Afield experiment was conducted in order to evaluate the effect of two compounds of humate; potassium humate and silicate, in combination with compostto decrease the harmful effects of the irrigation water salinity on potato crop growth, yield and quality, as well as, the soil available nutrient NPK. Three replicates of a split plot design were employed. The main plots were assigned for the irrigation treatments e.g. 0.5 (W₁), 2.25 (W₂) and 5.7 ds m^-1 (W₃). The sub-plots were six improvement treatments e.g. F₀ (without compost applying), F₁ (compost applying to soil), F₂ (compost applying to soil plus foliar spraying by potassium silicate solution (10 cm³.L) ), F₃ (applying compost to soil plus coated tubers with potassium silicate, F₄ (compost applying to soil plus foliar spraying with potassium humate) and F₅ (compost applying to soil plus coated tubers with potassium humate) . The findings demonstrated that the majority of vegetative growth characteristics, tuber quality, and tuber yield (t acre^-1) were all impacted by increasing the salinity of irrigation water over the course of two seasons.  Spraying potato plants twice with potassium humate or silicate solutions had a notable positive impact on all of the studied characteristics. Comparing to the control treatment, the results showed that spraying potassium silicate had a high significant influence on plant height (cm) and leaves number/plant, and also improved total tuber yield, average tuber weight (g), tubers number, and yield per plant over the two seasons. It could be concluded that, spraying potato plants twice with potassium silicate solution in the presence of the applied compost to the soil ( F₂ ) is the most efficient treatment for reducing the harmful effects of irrigation water salinity on potato and yield quality, and improving the available nutrient levels, NPK, in the soil.