Position: Senior Lecturer 
Department: Agricultural Economics 
Contact Address: P.O. Box 43844 , 00100 Nairobi
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

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ORCID ID: https://orcid.org/0000-0002-0154-8890?lang=en

website: http://www.ku.ac.ke/schools/agriculture/index.php/faculty-profiles/faculty/89-faculty/10-dr-ibrahim-macharia

google scholar: https://scholar.google.com/citations?user=UU9E9c4AAAAJ&hl=en

Publons: https://publons.com/researcher/4969705/ibrahim-ndegwa-macharia/

Linkedin: https://www.linkedin.com/in/ibrahim-macharia-998166156/?trk=pub-pbmap&originalSubdomain=ke

Research Gate: https://www.researchgate.net/profile/Ibrahim-Macharia


 

Area of Specialization

  • Agricultural Economics

Research Interests

  • Social- economic and environmental impact of agricultural technologies, externalities of development project, the impact of climate change and agricultural sustainability

Conference Papers

  1. Macharia, I., 2021. Social economic impact assessment of solar powered micro irrigation system in 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.

Publications

  • 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