Application of Subsurface Drip Irrigation System and Management Parameters in Corn Production

Subsurface drip irrigation is a highly efficient method to optimal use of water by minimizing water losses through evaporation from the soil surface¡ reduce deep percolation¡ and thus helping to keep water and preserve the nutrients used by crops. This irrigation method have high priority in different parts of the world on different row crops¡ garden and vegetables compared to other methods irrigation such as of surface drip irrigation¡ sprinkler and surface irrigation. In Iran¡ for the crops with cultivated area¡ such as corn¡ were been very productive which may have an important role in the water balance of country''s. In this article¡ the goal is introduction of benefits and limitations of subsurface drip irrigation for corn and provide technical advice for design¡ implementation and operation of this system in corn farming. For this purpose reports and publications on the yield and water productivity of corn under subsurface drip irrigation system were studied. The results showed that depth of dripline due to the soil texture was variable¡ and was in range from 0.15 to 0.45 meters. Also¡ the distance between the dripline was affordable with 1.5 meters for cultivated corn with a row spacing of 0.76 m. Also¡ the results showed that grain yield of corn¡ plant biomass and absorb plant nitrogen fertilizer by fertigation during the growing season has increased under the subsurface drip irrigation system. Generally¡ when we are faced with water shortage and water tension of the product¡ application of subsurface drip irrigation with a proper design and management will increase corn production levels¡ yield and yield components and¡ also increase the irrigation water productivity.