Question

Chemical fertilizers are useful to crops. In which way they cause environmental pollution?

Answer 1

The usage of chemical substances in crops have been adverse in delivering effects on waterways and caused by chemical values.

This should utilze with over abundance of nutrients and it is made up of reduces amount of oxygen.

It should evaluate in brining existing organisms and taken in the water use up of oxygen that is left back with excess fertilizer.

Answer 2

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• Chemical fertilizers are useful to crops in getting high yield.

• But fertilizers contaminate the soil with impurities.

• For examples, arsenic lead and cadmium present in traces in rock phosphate mineral get transferred to super phosphate fertilizer.

• Since these materials are not degradable, their accumulation in the soil leads to poison of crops.

• The over use of NPK fertilizers reduce quality of vegetables.

• And crops grown in soil over the years.

• It also reduces the protein content of wheat, maize,grains etc...

• Excess potassium content in the soil decreases vitamin 'C' and carotene content in vegetables and fruits.

• The vegetables and fruits grown over chemically fertilized soil are more prone to attacks by insects and diseases.

• Hence over use of fertilizers, pollute the environment.

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