Allied & ICAR Exam Bank • ALLIED_0486 NAT • 2 Marks

Section 5: Irrigation and Drainage Engineering

Crop Water Requirement

Subtopic: Crop Water Requirement

Question Statement:

The reference crop evapotranspiration on a given day is $ET_0 = 6.0\text{ mm/day}$. For wheat at peak flowering stage, the crop coefficient is $K_c = 1.15$. The actual crop evapotranspiration $ET_c = K_c \cdot ET_0$ in mm/day is (rounded off to one decimal place):

Answer Key:

6.9

Step-by-Step Solution & Explanation

$ET_c = 1.15 \times 6.0 = 6.9\text{ mm/day}$.
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