5. Explain how fertilisers are different from manure.
6. What is irrigation? Describe two methods of irrigation which conserve water
7. If wheat is sown in the kharif season, what would happen? Discuss.
8. Explain how soil gets affected by the continuous plantation of crops in
a field.
9. What are weeds? How can we control them?
10. Arrange the following boxes in proper order to make a flow chart of
sugarcane crop production.
Answers
Answer:
5. Manure is an organic substance that is obtained from decomposition of vegetables and animal waste. Fertilizers are inorganic substances manufactured in factories. Manures are relatively less rich in plant nutrients, they only remove general deficiency of soil.
6. The process of watering the crops is called irrigation. Two methods of irrigation are: (i) Sprinkler system : This system is used on the uneven land where less water is available. ... (ii) Drip irrigation: This system is used to save water as it allows the water to flow drop by drop at the roots of the plants.
7. If wheat is sown in the Kharif season (from June to October), then the whole crop might get destroyed because of many factors such as lack of optimum temperature, adaptability, availability of pests, etc. Kharif season includes the rainy season, which is not favourable for the growth of the wheat crop.
8. Continuous plantation of crops in a field makes the soil poor in certain nutrients such as nitrogen, phosphorus, potassium, etc. ... When a farmer continues to grow' crops one after the other, then all nutrients available in the soil reduce and the crop yield decreases automatically.
9. Tilling before sowing of crops helps in the uprooting and killing of weeds. Which may dry up and get mixed with soil. Weeds are also controlled by using certain chemicals, called weedicides. Weedicides are sprayed in the fields to kill the weeds.
10. the 10 answer is up
here is your answer :
5. Fertilizers are produced in factories. Since, manure consists of nutrients in small quantities, large servings of manure is required by plants. On the other hand, being rich in nutrients, fertilizers are required in small quantities. ... Excessive use of fertilizers also makes the soil infertile.
6. The process of watering the crops is called irrigation. Two methods of irrigation are: (i) Sprinkler system : This system is used on the uneven land where less water is available. ... (ii) Drip irrigation: This system is used to save water as it allows the water to flow drop by drop at the roots of the plants.
7. Wheat crops are sown from November/December to March/April. It is grown in winter and requires less water. If wheat is sown in the Kharif season, its production will be decreased considerably.
8. If there is a continuous plantation of crops in the field the soil will lack nutrients and the soil will become poor in nutrients and minerals. As we know plant require nutrients for their growth and development. When there is continuous plantation the nutrients in the soil will reduce and the crop yield will also reduce.
9. Weeds can be controlled using weedicides: It is a chemical, which is sprayed in the fields to kill all available weeds. Weedicides are not harmful to crops. Tilling before sowing of crops also helps in removing weeds: Tilling uproots the weeds.
10. your answer given in the fig !
Explanation:
hope this answer will help u dear !
thank you keep learning !
