A fertiliser is an inorganic salt. Manure is a natural substance obtained by the decomposition of cattle dung, human waste and plant residues.
A fertiliser is prepared in factories. Manure provides a lot of humus to the soil.
A fertiliser does not provide any humus to the soil. Manure provides a lot of humus to the soil.
Fertilisers are very rich in plant nutrients like nitrogen, phosphorus and potassium. Manure is relatively less rich in plant nutrients.
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