| Training | Institution / Country | Date |
| Production and quality control of Legume Inoculants | Cairo Microbiological Resource Center (Cairo MIRCEN), Egypt | 1988 |
| Soil and plant tissue analysis | International Institute for Tropical Agriculture (IITA), Ibadan, Nigeria, | 1989 |
| Lichen secondary metabolites, Isolation and purification | Department of Botany, Smithsonian Institution, Washington D. C. | 1997 |
| Chemistry of lichen substances | Department of Biology, Faculty of Science, University of Padova,Padova, Italy | 1999 |
| UNESCO workshop on: Innovative Methods for Teaching Sciences at the University Level | Sana’’a University, Sana’’a, Yemen | 2005 |
