Effect of Drip and Subsurface Drip Irrigation on Maize Yield

A study was carried out under the conditions of Harran Plain in 2016 to compare drip irrigation system (DIS) and subsurface drip irrigation system (SDIS) that contained different irrigation applications in cultivation of maize (Zea mays L. indendata). The irrigation treatment [I1 (1.5), I2 (1.25), I3 (1.0), I4 (0.75), I5 (0.5)] were determined according to Class A Pan method in both irrigation systems and optimum Class A Pan crop coefficients (Kcp) were investigated. The yield, the amount of irrigation water (I), the water consumption of plant (ET), the water use efficiency and the irrigation water use efficiency (WUE and IWUE) were obtained for maize. According to the irrigation water and the plant water consumption, the values of grain yield and 1000 grain yield were analyzed. As a result, the Kcp coefficient was determined as 1.25 for both irrigation systems. The yields were obtained to be between 698.4 and 1151.5 kg da-1 by using DIS and they were obtained between 705.4 and 1157.5 kg da-1 by using SDIS. According to the treatments, the amount of water applied by DIS and SSDIS were same and they changed between 421.5 and 1264.5 mm. The plant water consumption values were between 585.7 and 1294.6 mm according to DIS and they were between 572.5 and 1286.7 mm according to SSDIS. The water use efficiency and IWUE values were calculated as 0.82-1.19 kg m-3, 0.83-1.66 kg m-3 for DIS and 0.83-1.23 kg m-3, 0.84-1.67 kg m-3 for SSDIS respectively