DEPUTY VICE-CHANCELLOR

Oct. 2003 to Sep. 2013 : Associate Professor, Egerton University, Kenya
June 1999 to Sep. 2003 : Senior Lecturer, Egerton University, N Kenya
Feb. 1997 to May 1999 : Lecturer, Egerton University, Kenya
June 1993 to 1997 : Assistant Lecturer, Egerton University, Kenya
1990 to May 1993 : Teaching Assistant, Egerton University, Kenya
1994 to 1998 : Research Assistant, Cornell University, USA
Parts of 1991 to 1998 : Teaching Assistant, Cornell University, USA
External Examiner, Editor, Board Member, Reviewer, ToTs, Consultant, V

REFEREED PUBLICATIONS
1. Kiramana, J.K., Isutsa, D.K., Nyende, A.B. 2020. The analogy of simple and inter simple sequence repeat markers in the assessment of genetic diversity of pumpkin accessions in Kenya. International Journal of Biosciences, 17(3):148-163.
2. Gathungu G.K., Isutsa D.K., Omukoko C.A. and Mulambula S. Nov. 2019. Integration of farmyard manure rate and leaf harvesting frequency to enhance kale yield, net economic benefit, manure use efficiency, insect pest reduction and sack gardening adoption. Research Trends in Agriculture Sciences, 19:01-25 Chuka University Academic Staff Database © 2020 Page 6 of 460
3. Kiharason, J.W. and Isutsa, D.K. 2019. Marketability of value-added pumpkin (Cucurbita moschata Duch.) fruit in selected Kenyan markets. International Journal of Food Science and Biotechnology, 4(1): 7-13.
4. Kiharason, J. W. and Isutsa, D.K. 2019. Shelf-life of pumpkin-blended products, flour and fruit slices of different presentation formats. International Journal of Food Science and Biotechnology, 4(1):14-25.
5. Mayoli, R. N., Isutsa, D. K. and Nyende, A. B. 2019. A Protocol for Regenerating Genetically Stable Coffee (Coffea arabica L.) Plantlets through Direct Somatic Embryogenesis. International Journal of Development & Sustainability 8(9):653-664.
6. Mayoli, R.N., Isutsa, D.K. and Nyende, A.B. (2018). Coffea arabica cultivar Ruiru 11 sibs exhibit significant variation in plant regeneration through direct somatic embryogenesis. International Journal of Development and Sustainability, 7(11):2807-2820.
7. Kiramana, J. K. and Isutsa, D. K. 2019. Determination of factors influencing cultivation and utilization of pumpkins among smallholders in Kakamega and Nyeri Counties in Kenya. East African Agricultural and Forestry Journal. 83(1):34-48. DOI: 10.1080/00128325.2018.1516419.
8. Mayoli, R. N., Isutsa, D. K., Nyende, A. B. and Mweu, C. M. 2018. Effective regeneration of high value coffee plantlets through direct somatic embryogenesis using synthetic equivalents of characterised endogenous biochemicals. Global Journal of Bio-science and Biotechnology 7(3)425-434.
9. Mayoli, R. N., Isutsa, D. K., Nyende, A. B. and Mweu, C. M. 2018. Relationships of selected endogenous factors associated with direct somatic embryogenesis of coffee (Coffea arabica L.). Journal of Advances in Agriculture, 8(1):1309-1338. DOI: https://doi.org/10.24297/jaa.v8i1.7378
10. Mayoli, R. N., Isutsa, D. K., Nyende, A. B. and Mweu, C. M. 2018. Evaluation of endogenous phytocomponents and amino acids associated with direct somatic embryogenesis of coffee (Coffea arabica L.). Journal of Advances in Agriculture, 8(1):1293-1308. DOI: https://doi.org/10.24297/jaa.v8i1.7377
11. Mayoli, R. N., Isutsa, D. K., Nyende, A. B. and Mweu, C. M. 2018. Evaluation of endogenous sugars, chlorogenic acid and caffeine associated with direct somatic embryogenesis of coffee (Coffea arabica L.). Journal of Advances in Agriculture, 8(1):1271-1292. DOI: https://doi.org/10.24297/jaa.v8i1.7376
12. Kiramana, J. K. and Isutsa, D. K. 2018. Food and income provision influence production of pumpkins in Kakamega and Nyeri in Kenya. International Journal for Scientific Research, 3(1):36-56.
