Fig. 1 Schematic layout of the DIS irrigation network. Each of the salinity Treatments 1 through 9 is characterized by its target EC_iw (irrigation water EC) value, and are split into one to three irrigation sectors. Each irrigation sector has four laterals with the appropriate number of emitters to deliver its target EC_iw (see example in left dashed rectangle). The number of 1.5 m² barley plots in each sector is indicated within the small rectangles. The location of Replications 1 and 2 is shown on the right of the figure