Dr. Ibrahim Macharia Ndegwa

Position: Senior Lecturer
Department: Agricultural Economics
Contact Address: P.O. Box 43844 , 00100 Nairobi
Area of Specialization: Agricultural and environmental economics,Impact assessment of agricultural technologies and innovations,Agribusiness strategy and value chain development
Research Interests: Social- economic and environmental impact of agricultural technologies, externalities of development project, the impact of climate change and agricultural sustainability
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Research Interests:

Social-economic and environmental impact of agricultural technologies
Development and management of circular agrifood value chains
Environment and Natural Resource Economics.
Externalities of agricultural production and development projects
Agricultural value chain analysis and market systems development
Gender-responsive agricultural innovations and technology adoption
Food security, agribusiness innovation, and rural transformation

PUBLICATIONS

Referred Journals

Mulungu, K., Macharia, I., Abro, Z., Kassie, M., and Tanga, C. (2023). Entomophagy in western Kenya: consumption patterns and the role of psychological and socio-cultural factors. Journal of Insects as Food and Feed(published online ahead of print 2023). https://doi.org/10.1163/23524588-20220143.
Awuor, F.J., Macharia, I., and Mulwa, R. (2023) Adoption and intensity of integrated agriculture aquaculture among smallholder fish farmers in Kenya. Front. Sustain. Food Syst. 7:1181502. doi: 10.3389/fsufs.2023.1181502
Eze, A.V., Macharia, I. and Ngare, L. (2023). Economic viability of value-added cashew products processed in Southeast zone, Nigeria. Heliyon 9(4):e12791. DOI: 10.1016/j.heliyon.2022.e12791.
Ajer, B., Ngare, L. and Macharia, I. (2023), "Drivers of innovation in the agro-food micro, small and medium enterprises of Uganda", Journal of Agribusiness in Developing and Emerging Economies, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/JADEE-09-2022-0206
Midingoyi, S G and Kassie, M B and Affognon, H D and Macharia, I and LeRu, B (2023) Estimating the impact of biological control of maize stemborers on productivity and poverty in Kenya: a continuous treatment approach. Environment, Development and Sustainability. 01-22. ISSN 1573-2975.
Abro Z, Macharia I, Mulungu K, Subramanian S, Tanga CM and Kassie M (2022) The potential economic benefits of insect-based feed in Uganda. Front. Insect Sci. 2:968042. doi: 10.3389/finsc.2022.968042
Eze, A.V., Macharia, I., Ngare, L., 2022. Factors Influencing Value Addition to Cashew Products Processed in the South-East Zone, Nigeria: A Multinomial Logistic Regression Approach. European Journal of Agriculture and Food Sciences 4(1):61-71.DOI: 10.24018/ejfood.2022.4.1.448.
Willy, D.K., Macharia, I., Marechera, G., Muinga, G., Mugo, S., Rotich, R., Oniang'o, R. K., Karanja, J., Obunyali, Caleb O., Oikeh, S. O., 2021. Economic impact of DroughtTEGO® hybrid maize in Kenya. Journal of Development and Agricultural Economics, 13(3), 215-226. https://doi.org/10.5897/JDAE2021.1274.
Taremwa NK. Macharia, I., Bett, E., 2021. Characterization of smallholder farmers and agricultural credit institutions in Rwanda, Afr. J. Food Agric. Nutr. Dev. 2021; 21(1): 17343-17364 https://doi.org/10.18697/ajfand.96.19585
Taremwa NK. Macharia, I., Bett, E., 2021. Impact of agricultural credit access on agricultural productivity among maize and rice smallholder farmers in Rwanda, Journal of Agribusiness, and Rural Development, 59(1), pp. 39-58. doi: 10.17306/J.JARD.2021.01341.
Mwangi, B., Macharia, I., Bett, E., 2021. Ex‑post Impact Evaluation of Improved Sorghum Varieties on Poverty Reduction in Kenya: A Counterfactual Analysis. Social Indicators Research, https://doi.org/10.1007/s11205-020-02577-4
Mwangi, B., Macharia, I., Bett, E., 2020. Analysis of economic efficiency among smallholder sorghum producers in Kenya. Journal of Development and Agricultural Economics, 12(2), 95-103. https://doi.org/10.5897/JDAE2020.1162.
Mwangi, B., Macharia, I., Bett, E., 2020. A multi-dimensional adoption approach for improved sorghum varieties in eastern Kenya: a climate change adaptation perspective, Climate and Development, DOI: 1080/17565529.2020.1763237
