased demands for food and for that man is using chemical fertilizers to increase the yield of crop and fish. Chemical fertilizers also gives the exact composition of nutrients available and mineralization is very fast on both Land and pond productivity. The use of fertilizers undoubtly increased the crop and fish production. But now scientist proved that the benefits are very small than its dangers.

Chemical fertilizers definitely increased the crop and fish production. The chemical fertilizers are manufactured in industry where burning of petroleum and coal take place. Indeed in production of chemical fertilizers high rate of pollution occurred in our nature, which is very harmful to our planet and us. The chemical fertilizers used on crops are making their way to humans and other organisms through the food chains. They are causing many hazardous effects on our body systems both on genetically and physically. The chemical fertilisers used in the fields get washed out of the soil into lakes and rivers where they contaminated the water.