13. Kiramana, J.K. and Isutsa, D.K. 2018. Genetic diversity of pumpkin accessions in Kenya revealed using morphological characters, diversity index, CATPCA and factor analysis. International Journal for Scientific Research, 3(1):57-79
14. Kiramana, J.K. and Isutsa, D.K. 2018. Multivariate analysis techniques reveal significant morphogenetic variability in pumpkin landraces in Kenya. International Journal of Biosciences 13(1): 298-319.
15. Isutsa, D. K., Munyoro, D. W. and Gaoqiong, L. 2017. Effects of mineral nutrient source and leaf harvesting intensity on pumpkin (Cucurbita moschata Duch.): 1. Edible growth and quality components. Journal of Environmental Sustainability Advancement Research, 3:32-41.
16. Isutsa, D. K., Munyoro, D. W. and Gaoqiong, L. 2017. Effects of mineral nutrient source and leaf harvesting intensity on pumpkin (Cucurbita moschata Duch.): 2. Vegetative and reproductive growth components. Journal of Environmental Sustainability Advancement Research, 3:42-51.
17. Kiramana, J. K. and Isutsa, D. K. 2017. First detailed morphological characterisation of qualitative traits of extensive naturalized pumpkin germplasm in Kenya. International Journal of Development and Sustainability, 6(7):500-525.
18. Kiramana, J. K. and Isutsa, D. K. 2017. Documentation of indigenous traditional knowledge determining cultivation and utilization of pumpkins in Kenya. Journal of Environmental Sustainability Advancement Research, 3:17-31.
19. Isutsa, D. K. and Mwaura, M. M. 2017. Effects of irrigation rate and leaf harvest intensity on multipurpose pumpkin (Cucurbita moschata Duch.) growth and quality. International Journal of Development and Sustainability 6(9):1121-1141
20. Kiramana, J. K. and Isutsa, D. K. 2017. Morphological characterization of naturalised pumpkin (Cucurbita moschata (Lam.) Poir.) accessions in Kenya. African Journal of Horticultural Science, 12:61- 83.
21. Kiharason, J. W. Isutsa, D. K. and Ngoda, P. N. 2017. Effect of drying method on nutrient integrity of selected components of pumpkin (Cucurbita moschata Duch.) fruit flour. ARPN Journal of Agricultural and Biological Sciences, 12(3): 110-116. Chuka University Academic Staff Database © 2020 Page 7 of 460
22. Kiramana, J. K., Isutsa, D. K and Nyende, A. B. 2017. Qualitative, quantitative and quality variation of naturalized pumpkin accessions in mother and baby trials in Kenya. Journal of Agricultural and Biological Sciences 12(2):65-77.
23. Kiharason, J. W., Isutsa, D. K. and Ngoda, P. N. 2017. Evaluation of sensory acceptability of bakery products prepared from wheat and pumpkin composite flour. International Journal of Science and Nature. 8[1]: 1-7.
24. Kiharason, J. W., Isutsa, D. K. and Ngoda, P. N. 2017. Nutritive value of bakery products prepared from wheat and pumpkin composite flour. Global Journal of Bio-science and Biotechnology, 6[1]: 96-102.
25. Kiramana, J.K., Isutsa, D.K. and Nyende, A. B. 2017. Fluorescent SSR markers and capillary electrophoresis reveal significant genetic diversity in naturalized pumpkin accessions in Kenya. Global Journal of Bio-science and Biotechnology, 6[1]:34-45.
26. Kiramana, J. K, Isutsa, D. K and Nyende, A. B. 2016. Participatory germplasm conservation and seed production of naturalized pumpkin landraces in Kenya. International J. Science and Nature. 7[4]:756- 764.
27. Kiramana, J. K. and Isutsa, D. K. 2016. Pumpkin accessions in Kenya exhibit significant variation in quantitative characters based on baby trials conducted in Kakamega and Nyeri, Kenya. Journal of Chemical, Biological and Physical Sciences, 7(1):060-076.
28. Kiramana, J. K., Isutsa, D. K. and Nyende, A. B. 2016. Evaluation of quantitative yield performance of pumpkin accessions in Kenya using mother trials. International Journal of Advanced Biological Research 6(4):439-447.
29. Gathungu, G. K., Aguyoh, J. N. and Isutsa, D. K. 2016. Seed potato growth, harvest index and net economic benefit improvement through irrigation water, nitrogen and phosphorus management. American Journal of Agricultural Science and Technology, 4 (1):9-24.
