Prof. Dr. Nabil Muhammad Amin Al-Imam (a lecturer in the Department of Horticulture and Landscape Architecture) participated in the discussion committee for a doctoral thesis at the Faculty of the Agriculture / University of Tikrit, for the student (Riad Daoud Khadr). The thesis is entitled (The effect of sulfur and super docson on the growth and outcome of the grape varieties Halawani and Kamali).