Macharia, I., 2020. Dangerous pesticide use: what must be done to protect the health of Kenyans. Theconversation.com/africa/health. https://theconversation.com/dangerous-pesticide-use-what-must-be-done-to-protect-the-health-of-kenyans-142114
Muinga, G., Marechera, G., Macharia, I., Mugo, S., Rotich, R., Oniang', R., Karanja, J., Obunyali, C., Oikeh S.O., 2019. Adoption of climate-smart DroughtTEGO® varieties in Kenya. African Journal of Food, Agriculture, Nutrition and Development, 19 (4): 15090-15108
Marechera, G., Macharia, I., Muinga, G., Mugo, S., Rotich, R., Oniang', R., Karanja, J., Obunyali, C., Oikeh S.O., 2019. Impact of DroughtTEGO® hybrid maize variety on agricultural productivity and poverty alleviation in Kenya. African Journal of Agricultural Research, 14(34) 1833-1844.
Marechera, G., Macharia, I., Muinga, G., Mugo, S., Rotich, R., Oniang', R., Karanja, J., Obunyali, C., Oikeh S.O., 2019. Duration analysis of DroughtTEGO® hybrid maize adoption in Kenya. Agricultural Science Research Journal, 9 (5), 47 – 60.
Ruth, C., Macharia, I., Alice W. Charles, A. O. M and Zeyaur R. K. 2018 Ex-post economic analysis of push-pull technology in Eastern Uganda Crop Protection 112 (2018) 356–362
Luvanda A.M., Macharia I.N., Chikamai B. N and Wambugu S.K 2017 Socio-economic factors influencing collection of gum myrrh and opoponax from the wild in wajir county, Kenya. International Journal of Recent Scientific Research. 8(5): 17165-17172.
Ruth, C., Macharia, I., Alice W. Charles, A. O. M and Zeyaur R. K. 2017 Impact assessment of push-pull pest management on incomes, productivity and poverty among smallholder households in Eastern Uganda Food Security 9 (6): 1359–1372 Sustainability, 15, (4): 887-902
Luvanda A.M., Macharia I.N., Chikamai B. N and Wambugu S.K 2017 Socio-economic factors influencing collection of gum myrrh and opoponax from the wild in wajir county, Kenya. International Journal of Recent Scientific Research. 8(5): 17165-17172.
Midingoyi G.S-K., Macharia, I., Ong’amo, G., Abonyo, E., Ogola, G., De Groote, H. and LeRu, B.,2016 Assessing the long-term welfare effects of the biological control of cereal stemborer pests in East and Southern Africa: Evidence from Kenya, Mozambique and Zambia. Agriculture, Ecosystems and Environment, 230, pp.10-23
Macharia, I 2015 Pesticides and Health in Vegetable Production in Kenya BioMed Research International Volume 2015 (2015)
Ndungu, S., Macharia, I., Kahuthia-Gathu, R. and Githaiga, W.R 2013 Impact of Organic Vegetable Production System in Kiambu and Kajiado Counties of Kenya. Journal of Environmental Science and Engineering A2, (4). 256-266.
Ouma, E., Macharia, I., Birachi, E., Garming, H., Nyagaya, M., Pypers, P., Ochieng, J., Blomme, G., van Asten, P., Vanlauwe, B
2013 Agricultural technology diffusion and adoption in banana and legume based systems of Central Africa.
Karani-Gichimu, C., Macharia, I. and Mwangi, M 2013 Assessment of passion fruit orchard management and farmers’ technical efficiency in Central-Eastern and North-Rift Highlands, Kenya Journal of Economics and Sustainable Development, 5(2): 183-190
Karani-Gichimu, C., Macharia, I. and Mwangi, M 2013 Assessment of Input-Output Transformation in Purple Passion Fruit Production in Central-Eastern and North-Rift, Kenya. Current Research Journal of Economic Theory 5(2): 32-37
Macharia, I., Mithöfer, D. and Waibel, H 2012 Pesticide handling practices by vegetable farmer in Kenya Environment, Development and Sustainability, 15, (4): 887-902
Macharia, I. 2010 Indirect Costs of Pesticide Use in the Vegetable Production in Kenya.
Macharia, I., Mithöfer, D. and Waibel, H 2009 Potential Environmental Impacts of Pesticides Use in the Vegetable Sub-sector in Kenya. African Journal of Horticultural Sciences, 2: 138-151.
Macharia, I., Mithöfer, D. and Löhr, B 2006 Update of the Ex-ante Socio-economic Impact Assessment of the Biological Control of Plutella xylostella (Diamondback moth) in Kenya.
Macharia, I., Löhr, B. and De Groote, H 2005 Assessing the Potential Impact of Biological Control of Plutella xylostella (diamondback moth) in Cabbage Production in Kenya. Crop Protection, 24: 981-989