30. Gathungu, G. K., Aguyoh J. N. and Isutsa, D. K. 2016. Improving seed potato leaf area index, stomatal conductance and chlorophyll accumulation efficiency through irrigation water, nitrogen and phosphorus nutrient management. Journal of Agricultural Studies 4(1):127-141.
31. Kiharason, J. W., Isutsa, D.K. and Ngoda, P.N. 2015. Contribution of multi-purpose pumpkin (Cucurbita moschata Duch.) to the economy of selected Kenyan small-scale households. Journal of Environmental Sustainability Advancement Research, 1:8-14.
32. Gathungu, G. K., Aguyoh, J. N., Isutsa, D. K. 2015. Optimization of seed potato specific density, starch and dry matter contents and tuberization capacity of resultant plants through integrated irrigation, nitrogen and phosphorus management. Journal of Plant Sciences, 3(4):225-233.
33. Gathungu, G. K., Aguyoh, J. N. and Isutsa, D. K. 2014. Effects of integration of irrigation water and mineral nutrient management in seed potato (Solanum tuberosum L.) production on water, nitrogen and phosphorus use efficiencies, Chapter 15:171-183. In: Walter Leal Filho, Antony O. Esilaba, Karuturi P.C. Rao and Gummadi Sridhar (Eds.). Adapting African Agriculture to Climate Change: Transforming Rural Livelihoods, Springer International Publishing, Switzerland. Print ISBN 978-3-319-12999-0. Online ISBN 978-3-319-13000-2. 2015. DOI: 10.1007/978-3-319-13000-2_15.
34. Mwaura, M. M., Isutsa, D. K., Ogweno, J. O. and Kasina, M. 2014. Interactive effects of irrigation rate and leaf harvest intensity on edible leaf and fruit yields of multipurpose pumpkin (Cucurbita moschata Duchesne). International Journal of Science and Nature 5(2):199-204.
35. Isutsa, D. K. and Merwin, I. A. 2014. Nematodes and fungi associated with apple replant disorder in sampled New York State orchards. Global Journal of Biosciences and Biotechnology 3(2):174-180.
36. Kiharason, J. W. and Isutsa, D. K. 2014. Potential of orange-fleshed sweet potato in increasing vitamin A dietary intake in up to 60-month-old children in Laikipia, Kenya. Journal of Chemical, Biological & Physical Sciences 4(2):1188-1195.
37. Gathungu, G. K., Aguyoh, J. N. and Isutsa, D. K. 2013. Optimization of seed potato (Solanum tuberosum L.) tuber yield and size distribution through integrated irrigation water, nitrogen and phosphorus mineral nutrient application. American Journal of Experimental Agriculture 4(3): 349-361, 2014.
38. Gathungu, G.K., Aguyoh, J. N. and Isutsa, D. K. 2013. Integration of irrigation water and mineral nutrient supply effects on firmness and total soluble solids content of seed potato (Solanum tuberosum L.). East African Agricultural and Forestry Journal 79(1):17-21.
39. Isutsa D. K. and Mallowa, S. O. 2013. Increasing leaf harvest intensity enhances edible leaf vegetable yields and decreases mature fruit yields in multi-purpose pumpkin. Journal of Agricultural & Biological Sciences 8(8):610-615. Chuka University Academic Staff Database © 2020 Page 8 of 460
40. Karanja, B. K., Isutsa, D. K. and Aguyoh, J. N. 2013. Influence of Biozyme® on chlorophyll content, flowering and physiological maturity of potato (Solanum tuberosum L.) cultivars. International Journal of Current Agricultural Research 1(9):47-51.
41. Karanja, B. K., Isutsa D. K. and Aguyoh J. N. 2013. Climate change adaptation of potato (Solanum tuberosum L.) 1: Factors influencing extent of Biozyme® usage in production of potatoes in Mau Narok District of Kenya. Journal of Chemical, Biological & Physical Sciences 3(3):2012-2018.
42. Karanja, B. K., Isutsa, D. K. and Aguyoh J. N. 2013. Climate change adaptation of potato (Solanum tuberosum L.) 2: Influence of Biozyme® rate on potato growth and development. J. Chemical, Biological & Physical Sci. 3(3):2019-2031.
