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Which factor does NOT significantly affect the efficiency of a subsurface irrigation system?

64. Which factor does NOT significantly affect the efficiency of a subsurface irrigation system?

1. Soil permeability
2. Crop type
3. Wind speed
4. Depth of water table

Answer

The correct answer is: C) Wind speed

Explanation

Wind speed has little to no impact on subsurface irrigation efficiency because the water is delivered underground, unaffected by surface conditions.