Question
Distinguish between fertilizer and manure. Give suitable examples. What are advantages and disadvantages of using fertilizer?
✓
Answer
Manures | Fertilizers | ||
1. | They are organic in nature. | 1. | They are inorganic in nature. |
2. | They are generally insoluble in water. | 2. | They are generally soluble in water. |
3. | They are not nutrient specific. | 3. | They are nutrient specific. |
4. | They are biodegradable. | 4. | They are non-biodegradable. |
5. | They are voluminous and bulky, so difficult to store and carry. | 5. | They can be easily stored and are easy to carry. |
6. | They provide humus to the soil. | 6. | They do not provide humus to the soil. |
Examples: compost and green manure. | Examples: urea and ammonium sulphate. |
- They are easy to store, transport and apply to crops.
- Being soluble in water, they are readily absorbed by the crop plants.
- They are nutrient specific and can be selected according to the specific nature of the soil.
- They are costly.
- These are the chemicals, which when washed away with rain water, pollute the water bodies.
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