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The aim studyis using eco-friend materials and cheap to create MgO nanoparticles ,the synthesis of oxide nanoparticles with the use of plant extract is a promising alternative to traditional and redchemical methods. The biologically synthesized MgO nanoparticles were characterized by UV–Visible spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM). This research dealt with effect of four concentrations of MgO nanoparticles chosen (0,100, 200,300 ) ppm with three methods (foliar plant ,seed soaking ,foliar + seed soaking) on the carbohydrate and protein content in the TriticumaestivumL.which was two varieties (rasheed and abaa 95) . The results showed increase in all vital indicators remember previous when exposed to the MgO Nanoparticles in comparative to the control treatment which gave the best carbohydrate andprotein content for foliar plants & seeds soaking treatment of the wheat plant . In spite of the magnesium is important to plant, this study found that when its existence in nanoparticles form may behave much better .