The consumptive use of water for a crop during a particular stage of growth is 2.0 mm/day. The maximum depth of available water in the root zone is 60 mm. Irrigation is required when the amount of available water in the root zone is low. Frequency of irrigation should be

The consumptive use of water for a crop during a particular stage of g

1.	The consumptive use of water for a crop during a particular stage of growth is 2.0 mm/day. The maximum depth of available water in the root zone is 60 mm. Irrigation is required when the amount of available water in the root zone is low. Frequency of irrigation should be
A.	10 days
B.	15 days
C.	20 days
D.	25 days
Answer» C. 20 days

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