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Sub-irrigation is used in areas with:(a) Low water table(b) High water table(c) Sloping terrain(d) Flat terrainThe question was asked during an interview for a job.My doubt is from Types of Irrigation in chapter Other Major Topics in Civil Engineering of Basic Civil Engineering

Answer» RIGHT answer is (b) High water table

The explanation is: Sub-irrigation is a METHOD of artificially RAISING water table to allow the soil to be moistened from below PLANT’s root zone. It is also used in COMMERCIAL greenhouse production.


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