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Corresponding author: F.F. Lasheen fawzy_lasheen@agr.asu.edu.eg ABSTRACT: This study was carried out in the Ornamental Plants Farm, Horticulture Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt. Two individual experiments were done. The first experiment aimed to study the effect of Phos root-x as newly rooting promoter at different rates (0, 0.5, 1, 1.5, 2, 2.5 and 3 cm3/l) on rooting of the terminal cuttings of rosemary plants. This study was carried out on 20th of July during the two seasons of 2019 and 2020. The experiment consisted of 7 treatments with 3 replicates, every replicate contained 3 cuttings per treatment. Data collected refer to that the 2.5 cm3/l of the newly rooting promotors were the best. Chemical analysis of terminal cutting refers to a decreasing in C/N ratio of terminal cuttings with increasing of Phos root-x concentrations. The second experiment was done on 25th of October in the same seasons, 2019 and 2020 for both terminal and middle cuttings and treated with Phos root-x complex with or without IBA, the treatments were 0, 1, 2, 3 cm3/l of Phos root-x with or without IBA at 0, 100, 500 ppm in combination. The experiment consisted of 24 treatments; each treatment consisted of three replicates with 3 cuttings per replicate. Data showed that for all parameters the best types for rooting was terminal cuttings, and a higher concentration of phos rootx favored better results especially with 3 cm3/l level. These results may be due to the higher concentrations of amino acids complex inside the newly rooting promotor compound (Phos root-x).

IMPACT OF ROOTING PROMOTER (PHOS ROOT-X) WITH OR WITHOUT USING IBA ON ROOTING OF TERMINAL AND MIDDLE CUTTINGS OF ROSEMARY (ROSMARINUS OFFICINALIS L.)