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

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

Sugarcane
Sunflower
Pearl millet
Red gram
This question was previously asked in
UPSC IAS – 2021
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Among the given options, sugarcane is generally considered the most water-intensive crop. While the water requirement varies depending on the region, soil type, and climate, sugarcane needs a large amount of water throughout its long growing season compared to the other crops listed. Pearl millet (Bajra) and Red gram (Arhar) are typically grown as rainfed crops or require less water, especially Pearl millet which is known for its drought tolerance. Sunflower also requires less water than sugarcane. Therefore, sugarcane is the least water-efficient crop among the options.
– Water efficiency of crops refers to the amount of yield produced per unit of water consumed.
– Sugarcane is a long-duration crop with high water requirements.
– Pearl millet and Red gram are relatively drought-tolerant crops.
Water efficiency can also be measured by the yield per unit of water transpired (WUE – Water Use Efficiency) or applied (IRWUE – Irrigation Water Use Efficiency). Crops like sugarcane, rice, and cotton are known for high water consumption. Promoting water-efficient crops and practices is crucial for sustainable agriculture, especially in water-scarce regions.

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