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President Uhuru Kenyatta has sent a message of condolence and encouragement to the family, relatives and friends of Prof. Samuel Kariuki Kabuitu who passed on November 5, 2020 after a short illness.

Samuel Kabuitu, who was a Botanist and an Environmental professor at Egerton University, was father to the Kenya Private Sector Alliance (KEPSA) Chief Executive Officer Carole Kariuki.


In his message, President Kenyatta described the late Prof. Samuel Kariuki Kabuitu as a distinguished scholar and researcher whose work has had great bearing on education, agriculture and training in the country.


“His in-depth research especially on classification and the economic value of plants greatly impacted our agricultural sector which is the backbone of our economy,” the President said.


“Certainly his knowledge in natural resource management and sustainable agriculture boosted the cultivation of indigenous crops and helped farmers to improve production,” he added.


The Head of State said the late Prof. Kabuitu’s research work will continue to be a reference point to future generations as the demand for indigenous crops continues to increase.


President Kenyatta noted that despite his great achievements and exposure to vast opportunities outside Kenya, the late Prof. Kabuitu was patriotic and opted to use his skills, knowledge and talent in serving the country instead of venturing abroad.


“Prof. Kabuitu has indeed imparted our young people with great knowledge on environmental research not only through teaching but also through his published works.


“We will forever cherish his research work on climate change adaptation and mitigation, cultivation of indigenous mushrooms to improve food security in Kenya and the use of mycorrhizae in enhancing reforestation of the Mau water complex,” said the President.


Prof. Kabuitu has authored several books and journals on  botany and environment which have continued to be a reference point to many organizations and institutions of higher learning in the country and beyond.


Who was Professor Samuel Kariuki Kabuitu?




2006 PhD in Botany Egerton University
1989 MSc. in Natural Resource Management and Sustainable


Agricultural University of Norway
1984 BSc. in Botany University of North Carolina at Chapel Hill




Taxonomy and economic values of plants



2013 Associate Professor Dept. of Biological Sciences, Egerton University
2009-2013 Senior Lecturer, Dept. of Biological Sciences, Egerton University
1990-2009 Lecturer, Dept. of Biological Sciences, Egerton University
1984-1990 Assistant Lecturer, Dept. of Biological Sciences, Egerton University




2010 to date Climate Change Adaptation and Mitigation to improve food security in Kenya
2010 to date Cultivation of indigenous mushrooms to improve food security in Kenya
2009 to date Use of mycorrhizae in enhancing reforestation of Mau Water Complex




1 J.M. Igogo, J.O. Ogendo, S.T. Kariuki and D.O. Otaye – Insecticidal, antifeedant and Reellent Effects of Tephrosia vogelii Hook, and Lantana camara L. Aqueous Crude Extracts against Golden Flea Beetle, Aphthona whitfieldi Bryant in Jatropha curcas L. Biopestic. Int. 7(2):93-103 (2011)
2 Matasyoh, J.C.; Wathuta, E.M.; Kariuki, S.T.; Chepkorir, R. (2011). Chemical composition and larvicidal activity of Piper capense essential oil against the malaria vector, Anopheles gambiae. Journal of Asia-Pacific Entomology, 14, ( 1), 26-28
3 J.O. Ogendo, Deng, A.L, Kostyovsky, M., U. Ravid, Matasyoh, J.C., Omolo, E.O., Kariuki, S.T., Kamau, A.W., Bett, P.K., and Shaaya, E. (2011). Biocontrol of selected plant essential oil constituents as fumigants of insect pests attacking stored food commodities. Baraton intedisplinary research journal (2011) (1) , 19-29
4 Kariuki, S.T., Mathooko, J.M. Macharia, J.M., Kariuki, J.M. the diversity and distribution of Girardinia species in Kenya. IJPP 2011, 2 (2), 141-148
5 Muchiri, Kariuki, S.T., Okemwa, E.K. and Kariuki, J.M. (2011). Investigation of the Physical and chemical properties of the seed oils of Girardinia Bullosa and Girardinia diversifolia (Ulticaceae). IJPP, 2011, 2 (3), 307-313
6 Kariuki S.T., Macharia J.M., Mathooko, J.M., Kariuki, J.M. (2010). The medicinal values of Girardinia diversifolia. Egerton J. Sc. Technol. (2010) 10 i-vi
7 Eunice W. Ngari, L.W. Chiuri, S.T. kariuki and S. Huckett – Ethnomediciene of Ogiek of River Njoro Watershed, Nakuru, Kenya. Ethnobotany Research and Applications (2010) : 135-152
8 Dambolena J.S., Zunino, M.P., Mwangi J.W., Thoithi, N.G., Kibwage, I.O., Mwalukumbi, J.M., and Kariuki S.T. (2010). Essential oils of Ocimum bacilicum L. and O. grattisimum L from Kenya and their inhibitory effects on growth and fummonism production by Fusarium veritcilliodes. Innovative food science and technologies 11(2010) 410-414
9 J.O. Ogendo, M. Kostyukovsky, U., Ravid, J.C. Matasyoh, A.L., Deng, E.O. Omolo, S.T. Kariuki, E. Shaaya, Bioactivity of Ocimum gratissimum L. Oil and Two of its constituents against five insects pests attacking stored food products. Journal of stored products research 44 (2008). 328-334
10 Josphat C. Matasyoh, Euty Wathuta, S.T. Kariuki, Regina Chepkorir and Judith Kavulani – Aloe plant extracts as alternative larvicides for mosquito control. African journal of biotechnology vol.7(6), 18 March, 2008




Medicinal plants and conservation


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