Question

Subirrigation has been used for many years in field crops in areas with high water tables.

(a) True

(b) False

I have been asked this question in a job interview.

This interesting question is from Earthwork and Estimation topic in chapter Irrigation Works, Culverts, Bridges and Wells of Civil Engineering Drawing

Answer 1

Right choice is (a) True

Best explanation: It is a method of artificially raising the water table to allow the soil to be moistened from below the plants’ root zone. Often those systems are located on permanent grasslands in lowlands or river valleys and combined with drainage infrastructure. A system of pumping stations, canals, weirs and gates allows it to increase or decrease the water level in a network of ditches and thereby control the water table.