Books Chapters

Ouma, E., Macharia, I., Birachi, E., Garming, H., Nyagaya, M., Pypers, P., Ochieng, J., Blomme, G., van Asten, P., Vanlauwe, B., 2013. Agricultural technology diffusion and adoption in banana and legume based systems of Central Africa. Routledge Group, ISBN: 9780415532730.
Macharia, I., 2012. Indirect Costs of Pesticide Use in the Vegetable Production in Kenya. In: Mithöfer, D. and H. Waibel (eds.) African Vegetable Production and Marketing: Socio-Economic. CAB International, UK. ISBN:9781845936495.

Referred Learning Modules

KBT 309: Agribusiness Strategy and Marketing Plans- Dr. Ibrahim Macharia & Dr. Erick Bett.
KBT 419: Agricultural land economics- Dr. Ibrahim Macharia & Dr. Erick Bett.
KBT 433: Financial management for Agribusiness- Dr. Ibrahim Macharia & Dr. Gabriel Mwenjeri.
KBT 803: Strategic Agribusiness- Dr. Ibrahim Macharia & Dr. Erick Bett.

Reviewed Conference Papers

Macharia, I., Orr, A., 2012. Potential economic and poverty impact of improved chickpea technologies in Ethiopia. Presentation at International Conference of Agricultural Economists, August, 2012 Iguaçu, Brazil.

Consultancy and Project Reports

Macharia, I., Bett, E., Ngetich, F., Kiboi, M., 2017. Assessing and analysing the level of adoption of DroughtTEGO^® hybrid maize seed in Kenya. A report to African Agricultural Technology Foundation (AATF).
Macharia, I., Orr, A., 2014. Cereals consumption pattern in Tanzania. A report to International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Kenya.
Macharia, I., Orr, A., Schipmann, C., 2012. Cereals consumption pattern in Kenya. A report to International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Kenya.
Macharia I., Garming H., Ouma E., Birachi E., Ekesa B., de Lange M., Blomme G., Van Asten P., Van-Lauwe B., Kanyaruguru J., Lodi-Lama J., Manvu J., Bisimwa C., 2012. Assessing the Impact of Consortium for Improving Agriculture-based Livelihoods in Central Africa (CIALCA) Technologies on Crop productivity and Poverty in the great lakes region of Burundi, the Democratic Republic of Congo (DR Congo) and Rwanda. A report to Bioversity International, Italy.
Macharia, I., Orr, A., Simtowe, F., 2011. Potential Economic and Poverty Impact of Adoption of Improved chickpea technologies in Ethiopia. A report to International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Kenya.
Macharia, I., Orr, A., Simtowe, F., 2011. The Adoption and Profitability of Chickpea Technologies in Ethiopia. A report to International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Kenya.
Nyambo, B., Macharia, I., Maundu J., 2006. Promotion of Integrated Pest Management for Vegetable Production in the Eastern Arc Mountains & East African Coastal forest mosaic Biodiversity hotspots. A report to Bio-vision Foundation, Switzerland.
Macharia, I., Akivaga, F., Ndenga, E., 2004. Impact of Radio Awareness Campaign for Export Horticulture Producers and Out grower Groups to comply with EUREPGAP protocols: Mid- term Evaluation of the Radio Awareness Programme. A report to BMSDP-DFID Crop Protection Programme.
Macharia, I., Nyambo, B., 2003. Impact of Integrated Crop Management Training on Maragua Ridge Mango Production: Baseline data on Knowledge, Practice, Marketing, and Production Economics. A report to Bio-vision –ICIPE- IPM Project on Mango Production: ICIPE, Kenya.
Macharia, I., 2002. Socio- economic Base-line Information of Smallholder French beans Producers in Kenya. A report to USAID–ICIPE IPM Project on French beans and Okra, Nairobi: ICIPE, Kenya.
Macharia, I., Eckert, M., 2002. Comparative Study of Tissue culture and Conventional sucker Propagation Methods of Banana (musa spp.) at Farm levels in Kenya. In: J.M., Wesonga et al. (ed.) Proceedings of the Horticulture Seminar on Sustainable Horticultural Production in the Tropics, Oct 2001. Jomo Kenyatta University of Agriculture and Technology, Kenya.
Macharia, I., Britta, M., 1999. Importance of Indigenous Tree in North Horr (Marsabit District). A report to GTZ- Integration of Tree Crops into Farming System Project, Nairobi, Kenya.