43. Karanja, B. K., Isutsa, D. K. and Aguyoh, J. N. 2013. Climate change adaptation of potato (Solanum tuberosum L.): Influence of Biozyme® rate on potato yield, quality and mineral nutrient uptake. International Journal of Advanced Biological Research 3(3):366- 373.
44. Karanja, B. K., Isutsa D. K. and Aguyoh, J. N. 2013. Curing reduces postharvest deterioration of Biozyme® produced potatoes (Solanum tuberosum L.). Global Journal of Biosciences and Biotechnology 2(3):353-360.
45. Gathungu, G. K., Aguyoh, J. N. and Isutsa, D. K. 2013. Influence of irrigation water, nitrogen and phosphorus nutrient application on relative weight loss and sprouting characteristics of seed potato tubers after storage. Sustainable Agriculture Research 2(4):30-38.
46. Gaturuku, J. K., Isutsa, D. K. and Aguyoh, J. N. 2012. Irrigation rate and mulch type significantly affect some physiological processes of purple passion fruit (Passiflora edulis f. edulis Sims.) under drought stress. International Journal of Advanced Biological Research 2(1):46-52.
47. Mayoli, R. N. and Isutsa, D. K. 2012. Relationships of light intensity and temperature with growth and development of preconditioned and shaded ranunculus plants under high altitude tropical conditions. International Journal of Advanced Biological Research 2(1):24-29.
48. Gaturuku, J. K., Isutsa, D. K. and Aguyoh, J. N. 2011. Irrigation rate and mulch type significantly affect growth and flowering of purple passion fruit (Passiflora edulis f. edulis Sims). African J. Horticultural Science 5:61-69.
49. Mallowa, S. O., Isutsa, D. K., Kamau, A. W. and Legg, J. P. 2011. Effectiveness of phytosanitation in cassava mosaic disease management in a post-epidemic area of western Kenya. Journal of Agricultural and Biological Sciences 6(7):8-15.
50. Gaturuku J. K. and Isutsa D. K. 2011. Irrigation and mulch significantly enhance yield but not quality of purple passion fruits. ARPN Journal of Agricultural and Biological Science. 6(11):47-53.
51. Isutsa, D. K., Odongo, T. and Aguyoh, J. N. 2011. Response of strawberry quality and profitability to farmyard manure and triple super phosphate under tropical high altitude conditions. Journal of Agriculture, Science and Technology 13(1):3-17.
52. Mayoli, R. N. and Isutsa, D. K. 2010. Effects of pre-conditioning temperature and shade on growth, yield and quality of ranunculus cut flower under high altitude tropical conditions. UNISWA Research Journal of Agriculture, Science and Technology 13(1):20-29.
53. Mayoli, R. N., Isutsa, D. K. and Tunya, G. O. 2009. Growth of ranunculus cutflower under tropical high altitude conditions. 2: Effects of GA3 and shade on light intensity and temperature modification. African Journal of Horticultural Science 2:29-42.
54. Mayoli, R. N., Isutsa, D. K. and Tunya, G. O. 2009. Growth of ranunculus cutflower under tropical high altitude conditions. 1: Effects of GA3 and shade. African Journal of Horticultural Science 2:13-28
55. Ogendo, R. O., Isutsa, D. K. and Sigunga, D. O. 2008. Interaction of farmyard manure and plant population density effects on soil characteristics and productivity of mulched strawberry in a tropical climate. African Journal of Horticultural Science 1:100-115.
56. Isutsa, D. K. 2008. Farmyard manure and plant population density influence soil fertility and productivity of non-mulched strawberry in a tropical climate. Egerton Journal of Science and Technology 8:75-87.
57. Odongo, T., Isutsa, D. K. and Aguyoh, J. N. 2008. Effects of integrated nutrient sources on growth and yield of strawberry grown under tropical high altitude conditions. African Journal of Horticultural Science 1:53-69.
58. Isutsa, D. K. 2006. Effects of mulch and cultivar on strawberry productivity under tropical highland conditions. Tanzania Journal of Agricultural Sciences 7(2):125-132.
