UPSC Prelims 2021 – Question 37

Q37. Among the following, which one is the least water-efficient crop?

a) Sugarcane
b) Sunflower
c) Pearl millet
d) Red gram

Answer: (a)

• Option a is correct: Sugarcane is the least water-efficient crop. Among the given options, its water requirement is 1800-2200 mm/season which is the highest.
• Option b is incorrect: Sunflower’s water requirement was estimated at 672.4 mm/ season.
• Option c is incorrect: Pearl millet is a drought-tolerant crop. Water requirement: 350 mm/ season.
• Option d is incorrect: Red gram uses about 250- 400 mm/season of water.

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