Conference Papers

Macharia, I., 2024. Cost-Efficient Aquaponic Technologies for Sustainable Urban Agriculture in Kenyan Cities. Paper accepted for presentation at the Water Security and Climate Change Conference (WSCC24) held on 09–11 October 2024 in Giessen, Germany.
Macharia, I., 2023. Enhancing Doctoral Supervision: A Multiplication Project. Presentation at CREST Networking event held on 19–22 September 2023 at Stellenbosch University, South Africa.
Macharia, I., 2021. Social-Economic Impacts of sand dam in Semi-Arid Agricultural Areas of Kenya. Paper accepted for online presentation at International Water Security and Climate Change Conference 01-04, March 2021 Vietnam Academy for Water Resources (VAWR) in Hanoi, Vietnam.
Macharia, I., 2019. Social economic Impact assessment of solar powered- micro irrigation system in Kenya Paper accepted for oral presentation at International Water Security and Climate Change Conference 28-30 October 2019, Universidad Autónoma de San Luis Potosí, Mexico.
Macharia, I., 2019. Digital agribusiness empowers small scale farmers in Kenya. Contributed Paper accepted for oral presentation at International WHZ-Zwickau and DAAD/BMZ Alumni Seminar 2019, “Digitalization plus Industry 4.0” 29th April - 5th May 2019 in Zwickau, Germany.
Macharia, I., 2018. Postharvest losses (PHLs) in Kenya. Contributed Paper accepted for oral presentation at International DAAD Alumni Seminar 2018, “Sustainable Food Production and Food Security in Developing Countries – Quality Management and Resource Use Efficiency along Agri-Value Chains” 11–19 March 2018 in Witzenhausen, Germany.
Macharia, I., Mithöfer, D. and Waibel, H., 2013, Health Effects of Pesticide Use among Vegetable farmer in Kenya. Invited paper presented at the 4th International Conference of the African Association of Agricultural Economists, September, 22-25, 2013, Hammamet, Tunisia.
Macharia, I., 2013. Post-Harvest losses in Kenya. Paper presented at the Post-Harvest losses in Africa- Analytical review and synthesis workshop, February, 2013, ICIPE/ Kenya
Macharia, I., 2013. Postharvest losses and postharvest innovations on key horticultural crops – Kenya. Contributed Paper accepted for oral presentation at AGRA Expert and Stakeholder Workshop on Waste and Spoilage Issues, Challenges Facing Smallholder Farmers and Potential Intervention Points, April, 2013, Machakos, Kenya.
Macharia, I., 2013. Planning and Implementing Plans. Presentation at Transformational Leadership in Agribusiness workshop, December 2013, Ethiopia.
Macharia, I., Orr, A., 2012. Potential economic and poverty impact of improved chickpea technologies in Ethiopia. Presentation at International Conference of Agricultural Economists, August, 2012 Iguaçu, Brazil.
Macharia, I., 2012. Planning and Implementing Plans. Presentation at STEP training workshop, March, 2012. Kenyatta University, Kenya.
Macharia, I., 2010. External Costs of Pesticide Use in the Vegetable Production in Kenya. In: J.M., Wesonga et al. (ed.) Proceedings of the Horticulture Seminar on Sustainable Horticultural Production in the Tropics, Dec 2008. Jomo Kenyatta University of Agriculture and Technology, Kenya.
Macharia, I., Mithöfer, D. and Waibel, H., 2009. Determinants of Pesticide Handling Practices in Vegetable Production in Kenya. Paper presented at Tropentag, October, 2009, Hamburg/ Germany.
