Fertilizers are water soluble substance rich in nutrients which are added to soil to enhance the fertility of the soil. This note contains information on use of fertilizers, their types, and elements that make up good fertilizer.
They are water soluble substance rich in nutrients which are added to soil to enhance the fertility of the soil.
Organic fertilizers: Those fertilizers which are obtained from theliving source are known as organic fertilizers. They are two types:
Green manure is defined as the practice of growing, ploughing under and mixing of green plants with soil to improve the fertility of the soil and ultimately crop productivity.
It is a kind of natural fertilizer which is prepared by mixing of cattle dung, poultry dropping and crop residues like remnants of straw, rotten vegetables, etc. The mixture is stored in a pit. Sometimes, lime is added to the pit containing mass to make a good kind of fertilizer. Gradually, by the action of micro-organisms, decomposition takes place and converts it into compost. It provides most of the nutrients required by plants and enhances the fertility of the soil.
Chemical fertilizers: The fertilizers prepared artificially in industry by using minerals are called chemical fertilizers.
Example: Ammonium sulphate Urea
Example: Ammonium phosphate ; Calcium super phosphate
Example: Potassium chloride Potassium nitrate
On the basis of number of primary nutrients supplied, fertilizers are of following three types:
Example: Potassium chloride
Environmental deterioration due to unscientific and improper use of chemical substance is called chemical pollution.
The substances which are used to increase the fertility of soil is called fertilizer. They are of two types:
i. Organic fertilizers
ii. Inorganic chemical fertilizers
|Organic Fertilizers||Inorganic Chemical Fertilizers|
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