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प्रश्न
Explain how soil gets affected by the continuous plantation of crops in a field.
उत्तर
Continuous cultivation of crops in the field causes deficiency of some nutrients in the soil, such as nitrogen, phosphorus, potassium etc. Due to which its fertility also decreases. This is the reason why crops should not be grown continuously in the field and the field should be left fallow for some time. Another method is crop rotation, in which farmers grow a different type of crop after one crop, so that nitrogen is replenished in the soil.
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संबंधित प्रश्न
Arrange the following boxes in proper order to make a flow chart of sugarcane crop production.
Complete the following word puzzle with the help of the clues given below.
Down
1. Providing water to the crops.
2. Keeping crop grains for a long time under proper conditions.
5. Certain plants of the same kind grown on a large scale.
Across
3. A machine used for cutting the matured crop.
4. A rabi crop that is also one of the pulses.
6. A process of separating the grain from chaff.
Describe the ‘drip irrigation’ method.
Which of the following tools would a farmer use to remove weeds from the field?
Given below are statements about the harmful effects of weeds on crop plants.
- They interfere in harvesting.
- They help crop plants to grow healthily.
- They compete with crop plants for water, nutrients, space and light.
- They affect the plant growth.
Choose the correct combination of statements.
State whether the following statement are True/False. Correct the false statement.
Growing different crops in different seasons in the same field will deplete the soil of nutrients.
Despite favourable climatic conditions, a farmer’s crop failed to give good yield. Give the possible reasons for this.
______ is a fodder crop.
Mention the difference between manure and fertilizer.
Define threshing.