Macharia, I., 2008. External Costs of Pesticide Use in the Vegetable Production in Kenya. Contributed Paper presented at the Horticulture Seminar on Sustainable Horticultural Production in the Tropics, December 2008.
Macharia, I., 2005. Economic Impact Assessment of Training French beans Smallholders on Integrated Pest Management (IPM) and Good Agricultural Practices (GAP) through farmer field school. In: J.M., Wesonga et al. (ed.) Proceeding of fourth Workshop on Sustainable Horticultural Production in the Tropics, Nov 2004. Moi University, Kenya.
Macharia, I., Mithöfer, D. and Löhr, B 2004. Update of the Ex-ante Socio-economic Impact Assessment of the Biological Control of Plutella xylostella (Diamondback moth) in Kenya. Paper presented at Organic Agriculture in Development, the fifth International Workshop on Diamondback Moth and Other Crucifer Insect Pests. Beijing, China.
Macharia, I., Löhr,B., De Groote, H., 2004. Ex-ante Economic Impact Assessment of the Introduction of the Diamondback Moth Parasitoid, Diadegma semiclausum, in Kenya. XV International Plant Protection Congress, May 2004. Beijing, China.
Macharia, I., Löhr, B. 2004. Economic Impact Assessment of Training French beans Smallholders on Integrated Pest Management (IPM) and Good Agricultural Practices (GAP) through farmer field school. Contributed Paper accepted for oral presentation at fourth Workshop on Sustainable Horticultural Production in the Tropics, November 2004, Nairobi, Kenya.
Macharia, I., 2004. Economic Impact assessment of training French beans smallholders on Integrated Pest Management (IPM) and good agricultural practices (GAP) through farmer field school. Paper presented at the fourth Workshop on Sustainable Horticultural Production in the Tropics, Nov 2004, Moi University, Kenya.
Macharia, I., Eckert, M., 2001. Comparative study of tissue culture and conventional sucker propagation methods of banana (musa spp.) at farm levels in Kenya. Paper presented at Horticulture Seminar on Sustainable Horticultural Production in the Tropics, held on, Oct 2001, Jomo Kenyatta University of Agriculture and Technology, Kenya.

Other Publications

Macharia, I., 2020. Dangerous pesticide use: what must be done to protect the health of Kenyans. Theconversation.com/africa/health. https://theconversation.com/dangerous-pesticide-use-what-must-be-done-to-protect-the-health-of-kenyans-142114

Quality teaching, learning and mentorship

Student Evaluations

Consistently received positive feedback from both undergraduate and postgraduate students for effective teaching, mentorship, and supervision.

Training in Higher Education

2023 – Certificate in Impact Evaluation (Partial and General Equilibrium Models), IFPRI – USA
2023 – Certificate in Driving Financial Inclusion through Food Systems Policy, KOICA – South Korea
2022 – Certificate in Climate Change and Sustainable Development, EPTRI – India
2021 – Certificate in Doctoral Supervision and Management, Stellenbosch University – South Africa
2019 – Certificate in Innovation and Incubation Management, Neu-Ulm University of Applied Sciences – Germany
2018 – Certificate in HEInnovate Assessment Tools, Kenyatta University – Kenya
2013 – Certificate in Teaching Methodology, Kenyatta University – Kenya
2012 – Certified Trainer in Student Training for Entrepreneurial Promotion (STEP), Kenyatta University – Kenya
2006 – Certificate in Standards and Trade for Agro-Food, World Bank Institute – USA

