MCQ on Water Requirement for Different crops - Examups

Rice Cultivation Questions

1. What is the total water requirement for rice cultivation?

a) 1100-1200 mm

b) 1000-1100 mm

c) 1100-1250 mm

d) 1200-1300 mm

Answer: c) 1100-1250 mm
Explanation: The total water requirement for rice ranges from 1100 to 1250 mm depending on the agro-climatic situation.

2. During which stage of rice cultivation is water used the least?

a) Seedling stage

b) Vegetative stage

c) Reproductive stage

d) Ripening stage

Answer: a) Seedling stage
Explanation: Less water is consumed during the seedling stage of rice cultivation.

3. What is the water depth maintained during the vegetative phase of rice cultivation?

a) 1 cm

b) 2 cm

c) 5 cm

d) 10 cm

Answer: c) 5 cm
Explanation: During the vegetative phase, a 5 cm submergence is necessary to facilitate tiller production.

4. What is the purpose of mid-season drainage in rice cultivation?

a) To increase tiller production

b) To improve root respiration and reduce non-effective tillers

c) To decrease soil moisture

d) To increase the root depth

Answer: b) To improve root respiration and reduce non-effective tillers
Explanation: Mid-season drainage improves root respiration and checks the development of non-effective tillers.

5. At which growth stage of rice is water requirement critical?

a) Seedling stage

b) Reproductive stage

c) Vegetative stage

d) Ripening stage

Answer: b) Reproductive stage
Explanation: The reproductive phase, including flowering, is a critical stage where water stress can severely affect yield.

Rice and Crop Cultivation Questions

6. What is the total water requirement for groundnut?

a) 450-500 mm

b) 500-550 mm

c) 600-650 mm

d) 350-400 mm

Answer: b) 500-550 mm
Explanation: Groundnut requires a total of 500-550 mm of water for proper growth.

7. How many irrigations are typically required for groundnut?

a) 8

b) 10

c) 12

d) 15

Answer: b) 10
Explanation: Groundnut typically requires 10 irrigations during its growing period.

8. During which period does groundnut reach peak water requirement?

a) Germination

b) Peg penetration to pod development

c) Maturity

d) Early flowering

Answer: b) Peg penetration to pod development
Explanation: Groundnut’s peak water requirement occurs between peg penetration and pod development stages.

9. What is the total water requirement for finger millet?

a) 200 mm

b) 350 mm

c) 400 mm

d) 500 mm

Answer: b) 350 mm
Explanation: Finger millet has a total water requirement of 350 mm.

10. How many irrigations are required for finger millet?

a) 4

b) 6

c) 8

d) 10

Answer: b) 6
Explanation: Finger millet requires 6 irrigations during its growing period.

11. What is the water requirement for sugarcane cultivation?

a) 1800-2000 mm

b) 1500-1800 mm

c) 2000-2200 mm

d) 2200-2400 mm

Answer: c) 2000-2200 mm
Explanation: The total water requirement for sugarcane is between 2000 and 2200 mm.

12. When is the critical period for water demand in sugarcane?

a) Germination phase

b) Formative phase (120 days from planting)

c) Grand growth period

d) Ripening phase

Answer: b) Formative phase (120 days from planting)
Explanation: The formative phase is the critical period for water demand in sugarcane.

13. What is the total water requirement for maize?

a) 400-500 mm

b) 500-600 mm

c) 600-700 mm

d) 700-800 mm

Answer: b) 500-600 mm
Explanation: Maize requires a total of 500-600 mm of water for optimal growth.

14. Which stage of maize growth is most critical for water demand?

a) Sowing stage

b) Tasseling and silking

c) Knee-high stage

d) Early dough stage

Answer: b) Tasseling and silking
Explanation: Tasseling and silking stages of maize are critical for water demand.

15. What is the total water requirement for cotton?

a) 450-500 mm

b) 550-600 mm

c) 600-650 mm

d) 500-550 mm

Answer: b) 550-600 mm
Explanation: Cotton requires 550-600 mm of water for proper growth.

Rice and Crop Cultivation Questions

16. When should irrigation be stopped in cotton cultivation?

a) When the first boll of the last flush opens

b) At the vegetative stage

c) After flowering

d) After boll setting

Answer: a) When the first boll of the last flush opens
Explanation: Irrigation in cotton is stopped after the first boll of the last flush opens.

17. What is the total water requirement for sorghum?

a) 350 mm

b) 400 mm

c) 350-500 mm

d) 500 mm

Answer: c) 350-500 mm
Explanation: Sorghum requires a total of 350-500 mm of water.

18. How many irrigations are needed for sorghum?

a) 4

b) 6

c) 8

d) 10

Answer: b) 6
Explanation: Sorghum requires 6 irrigations during its growth cycle.

19. What is the total water requirement for pulses?

a) 200-400 mm

b) 200-450 mm

c) 300-500 mm

d) 400-600 mm

Answer: b) 200-450 mm
Explanation: Pulses require a total water amount of 200-450 mm depending on the variety and environmental conditions.

20. How many irrigations are typically required for pulses?

a) 2

b) 3

c) 4

d) 5

Answer: c) 4
Explanation: Pulses generally require 4 irrigations at critical stages like germination, flowering, and pod formation.

21. What is the irrigation interval during the critical stages for groundnut?

a) 5 days

b) 7-10 days

c) 12-15 days

d) 20 days

Answer: b) 7-10 days
Explanation: During the critical stages of groundnut, irrigation intervals of 7-10 days are maintained depending on soil and climate conditions.

22. How long is the typical growing period for rice?

a) 120 days

b) 135 days

c) 100 days

d) 150 days

Answer: b) 135 days
Explanation: The typical growing period for rice is 135 days.

23. During which stage of maize is the crop less sensitive to water stress?

a) Sowing

b) Grand growth

c) Tasseling

d) Silking

Answer: b) Grand growth
Explanation: Maize is less sensitive to water stress during the grand growth stage.

24. What is the water requirement of ragi?

a) 250 mm

b) 350 mm

c) 400 mm

d) 500 mm

Answer: b) 350 mm
Explanation: Ragi requires 350 mm of water.

25. Which crop has the highest total water requirement?

a) Rice

b) Sugarcane

c) Maize

d) Cotton

Answer: b) Sugarcane
Explanation: Sugarcane has the highest total water requirement, ranging from 1800 to 2200 mm.

Author: Examups

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