Evaluating the Hydraulic Performance of Emitters of Subsurface Drip Irrigation Systems in Sugarcane Cultivation in Iran

Abstract

To ensure optimal operation of the drip irrigation systems, should be evaluated periodically. This research was designed to evaluate the technical and hydraulic evaluation of subsurface drip irrigation system in sugarcane plant in research station sugarcane research and training institute of Khuzestan during 2016-2017 and 2017-2018 growing season. For this study, four laterals were selected in experimental field (primary, one third and the last lateral) and four sections were determined on each laterals of the first, one third, two thirds and the last section. Then the volume of effluent water was measured for three minatory at any point measurement and evaluation system parameters were calculated. Results of the evaluation of the droplets in the laboratory showed that the Cv, Cu and Eu coefficient were 15, 90 and 84 percent and the values of the power x and the k coefficient in the discharge-pressure equation were, respectively, -0.043 and 2.41, respectively. Mean Cu, Eu, Vqs and Uqs during two growing seasons average, respectively 89.2, 87.8, 10.3 and 89.7 percent, that based on these results, system performance is generally in the range of well-placed Also, by measuring pressure at different points of the system in the middle of the second crop season, the ASAE assessment indicators Containing: Vqs, Uqs,Vhs and Vpf were respectively, 9, 91, 25 and 13 percent. System is considered to be relatively good and good in terms of the overall performance of the droplet and uniformity of distribution.