Professional/consultancy

Networks/Collaborations

Participated in the Annual General Meeting for the Integrated and Circular Technologies for Sustainable City Region FOOD Systems in Africa; (INCiTiS) HORIZON-CL6-2022- 24. Funded by the European Commission- In University of Masuku –Gabon from 30 march- 5^th April 2025.
Attended the CREST Networking event at Stellenbosch University, South Africa, and gave a presentation on “Enhancing Doctoral Supervision: A Multiplication Project for 2023”, from September 19–22, 2023.
Contributed to the International DAAD Alumni Seminar 2019 on “Digitalization plus Industry 4.0” in Zwickau, Germany, by presenting the paper “Digital Agribusiness Empowers Small Scale Farmers in Kenya”, from April 29 – May 5, 2019.
Contributed to the XV International Plant Protection Congress held in Beijing, China, by presenting research on “Ex-Ante Economic Impact Assessment of the Introduction of the Diamondback Moth Parasitoid, Diadegma semiclausum, in Kenya”, in May 2004.
Delivered a research paper titled “Social-Economic Impacts of Sand Dam in Semi-Arid Agricultural Areas of Kenya” at the International Water Security and Climate Change Conference held in Hanoi, Vietnam, from March 1–4, 2021.
Delivered insights on “Postharvest Losses (PHLs) in Kenya” during the DAAD Alumni Seminar on “Sustainable Food Production and Food Security in Developing Countries” held in Witzenhausen, Germany, from March 11–19, 2018.
Disseminated research titled “Potential Economic and Poverty Impact of Improved Chickpea Technologies in Ethiopia” at the International Conference of Agricultural Economists in Iguaçu, Brazil, in August 2012.
Engaged in expert discussions and shared findings on “Post-Harvest Losses in Kenya” during the Analytical Review and Synthesis Workshop held at ICIPE, Kenya, in February 2013.
Engaged in the International Water Security and Climate Change Conference held in San Luis Potosí, Mexico, and shared findings from the paper “Social Economic Impact Assessment of Solar Powered-Micro Irrigation System in Kenya”, from October 28–30, 2019.
Engaged stakeholders with a paper titled “External Costs of Pesticide Use in the Vegetable Production in Kenya” during the Horticulture Seminar on Sustainable Horticultural Production in the Tropics, held in Nairobi, Kenya, in December 2008.
Facilitated a session on “Planning and Implementing Plans” during the STEP Training Workshop held at Kenyatta University, Kenya, in March 2012.
Made a technical presentation on “Postharvest Losses and Postharvest Innovations on Key Horticultural Crops – Kenya” during the AGRA Expert and Stakeholder Workshop in Machakos, Kenya, in April 2013.
Participated as a speaker during the Transformational Leadership in Agribusiness Workshop held in Ethiopia and discussed “Planning and Implementing Business Plans”, in December 2013.
Presented a paper titled “Cost-Efficient Aquaponic Technologies for Sustainable Urban Agriculture in Kenyan Cities” during the Water Security and Climate Change Conference (WSCC24) held in Giessen, Germany, from October 9–11, 2024.
Presented a paper titled “Economic Impact Assessment of Training French Beans Smallholders on Integrated Pest Management (IPM) and Good Agricultural Practices (GAP) through Farmer Field School” at the Fourth Workshop on Sustainable Horticultural Production in the Tropics, held in Nairobi, Kenya, in November 2004.
Presented a study on “Cereals Consumption Patterns in Tanzania” at the conference “Building a New Generation of Agricultural Scientists” held at Kenyatta University, Kenya, in December 2014.
Took part in the Tropentag Conference held in Hamburg, Germany, and presented a study titled “Determinants of Pesticide Handling Practices in Vegetable Production in Kenya”, in October 2009.

