Doi: https://doi.org/10.37229/fsa.fjh.2025.06.03

Sustainability in the use of clean agriculture through the addition of organic and biological fertilizers is one of the most important factors influencing the development of fruit seedlings in nurseries and orchards, given that they do not have any harmful effects on humans and the environment, in addition to providing seedlings with some of the important nutrients they need, which contribute directly or indirectly to improving their vegetative growth. This experiment was conducted during the 2024 growing season to study the effect of adding the liquid organic fertilizer Isapion at three concentrations (0, 5 and 10 ml L^-1) and foliar spraying with sugar alcohol sorbitol at three concentrations (0, 25 and 50 g L^-1) and two concentrations of vitamin B1 (thiamine) (0 and 50 mg L^-1) and the interaction between them in improving some growth characteristics of Ziziphus jujuba seedlings. The results showed that high concentrations of the studied factors, each individually, or the dual and triple interactions achieved a significant superiority in the studied characteristics (increase in seedling height, area of ​​one leaf and number of new branches, The percentage of dry matter in leaves) compared to the comparison treatment, and it was shown that the triple interaction between concentrations (50 g L^-1 of sorbitol + 50 mg L^-1 of thiamine + 10 ml L^-1 of liquid organic fertilizer) gave the highest significant values ​​and improved the vegetative growth characteristics.