| Seminar/ meeting/ conference/ Public Lecture | Country | Date |
| Symposium on potato Research in the Sudan (with Dutch experts) | Sudan | 1987 |
| Symposium on potato Research in the Sudan (with Dutch experts) | Sudan | 1989 |
| Seminar on Importance of Wild Fruit Trees in the Nuba Mountains-Sudan | Sudan (in collaboration with the University of Kassel-Germany). | 2010 |
