Question

The wheat crop requires 64 cm of water during 150 days of the base period. The total rainfall during this period is 140 mm. Assume the irrigation efficiency to be 65%. The area (in ha) of the land which can be irrigated with a canal flow of $0.01m^3/s$ is

• A. 13.82
• B. 16.85
• C. 23.40
• D. 28.40

Answer 1

The correct option is B 16.85

Given,
Base period, B = 150 days

$\Delta =64-14=50cm=0.50m$

$\because \Delta =8.64\frac{B}{D},$

$\therefore D=\frac{8.64\times 150}{0.5}=2592ha/cumec$

$\therefore Area,A=2592\times 0.01=25.92$

As efficiency of irrigation is 65%

$\therefore$ $\text{Required area for wheat crop}$
$=25.92\times \frac{65}{100}=16.85ha$