Figure 2.

(A) The effect of salinity on the plant yield (in terms of total dry mass). The yellow circle shows the ST-index, and the ECi is the electrical conductivity of the irrigation water at the yield reduced to 50% of the absolute yield (Y). Experimental data (dots). The model curve for Yr = a*eb*ECi. EC_i50 and ST-index are the mid-yield salinity and the salinity tolerance index, respectively, as calculated by Steppuhn et al. (2005). * indicates significant differences at p < 0.05. (B) Exponential decay model fitted on the growth-related parameters, such as plant height, stem diameter, and total dry mass-produced (adapted from Fernandez [20] with slight modifications).