Allied & ICAR Exam Bank • ALLIED_1207 NAT • 1 Mark

Section 5: Irrigation and Drainage Engineering

Crop Water Requirement

Subtopic: Reference Evapotranspiration

Question Statement:

For a wheat crop at peak mid-season stage, the crop coefficient is $K_c = 1.15$. If the reference crop evapotranspiration on a given day is $ET_0 = 6.0\text{ mm/day}$, the actual crop evapotranspiration $ET_c$ in mm/day is:

Answer Key:

6.9

Step-by-Step Solution & Explanation

$ET_c = K_c \times ET_0 = 1.15 \times 6.0 = 6.90\text{ mm/day}$.
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