The effect of different levels(5,7.5 and 10 ml/L) of EM1 on potato growth and productivity was studied, using complete randomized design with 4 treatments. Potato plant (cv.spunta) were grown in nursery garden of tishreen university 2016. The results showed that foliar spray of potato plants with EM1 had a positive effect on studied parameters . Spraying plants with 10 ml/L of EM1 gave a significant increase in leaf area, plant high, number and weight of tubers and total yield.