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Question
Compare the use of manures and fertilizers in maintaining soil fertility.
Solution
| Manure | Fertiliser |
| It is a natural substance that is obtained by the decomposition of animal wastes (gobar) and plant residues. | It is a man-made substance. It is an inorganic salt or an organic compound. |
| It adds organic matter in the form of humus to the soil. | It adds minerals to the soil. |
| It is insoluble in water and nutrients exist locked inside the organic compounds of humus. Hence, nutrients present in manure are absorbed slowly by the crop plants | It is soluble in water and hence it's readily absorbed by the crop plants |
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