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प्रश्न
Compare the use of manures and fertilizers in maintaining soil fertility.
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उत्तर
| 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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संबंधित प्रश्न
Compare the use of manure and fertilizers in maintaining soil fertility.
Why are manures and fertilizers used in fields?
Define manure. What are different manures and how do they affect the soil ?
Give a short account of biofertilizers.
How does excessive irrigation lead to soil salinity ?
Mention three effects of excessive irrigation.
Write about three main criteria which should be considered while selecting the crops for rotation?
Distinguish between fertilizer and manure. Give suitable examples. What are advantages and disadvantages of using fertilizer?
Explain what will happen if in a cultivated field only manures are supplied and in another field only fertilizers are supplied, keeping all other conditions similar.
Compare between mixed cropping and intercropping. Write down from advantage of both of these techniques.
