Question

A field of 500 hectares is to be irrigated for a particular crop having 100 days base period. The total depth of water required by the crop is 100 cm. Calculate the duty of the water (in hectares per cubic meter).

• A. 8.64
• B. 57.87
• C. 86.4
• D. 864

Answer 1

The correct option is D 864

Given that: Area of field (A) = 500 hectares
$\text{Base period}\left(B\right)=100\text{days}$
$\text{Depth of water (Delta)}\left(\Delta \right)=100\text{cm}=1\text{m}$
$\text{Duty}\left(\Delta \right)=\frac{8.64\times B}{\Delta }$
$\text{where, B is in days and}\Delta \text{is in meters and Duty (D) is in ha/cumec.}$
$\text{Then, Duty}\left(\Delta \right)=\frac{8.64\times 100}{1}$
$=864\text{ha/cumec.}$
Hence, the duty of the water is 864 ha/cumec.