Fertilizers
Fertilizers
are nutrients which are necessary for the growth and productivity of cultivated
plants.
Fertilizers
are classified as inorganic (chemical) and organic (biological).
|
Inorganic fertilizers |
Organic fertilizers |
|
Synthetic |
Biological in origin |
|
Mineral salts of NPK are mixed in
definite proportion |
Farm Yard Manure (FYM), compost and
green manure. |
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Excessive use lead to pollution of soil, air and ground water |
Use increases the fertility of soil. |
|
Soil becomes acidic |
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