Crop Production and Management

Q1. Fill in the blanks.

                            i.        The same kind of plants grown and cultivated on a large scale at a place is called crop.

                           ii.        The first step before growing crops is preparation of the soil.

                          iii.        Damaged seeds would float on top of water.

                          iv.        For growing a crop, sufficient sunlight and nutrients and water from the soil are essential.

                          v.        The removal of weeds is called weeding.

                         vi.        Weeds are also controlled by using certain chemicals, called weedicides.

Q2. True/False

                            i.        ‘Combine’ is in fact a combined harvester and thresher. True

                           ii.        A seed drill is also used to uproot weeds. True

                          iii.        We get our food only from plants. False

                          iv.        Pumps are commonly used for lifting water. True

                           v.        The fresh crop has less moisture. False

                         vi.        Dried neem leaves are used for storing food grains at home. True

Q3. Give few examples of weedicides.

Ans. 2, 4-D

Q4. Name the bacteria which fix atmospheric nitrogen.

Ans. Rhizobium bacteria

Q5. What is called weeding?

Ans. The removal of weeds is called weeding.

Q6. Name the tool used for tilling of soil.

Ans. Tilling of soil is done by using a plough.

Q7. How are crumbs broken?

Ans. Crumbs are broken with the help of plank.

Q8. Write 2 natural methods of replenishing the soil with nutrients.

Ans. 1. Use of manure  2. Crop rotation

Q9. How is levelling of soil done?

Ans. The levelling of soil is done with the help of a leveller.

Q10. What are the two ways of sowing the seeds?

Ans. Seeds can be sown manually or by seed drills.

Q11. How is ploughing done nowadays?

Ans. Nowadays ploughing is done by tractor driven cultivator.

Q12. What is sowing?

Ans. Sowing is the process of planting seeds in the soil.

Q13. Name two categories of crops based on season.

Ans. Two categories of crop based on season are kharif and rabi crops.

Q14. What is threshing?

Ans. Separation of the grains from the chaff is called threshing.

Q15. How are grains stored at home?

Ans. Dried neem leaves are used for storing food grains at home.

Q16. What are called crumbs?

Ans. The ploughed field may have big pieces of soil called crumbs.

Q17. Why is it important to level the field after ploughing?

Ans. The field is levelled for sowing as well as for irrigation purposes.

Q18. What are good quality seeds?

Ans. Good quality seeds are clean and healthy seeds of a good variety.

Q19. Give some examples of Rabi crop?

Ans. Examples of rabi crops are wheat, gram, pea, mustard and linseed.

Q20. What is harvesting?

Ans. Harvesting is the cutting of the mature crop manually or by machines.

Q21. Name the two modern methods of irrigation that help us to use water economically.

Ans. Sprinkler System and Drip system

Q22. Why can paddy not be grown in the winter season?

Ans. Paddy requires a lot of water. Therefore, it is grown only in the rainy season.