59. Mallowa, S. O., Isutsa, D. K., Kamau, A. W., Obonyo, R. & Legg, J. P. 2006. Current characteristics of cassava mosaic disease in post-epidemic’ areas increase the range of possible management options. Annals of Applied Biology 149(2)137-144. Chuka University Academic Staff Database © 2020 Page 9 of 460
60. Ngugi, G. M., Isutsa, D. K. and Achwanya, O. S. 2006. Effect of gibberellic acid 3 in maintaining quality of harvested purple passion fruits (Passiflora edulis var. edulis Sims.). Egerton Journal: Sci. & Tech. 6:130-142.
61. Isutsa, D. K. 2006. Performance of micropropagated and conventional passion fruit (Passiflora edulis Sims.) varieties in three contrasting agroecological zones. Egerton Journal: Science and Technology Series. 6:87-102.
62. Koech, A. A., Isutsa, D. K. and Wu, Q. 2005. Explants, hormones and sucrose influence in vitro shoot regeneration and rooting of calla lily (Zantedeschia albomaculata Spreng.). Journal of Agriculture, Science and Technology 7(1):53-66.
63. Isutsa, D. K. 2004. Rapid micropropagation of passion fruit (Passiflora edulis Sims.) varieties. Scientia Horticulturae 99(3-4):395-400.
64. Bore, J. K., Isutsa, D. K., Itulya, F. M. and Ng’etich, W. K. 2003. Effect of pruning time and resting period on total non-structural carbohydrates, regrowth, and yield of tea (Camellia sinensis L.). Journal of Horticultural Science and Biotechnology 78(2):272-277.
65. Isutsa, D. K. and Liu Gaogiong. 2003. Vegetable crop production through grafting. Horticultural News 28:26-32.
66. Bore, J. K., Isutsa, D. K., Itulya, F. M. and Ng’etich, W. K. 2002. Effect of time of pruning and lungs on non-structural carbohydrates of tea (Camellia sinensis L.). Tea Journal 23(1):12-21.
67. Isutsa, D. K. and Merwin, I. A. 2000. Malus germplasm varies in resistance or tolerance to apple replant pathogens in a mixture of New York orchard soils. HortScience 35:262-268.
68. Isutsa, D. K., Pritts, M. P. and Mudge, K. W. 1998. A protocol for rooting and growing apple rootstock microshoots. Fruit Varieties Journal 52(2):107-116.
69. Isutsa, D. K., Pritts, M. P. and Mudge, K. W. 1994. Rapid propagation of blueberry plants using ex vitro rooting and controlled acclimatization of micropropagules. HortScience 29(10):1124-1126.
BOOKS PUBLISHED
1. Isutsa, D. K. October, 2012. Essentials in Deciduous Fruit Production in the Tropics. Lambert Academic Publishing, AV Akademikerverlag GmbH & Co. KG, Heinrich-Böcking-Str. 6-8, 66121, Saarbrücken, Germany. ISBN: 978-3-659-27226-4
2. Isutsa, D. K. September, 2012. Production of Passion Fruits from Seed- and Micro-propagated Plants. Lambert Academic Publishing, AV Akademikerverlag GmbH & Co. KG, Heinrich-Böcking-Str. 6-8, 66121, Saarbrücken, Germany. ISBN: 978-3-8484-9331-9
3. Mudge, K. W., Mwaka, A., Isutsa, D. K., Musoke, R., Foster D. and Ngoda, B. J. M. 1992. Plant Propagation: A Teaching Resource Packet with Emphasis on Agroforestry and Fruit Trees in East Africa, Cornell University, Ithaca, New York, USA TECHNICAL BULLETINS/MANUALS PUBLISHED
4. Isutsa, D. K. (Editor). 2017. Field/Industrial Attachment, Teaching Practice and Clinical Placement (Practicum) Manual. Chuka University, Chuka, Kenya, 200 pp.
5. M. M. Mwaura, D. K. Isutsa, J. O. Ogweno, M. Kasina. 2015. Irrigation and Defoliation Management in Pumpkin (Cucurbita moschata Duch.). Pumpkin Information Bulletin Series, Number 1, January, 2015.
6. D. W. Munyoro, D. K. Isutsa, L. Gaoqiong. 2015. Mineral Nutrition and Defoliation Management in Pumpkin (Cucurbita moschata Duch.). Pumpkin Information Bulletin Series, Number 2, January, 2015.
7. J. K. Kiramana, D. K. Isutsa, A. B. Nyende. 2015. Diversity of the Pumpkins Grown and Utilised in Kenya. Pumpkin Information Bulletin Series, Number 3, January, 2015.
