Makhoul, G.M., Naddaf, M., Zidan, A. and Abu Alshamlat, R. 2020. Influence of Foliar Application of Boron , Zinc and Humic acid on production of Olive fruit (khodeiry variety), quality of fruit and content of oil. Tishreen University Journal -Biological Sciences Series. 42, 1 (Mar. 2020).