Editorial Boards/Referee for professional periodicals

2022: Scientific member to1st biennial international conference on bridging the gap between society, science and industry
2024: Abstracts Reviewer for RUFORUM’S second Triennial Conference
2024: Reviewer for 3 papers KIPPRA publication review Committee

Membership in acad/prof bodies

2013- to date: International Association of Agricultural Economists
2011- to date: African Association of Agricultural Economists
2007- to date: Young Professionals’ Platform for Agricultural Research for Development (YPARD)
2007- to date: German Academic Exchange Service (DAAD) alumni
2006- to date: World Bank Institute alumni
2003- to date: Horticultural Association of Kenya

Editorial/Peer Review

2024: Reviewer for papers entitled: “Integrating Adaptive Forest Management and Transition To Alternative Energy Sources In Kenya's Tea Industry and Assessing Technical Efficiency of Firms Dealing in Forest Primary Products And The Demand In Forestry Value Chain: KIPPRA publication review Committee 2024.
2021: Reviewer and Commission Member for the Future Bora Initiative under the Kenya Youth Employment and Opportunities Project (KYEOP), contributing to the evaluation and selection of innovative solutions aimed at creating sustainable employment opportunities for youth in Kenya.
2021-2024: External Reviewer and Member of the DAAD Selection Committee for the DAAD In-Country/In-Region Scholarship Programme in Eastern Africa, providing independent assessment and expert recommendations on scholarship applications across the region.
2017 to present: Professional Mentor at the Chandaria Business Innovations and Incubation Center (BIIC), actively involved in reviewing and evaluating startup ideas and innovations, while providing strategic guidance to early-stage entrepreneurs and incubatees.

External Examiner to universities

University of Nairobi – Department of Agricultural Economics (2014 – Present): Examine PhD and Master’s theses, offering independent evaluation and expert critique to support academic rigor and research excellence.
University of Embu (2018 – 2024): Contribute as an external examiner for PhD and Master’s theses and also review undergraduate and postgraduate examinations within agricultural and applied economics programs.
University of Eldoret (2019 – Present): Serve as an external examiner for postgraduate theses as well as undergraduate and postgraduate coursework and examinations, ensuring consistency and quality in academic standards.
Pwani University (Dates not specified): External examiner for graduate theses (PhD and Master’s), with responsibilities including evaluation of research quality and relevance in agricultural-related disciplines.
Moi University (Dates not specified): Engage as an external examiner for PhD and Master’s theses, providing independent review and scholarly input on research outputs.
Jomo Kenyatta University of Agriculture and Technology (JKUAT) (2013 – Present): External examiner for both PhD and Master’s theses in Agricultural Economics, providing scholarly assessment and academic quality assurance for postgraduate research.

Administrative and Responsibilities

Recognized university administrative positions

2017 to 2020: Chairperson department of agricultural economics
2014 to 2016: exam coordinator department of agribusiness management and Trade.
2011: Acting Chairperson, Agribusiness and trade
2019: Acting dean, school of agriculture and enterprise development

Other responsibilities in the University

2023 to date: Departmental Research, Innovation and Outreach Coordinator
2023 to date : Member of Kitui disciplinary committee
2021- to date: Departmental coordinator of post graduate studies
2021 to date: Departmental chair of selection committee.
2021- to date: Departmental curriculum review chairman
2021- to date: School post graduate member
2021 to date: Member of the Departmental Linkage, Research& Resource Mobilization Committee
2021 to date: Departmental Academic Advisory Committee.
2019 to date: Professional mentor in Chandaria Business Innovations and Incubation Center (BIIC)
2012 to date: Student on Entrepreneurial Promotion (STEP) trainer in Kenyatta university and in the counties
2012 to 2015: Departmental chair of selection committee.
2012- to 2015: Departmental curriculum review chairman
2019 to date: Professional mentor in Chandaria Business Innovations and Incubation Center (BIIC)
2014: development of BSc. Agricultural economic programme.
2014: university- industry linkage board member.
2013-2015: school of agriculture and enterprise development linkages board member.

