Which of the following statements indicate advantages of ...
Which of the following statements indicate advantages of sub-surface irrigation?
I. Low operation cost once established
II. Does not disturb the movement of implements
III. Permits efficient use of water
IV. easily floods the field
I, II and III only
II, III and IV only
I, II and IV only
I, II, III and IV
Correct answer is B
No explanation has been provided for this answer.
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