| Dr. C. Potchanasin | Kasetsart University, Bangkok | 18.04.12 - 27.04.12 |
| Péter Jobbágy | University of Debrecen, Hungary | 23.04.12 - 04.05.12 |
| Beáta Blaskó | University of Debrecen, Hungary | 15.07.12 - 15.08.12 |
| Eyassu Defabachew | Haramaya University, Ethiopia | 03.11.12 - 29.12.12 |
| Lui Wenping | China Agriculture University Beijing | 03.11.12 - 29.12.12 |
| Lina Ding | China Agriculture University Beijing | 04.11.12 - 20.11.12 |
| Qian Zhang | China Agriculture University Beijing | 29.12.12 - 01.03.13 |
| Prof. Dr. Dr. h.c. Hiroshi Yokogawa | Kyushu Kyoritsu Universität, Japan | 18.08.12 - 05.08.12 |
