2007-2008                   Postdoctoral stay in Kassel University, Germany. Research project ‘Growth, physiology and salt tolerance of two underutilized fruit crops Grewia tenax (Forssk.) Fiori and Ziziphus spina-christi (L.) Willd’

2005-2006                  Head Department of Horticulture, Faculty of Agriculture,                                       University of Khartoum, Sudan