8. J. W. Kiharason, D. K. Isutsa, P. N. Ngoda. 2015. Pumpkin (Curcubita moschata Duch.) Fruits Utilization in Kenyan Small-scale Households. Pumpkin Information Bulletin Series, Number 4, January, 2015.
9. Isutsa, D. K. (editor). 2002. Horticultural crop production and post-harvest technology handbook. Department of Horticulture, Egerton University, Njoro (Manual).

RESEARCH, DEVELOPMENT AND TRAVEL GRANTS
1. 2021-2024: Establishment of UNESCO Chair on “Conservation of Environment and Water for Sustainable Development (CEWSD)” in Chuka University. Role: Project Initiator.
2. 2020: Funded by Chuka University for Audit, Governance and Risk Management training from 12th to 14 th February, 2020 at Strathmore University, Nairobi, Kenya.
3. 2019: Funded by Chuka University Internal Research Fund for “Optimization of productivity, physiology and quality of multi-purpose pumpkin (Cucurbita moschata Duchesne) using integrated nitrogen, mulch and gibberellic acid management”.
4. 2018: Funded by the National Research Fund for Establishment of State-of-the-art instruments for Academic and Research Excellence Centre (AREC) for research in Environmental Conservation.
5. 2018: Funded by Chuka University for Corporate Governance and Strategic Management training from 21st to 23rd May, 2018 at Kenya School of Government Matuga Campus, Kwale, Mombasa, Kenya.
6. 2017: Funded by Chuka University for 3 rd International Science, Technology and Innovation Centre (ISTIC) Biennial International Conference on Women in Science, Technology and Innovation (STI) themed “Innovative Solutions by Women for UN Sustainable Development Goals 2016-2030” from 14th and 17th May, 2017 at Seri Pacific Hotel Kuala Lumpur, Jalan Putra, 50746 Kuala Lumpur, Malaysia
7. 2017: Funded by Chuka University for Higher Education Institutes Management training From 25th January to 11th February, 2017 at Galilee International Management Institute, Israel.
8. 2014-2015: Funded by KAPAP for 9 research collaborators in “Enhancing production, value addition and marketing of indigenous vegetables, french beans and mushrooms among smallholder farmers in Kenya Chuka University Academic Staff Database © 2020 Page 5 of 460
9. 2011-2014: Funded by KAPAP for 9 research collaborators in “Enhancing production, value addition and marketing of indigenous vegetables, french beans and mushrooms among smallholder farmers in Kenya
10. 2014: Funded by the National Commission Science, Technology and Innovation for “Diversification of processing and utilisation of dual: purpose pumpkin (Cucurbita moschata Duchesne) in Kenya.”
11. 2014: Determination and Evaluation of Selected Endogenous Factors Associated with Somatic Embryogenesis of Coffee (Coffea arabica L.) Cultivar Ruiru 11
12. 2014-2017 Funded by Chuka University Internal Research Fund for “Effects of farmyard manure and harvesting frequency on insect pests, leaf yield, and longevity of kitchen garden kales”.
13. 2013: Funded by Chuka University for Smart Partnership International Dialogue themed “Leveraging Technology for Africa’s Socio-economic Transformation: The Smart Partnership Way” 28th June -1st July 2013, Dar es Salaam, Tanzania
14. 2011: Funded by Chuka University for Higher Education Management Training For Managers Of Newly Established University Colleges And Campuses In Kenya by German Academic Exchange Service (DAAD) under the Dialogue on Innovative Higher Education Strategies (DIES), together with the University of Kassel, Germany, REAL DIES Alumni Network in collaboration with the National Council of Science and Technology, Kenya held at Kenyatta University from 19th -21st May 2011), Pwani University in Kilifi, from 25th -28th October 2011, and Multi-Media University College of Kenya from 24th – 27th April 2012.
15. 2010: Funded by the National Council for Science & Technology (2010) for “Determination of combined effects of N, P and irrigation water in maximizing seed potato tuber production”
16. 2008-2010: Funded by Egerton University. Development of novel protocols for micropropagation of potato (Solanum tuberosum L.) planting materials in Kenya.
17. 2005-2006: Funded by Egerton University. Strawberry productivity versus integrated nutrient management and plant density.
18. 2004-2006: Funded by the Commonwealth Scholarships Commission. Advanced plant biotechnology techniques at University of Reading, UK.
