This work was done at Central Laboratory of Date Palm for Research and Development at Agriculture Research Centre (ARC), Egypt, to investigate the inversely effects of yeast (Saccharomyces cerevisiae 1 · 109 cells/ml) at 40 and 50 cm/l and amino acids at 3 and 6 cm/l on the bad expression of salinity at two levels 16,000 and 18,000 ppm NaCl + CaCl2 2: 1 by weight on the growth of date palm (Phoenix dactylifera L.) plantlets cv. |