Appointment as External Examiner for MSc and PhD
- External Examiner, PhD thesis, University of Karachi, Pakistan, 2024.
- External Examiner, MSc dissertation, University of Witwatersrand, South Africa, 2019.
- External Examiner, MSc dissertation, University of Pretoria, South Africa, 2019
- External Examiner, PhD thesis, University of Pretoria, South Africa. 2017
- External Examiner, PhD thesis, Nelson Mandela Metropolitan University, Port Elizabeth, South Africa. 2016
- External Examiner, MSc dissertation, University of Pretoria, South Africa. 2016
- External Examiner, MSc dissertation, University of Pretoria, South Africa. 2014
- External Examiner, PhD thesis, Durban University of Technology, South Africa. 2013
- External Examiner, 2 MSc dissertations, Walter Sisulu University, South Africa. 2013
- Eternal Examiner, PhD thesis, University of Pretoria, South Africa, 2012
- Eternal Examiner, PhD thesis, University of Pretoria, South Africa. 2011
- External Examiner, MSc dissertation, University of Limpopo, South Africa. 2010
- External Examiner for Botany courses in department of Biology in the Faculty of Science and Technology, National University of Lesotho, Lesotho. 2009
- Appointed as External Assessor for the Department of Plant Biology and Biotechnology, University of Benin, Benin City, Nigeria. 2009
- External Examiner, PhD thesis, University of Limpopo, South Africa. 2009
- External Examiner, MSc dissertation, University of Pretoria, South Africa. 2008.
- External Examiner, MSc dissertation, University of Pretoria, South Africa. 2007.
- External Examiner, MSc dissertation, University of Witwatersrand, Johannesburg. 2007
- External Examiner, PhD thesis, University of Pretoria, South Africa. 2007.
- External Examiner, MSc dissertation, University of Witwatersrand, Johannesburg. 2006
- External Examiner, MSc dissertation, University of Limpopo, South Africa. 2006
- External Examiner, PhD thesis, Manonmanian Sundaranar University, India. 2006.
- External Examiner, PhD thesis, University of Pretoria, South Africa. 2004
- External Examiner, MSc dissertation, SAPES THRUST, Zimbabwe. 2003
- External Examiner for PhD thesis, The Gandhigram Rural Institute Deemed University, Tamil Nadu, India. 2003
- Visiting Professor of Botany, National University of Lesotho, Roma, Lesotho. 2002
- External Examiner for MSc dissertation, Faculty of Agriculture and Biological Sciences, University of Pretoria, South Africa. 2002.
- External member as expert in Botany on the panel of professorial appointment for the University of Venda and Technology, South Africa. 2002
- External Examiner for MSc dissertation, Faculty of Health Sciences, University of Durban-Westville, Durban, South Africa. 2001