Community Engagements and Other Contributions

Research funding

2022–2026: Integrated and Circular Technologies for Sustainable City Region FOOD Systems in Africa (INCiTiS-FOOD) –(HORIZON-CL6-2022-FARM2FORK-01-14): Funded by the European Union (Living Lab Manager).
2024: Exploring Innovative and Cost-Effective Circular Economy-Based Food System Value Chain Business Models in Germany for Application in Kenya – Individual Research Project: Funded by DAAD- 2023 (Principal Investigator).
2023: Strengthening Sustainable Food Value Chains: Lessons from Kenya and Germany on Circular Economy and Climate Change Adaptation Strategies – Study & Research Visit for Groups of Foreign Students to Germany: – Individual Research Project: Funded by DAAD- 22 (Principal Investigator).
2022: Cost-Effective and Innovative Agricultural Value Chain Business Models – Individual Research Project: Funded by HNU-2022 (Principal Investigator).
2021–2022: Towards Reducing Poverty, Vulnerability and Enhancement of Livelihood Strategies of Pastoralists in North Eastern Kenya – Institutional Research Project: Funded by the Vice Chancellor’s Grant – 2021 (Principal Investigator).
2007–2010: Externalities of Pesticide Use in the Vegetable Sub-sector in Kenya – PhD Research: Funded by BMZ & DAAD (Principal Investigator).
2006–2007: Socio-Economic Impact of Training Small Scale Farmers on Integrated Pest Management and Good Agricultural Practices through Farmer Field Schools – Project led by ICIPE: Funded by USAID (Impact Evaluator).
2006: Impact of Radio Awareness Programmes for Export Horticulture Producers and Outgrower Groups to Comply with Global-GAP Protocols – Public Engagement Initiative: Funded by BMSDP–DFID (Impact Evaluator).
2006–2007: Promotion of Integrated Pest Management for Vegetable Production in the Eastern Arc Mountains and East African Coastal Forest Mosaic Biodiversity Hotspots – Regional Initiative by ICIPE: Funded by BIOVISION (Impact Evaluator).
2004–2006: Impact Assessment of Diamondback Moth Bio-control Project for Eastern and Southern Africa – Regional Project: Funded by BMZ, Germany (Impact Evaluator).
2003: Impact of Integrated Crop Management Training on Maragua Ridge Mango Production: Baseline Study on Knowledge, Practice, Marketing, and Production Economics – Project by ICIPE: Funded by USAID (Impact Evaluator).
2002–2003: Comparative Study of Tissue Culture and Conventional Sucker Propagation Methods of Banana (Musa spp.) at Farm Levels in Kenya – Applied Research Project: Funded by GTZ–ITFSP (Principal Investigator).
1999–2000: Economic Use of Indigenous Trees in North Horr, Kenya, with Special Emphasis on Doum Palm Fruit Tree – Joint Study: Funded by GTZ–ITFSP (Co-Investigators).

Community Outreach

2019 to date: Board of Management (BOM), Senior Chief Mukira Secondary School, othaya, Nyeri county
2017, to date: Board of Management (BOM), Sukari Presbyterian academy, Nairobi Presbytery-Nairobi County.
2020-date: Church Deacon – in P.C.E.A Kahawa Sukari –Sukari Parish, Nairobi North Presbytery.
2018-date: audit committee member – in P.C.E.A Kahawa Sukari –Sukari Parish, Nairobi North Presbytery
2022-date: Brigade chairperson – in P.C.E.A Kahawa Sukari –Sukari Parish, Nairobi North Presbytery

Professional Affiliation & Portfolios

2022: Steering Committee Member-
2013- to date: International Association of Agricultural Economists
2011- to date: African Association of Agricultural Economists
2007- to date: German Academic Exchange Service (DAAD) alumni
2006- to date: World Bank Institute alumni
2003- to date: Horticultural Association of Kenya

Recognition, awards, and honors

2025 – Best Stand in Research and Development, INCiTiS-FOOD Project at Nairobi agricultural show. Showcased a circular economy model using: Kitchen waste to feed Black Soldier Fly (BSF), BSF as fish feed, Fish waste and BSF frass for crop farming, BSF liquid fertilizer in hydroponic systems.
2022 & 2024 – Reviewer for RUFORUM and KIPPRA publications
Presented research at international conferences in Germany, Brazil, China, South Africa, Vietnam, and Mexico

Chairperson

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