Irrigation water is passed underneath the soil through

Irrigation water is passed underneath the soil through pipes. Pipes are used in a type of irrigation called sub-surface irrigation or sub-irrigation. In this method, water is distributed to the roots of plants through pipes that are buried underground. The pipes are usually made of porous material, such as clay, which allows water to seep through and reach the roots. Sub-surface irrigation has several advantages over other irrigation methods. It reduces water loss through evaporation and runoff, saves energy by requiring less water pressure, and prevents soil erosion. It is particularly effective in areas with high water tables, where excess water can be collected and reused. Therefore, irrigation water is passed underneath the soil through pipes in sub-surface irrigation.