| 1999 - 2003 |
Head - Department of Field Crops, Vegetables and Genetics, Faculty of Agricultural, Food and Environmental Quality Sciences, Rehovot, Israel. |
| 2001 - 2002 |
Director - the Otto Warburg Minerva Center for Agricultural Biotechnology. |
| 2002 (Oct) - 2003 (Mar) |
Head - The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture. |
| 2003 - 2009 |
Director - the Otto Warburg Minerva Center for Agricultural Biotechnology |
| 2005-2006 | Chairman of the Faculty Research Committee. |
| 2006-2008 |
Chairman of the Departmental Screening Committee Plant Sciences/Plant Protection. |
| 2008 - 2012 |
Vice Dean for Research, The Robert H. Smith Faculty of Agriculture, Food and Environment. |
| 2013 - 2017 |
Dean, The Robert H. Smith Faculty of Agriculture, Food and Environment. |