Calculate the amount of water for scheduling irrigation at 0.5 IW/CPE ratio with 10 cm of CPE

Correct option is A

IW/CPE ratio method is used for irrigation scheduling.
IW = IW/CPE × CPE.
Given IW/CPE = 0.5 and CPE = 10 cm.
IW = 0.5 × 10.
Hence irrigation depth required is 5 cm.
Therefore option (a) is correct.