Abstract
Bio stimulants are natural or synthetic substances that can be applied to seeds, plants, and soil. These substances cause changes in vital and structural processes in order to influence plant growth through improved tolerance to abiotic stresses and increase grain yield and quality. In addition, bio stimulants reduce the need for fertilizers so an experiment was carried to investigate the influence of water qualities with three levels (1.2, 8, and 10 ds.m-1 ) as a first factor and the bio stimulants combinations were used of the poultry litter, Bio–booster (Zytonic F), and nano NPK fertilizer as a second factor, to study the level of tomato sensitivity to salt stress due to the scarcity of salinity studies on a tomato plant in Iraq, the experiment was conducted based on Spilt - Plot system within the RCBD design, The results confirmed that the saline water caused a drop in the vegetative growth and yield. The fertilizer combinations had been producing significant differences compared to control, The treatments, F5 (poultry manure 30 tons. ha-1 + nano fertilizer) 2g.liter and F6 (Poultry manure 30ton. ha-1 + Zytonic-F 0.2g+10g of peat moos plant-1) obtained the best rates, in most of the traits of vegetative growth and yield, and it has been decreasing the harmful effect of saline water on tomato growth.
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