19. 2001-2004: Funded by the Rockefeller Foundation). Rapid micropropagation and field performance of passion fruits in Kenyan highlands. Collaborating Institutions: Egerton, KARI: Njoro, Ministry of Agriculture, St. Clare Resource and Training Centre, & Baraka Agricultural College.
20. Funded by KARI, MoA, and the World Bank. (1999). On-farm adaptability trials and improvement of cultural practices and of bananas and plantains in the Kenyan highlands by KARI-Njoro and Egerton University.
21. Funded by Arthur Boller Research Grant in (1996) for Ph.D. dissertation research
22. Funded by Arthur Boller Research Grant in (1993) for M.Sc. thesis research.
23. In 2005 to attend the Society for Experimental Biology Conference at Sheffield University, UK.
24. In 2003 to Sokoine University, Tanzania as exchange staff. Presented a seminar paper.
25. In the US in 2003 to the 3rd Sustainable Agriculture Workshop at Maseno. Presented a paper.
26In 2002 to the 2nd Sustainable Agriculture Workshop at JKUAT. Presented 2 papers.
27. In 1999 to the UK on the Writtle College and Egerton University Higher Education Linkage.
28. In 1999 to the 3rd Annual National Horticulture Seminar at JKUAT. Presented a paper.
29.In 1998 to the 95th Annual Conference of ASHS held in Charlotte, NC. Presented a paper.
30. In 1997 to the 94th Annual Conference of the ASHS in Salt Lake City, Utah. Presented a paper.
31In 1996 to the 93rd Annual Conference of the ASHS in Lexington, Kentucky. Presented a poster.
32.In 1995 to the 92nd Annual Conference of the ASHS, and the 40th Congress of the Canadian Society for Horticultural Science held in Montreal

RESEARCH INTERESTS
Efficient horticultural production, value addition and farm management technologies. Plant biotechnology applications to improve crop productivity and food security.
PATENTS
KE/U/2019/1072 (KE/P/2018/2953) – Direct Somatic Embryogenesis of Genetically Stable Coffee Plantlets Chuka University Academic Staff Database © 2020 Page 10 of 460
KE/U/2018/1037 (KE/P/2018/2954) – Use of Endogenous Substances Synthetic Equivalents to Regenerate Coffee Plantlets
KE/U/2018/1036 (KE/P/2018/2955) – Processing Enhanced Solar Drier Pumpkin Fruit Flour for Blending into High Fibre Nutrient Dense Low Calorie Food Snacks
POSTGRADUATE SUPERVISION
1. Efficacy of gibberellic acid in controlling pathological decay and maintaining post-harvest quality of passion fruits (Passiflora edulis var. edulis Sims.).
2. Effects of pruning time, lungs, resting period and total non-structural carbohydrate reserves on regrowth and yield of tea (Camellia sinensis [L.] O. Kuntze
3. Explants and media affect in vitro regeneration of Zantedeschia albomaculata. 4. Ms. Salome M. Obura. Management of cassava mosaic disease in western Kenya.
5. Productivity of strawberry variety Fern as influenced by phosphatic fertiliser and farmyard manure.
6. Growth, yield, and fruit quality of strawberry variety Cambridge Favourite as influenced by plant density and farmyard manure
7. Effect of gibberellic acid, shade and vernalization on productivity of Ranunculus asiaticus grown in the Kenyan Highlands.
8. Influence of Biozyme ® foliar feed on growth and postharvest attributes of potato (Solanum tubersosum L).
9. Effects of defoliation and irrigation water management effects on multi-purpose pumpkin fruit and leaf yields in the Kenyan highlands.
10. Investigation of defoliation and mineral nutrient management effects on multipurpose pumpkin fruit and leaf yields.
11. Determination of combined effects of nitrogen, phosphorus and irrigation water in maximizing seed potato tuber production.
12 Collection, characterisation, evaluation, and multiplication of clean seeds of multipurpose pumpkin (Cucurbita moschata) landraces in Kenya.
13. Identification and evaluation of selected endogenous factors associated with somatic embryogenesis of coffee (Coffea arabica) Cultivar Ruiru 11.
14. Diversification of processing and utilisation of multi-purpose pumpkin (Cucurbita moschata) in Kenya.
15. Optimization of productivity, physiology and quality of multi-purpose pumpkin (Cucurbita moschata Duchesne) using integrated nitrogen, mulch and gibberellic acid management