CSA Xpert

Subsurface drainage removes the excess water which has infiltrated into the soil and that can be held there by capillary forces even against the gravitational force. This type of drainage is typically needed for the soils that contained impervious or slowly permeable rocks or a layer below the soil surface. This impervious layer does not allow the water to move deeper into the soil so that the crop production does not hamper. Subsurface runoff systems include pipe/ tile drainage, mole drainage and drainage wells. The subsurface drainage system of 20 m spacing and 1.5 m depth can increase the cotton, wheat, and rice yield upto a great extent. The cost of making a subsurface drainage system is 2-2.5 times higher than the surface drainage system.