The Ph.D. Thesis submitted by Mr. Hosam Eldeen Ahmed Thabet , Agronomy Department, entitled:   "Effect of Potassium and Boron Fertilization on Productivity of Some Maize Cultivars at New Valley"   Under supervision of: 1.    Prof. Ragb Ahmed Daood 2.    Prof. Mahmoud Ahmed Abd-Elgawad 3.    Dr. Fathi Mohamed Fathi   Would be discussed at Tuesday 20/11/2012 on 12.00 o’clock in Department Hall