Crop Production and Management Worksheet-3

Crop Production and Management Worksheet-3

1. The advantage of ploughing is:

(a) it allows the penetration of roots of plants

(b) it helps in proper aeration and eradicates weeds

(c) it promotes the growth of useful soil bacteria

(d) all of these

2. The practice which does NOT improve the fertility of soil from the following is:

(a) keeping the land fallow

(b) practicing crop rotation

(c) practicing monocropping

(d) practicing multiple cropping

3. The practice of keeping the fields free for a season to replenish the lost nutrients is:

(a) monocropping                        (b) crop rotation

(c) multiple cropping                  (d) field fallow

4. A farmer sows beans in his fields after harvesting a crop of wheat. The agricultural practice he is following is:

(a) crop rotation                           (b) multiple cropping

(c) fallow field                               (d) mixed cropping

5. Which of the following crops would enrich the soil with nitrogen?

(a) Apple            (b) Pea               (c) Paddy           (d) Potato

6. Which of the following statemesnts is NOT true?

(a) Rotation of crops improves the fertility of soil

(b) Rotation of crops saves a lot of nitrogenous fertilisers

(c) Rotation of crops helps in the weed control and pest control

(d) Rotation of crops helps mixing of nutrients uniformly

7. The method which enables us to select better and healthy seedlings for cultivation of rice is:

(a) transplantation                       (b) broadcasting

(c) spacing                                     (d) all of these

8. Which of the following is NOT true for chemical fertilizers?

(a) They are nutrient specific

(b) They are readily soluble in water

(c) They provide organic matter (humus) to the soil

(d) Overuse of chemical fertilizers pollute the soil

9. Eutrophication means:

(a) toxication of water by fertilizers

(b) decrease the growth of algae

(c) increase in the fertility of the soil

(d) all of these

10. The crop that requires more irrigation is:

(a) wheat           (b) rice               (c) maize            (d) jowar

Answer Key:

(1)-(d); (2)-(c); (3)-(d); (4)-(a); (5)-(b); (6)-(c); (7)-(a); (8)-(c); (9)-(a); (10)-(b)