د.ابراهيم سالم شعبان2026-06-102026-06-10https://dspace.academy.edu.ly/handle/123456789/2269Foliar fertilization has potential for an important role in potato production .Potato plants foliar treated with Unigreen (containing macro and micronutrients)2.5 g/l and Solu Potash (50% K2O) 3.0 g / l gave higher total yield and higher number of marketable tubers per plant and total number of tubers per plant (Abdul Rasool et al.,2010). Foliar treated of potato plants with humus gave higher number of stems, plant height, mean tuber weight and total yield (Kadum, 2011).Yeast is used as a kind of biofertilizers or as a simulative effect in soil fertilization or in foliar application on the shoots of vegetable crops (El –Ghamriny et al.,1999).This is because its content of many nutrient elements and being productive compounds of semi growth regulator compound like auxins, gibberellins and cytokinins (Glick, 1995). Moreover, Gomaa et al., (2005) reported that inclusion the foliar application of yeast to the organic fertilization significantly increased potato yield in comparison with either the positive control or the corresponding treatments.The Influence of Different Sources of Fertilizers