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What will be the depth of irrigation (cm), for a crop scheduled at CPE of 8 cm and IW/CPE ratio of 0.8?
Question

What will be the depth of irrigation (cm), for a crop scheduled at CPE of 8 cm and IW/CPE ratio of 0.8?

A.

64

B.

0.64

C.

6.4

D.

10

Correct option is C

Formula: Depth of irrigation (IW) = IW/CPE × CPE
=0.8×8=6.4= 0.8 \times 8 = 6.4=0.8×8=6.4 cm
This method is used in irrigation scheduling based on pan evaporation.

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