Fertilisers:

(i) A fertiliser is an inorganic salt.

(ii) A fertiliser is prepared in factories.

(iii) A fertiliser does not provide any humus to the soil.

(iv) Fertilisers are very rich in plant nutrients like nitrogen, phosphorus and potassium.

Manures:

(i) Manure is a natural substance obtained by the decomposition of cattle dung, human waste and plant residues.

(ii) Manure can be prepared in the fields.

(iii) Manure provides a lot of humus to the soil.

(iv) Manure is relatively less rich in plant nutrients.