COMPARISON OF THE PERFORMANCE OF MOBILE DRIP IRRIGATION AND SUB-SURFACE DRIP IRRIGATION USING NANOTECHNOLOGY IN THE GROWTH AND YIELD BROAD BEEN (VICIA FABA L.)

Abstract

A field study was carried out in clay loam soil that classified into Typic Torrifluret in Ramadi city (College of Agriculture- University Of Anbar) during the fall season of 2018 in order to compare mobile drip irrigation with under surface drip irrigation by using Nano-Root guard drippers and their effects in physical properties and water consumption of bean as well as, the study targeted determination of water use efficiency using Najeeb Kharoofa equation depending on crop coefficient that obtained from recent researches and weather data of experiment location. All agricultural practices were done as recommended and the experiment was laid out as RCBD with three replications of each irrigation system. Seeds of bean (cv. Veto) were sown in 20th of October 2018 and the harvest time was in 13th of March 2019. Irrigation dates were at 50% depletion of available water according to evaporation pan Bean productivity was significantly increased at under surface drip irrigation with 7.71-ton ha-1 in comparison with 6.32-ton ha-1 that obtained from mobile drip irrigation. The difference were significant between water use consumption values that were calculated according to Najeeb Kharoofah equation and between data collected from evaporation pan, however it was 148.48 mm by Najeeb Kharoofah equation while it was 446 mm according to evaporation pan data. Regarding the method of irrigation, they were affected. The effect was clear in the mobile drip irrigation compared to sub-surface drip irrigation as the evaporation rate was higher. However, the average of soil water content average for the three replications along growing season was 21.75% while it was 24.96% in the sub-surface drip irrigation.