Question

The following data were noted from an irrigation field:

The net irrigation requirement per meter depth of soil will be

• A. 75 mm
• B. 125 mm
• C. 50 mm
• D. 25 mm

Answer 1

The correct option is D 25 mm

Net irrigation requirement

= Consumption Use - Effective Rainfall

$=0.5\times (0.2-0.1)\times \frac{15}{10}\times 1000$

$=0.05\times \frac{15}{10}\times 1000=75mm$

Effective rainfall = 50 mm

$\therefore$ Net irrigation requirement

= 75 mm - 50 mm = 25 mm