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1. Mwaura, F. M., Ngigi, M. W., & Obare, G. (2024). Do smallholders have a role to play in atmospheric greenhouse gas removal? Insights from western Kenya. Scientific African, e02206.  
2. Mutyaba, J. L., Ngigi, M. W., & Ayuya, O. I. (2024). Determinants of knowledge, attitude and perception towards cage fish farming technologies among smallholder farmers in Uganda. Cogent Food & Agriculture, 10(1), 2313252. DOI:
   10.1080/23311932.2024.2313252
3. Matata, M. J., Ngigi, M. W., & Bett, H. K. (2023). Effects of cash transfers on household resilience to climate shocks in the arid and semi arid counties of northern Kenya. Development Studies Research, 10(1), 2164031.

4. Khaemba, S. G., Ngigi, M., & Gathungu, E. (2022). Factors affecting choice of Outlets for Improved Pigeon Peas Among farmers in Taita Taveta County. East African Agricultural and Forestry Journal, 86(1-2), 11-11.

5. Matata, M. J., Ngigi, M. W., Bett, H. K., & Michael, P. M. (2022). Effects of cash transfers on food expenditure patterns in northern Kenya. Cogent Food & Agriculture, 8(1), 2149138.

6. Akinyi, D. P., Karanja Ng'ang'a, S., Ngigi, M., Mathenge, M., & Girvetz, E. (2022). Cost-benefit analysis of prioritized climate-smart agricultural practices among smallholder farmers: evidence from selected value chains across sub-Saharan Africa. Heliyon, 8(4), e09228.

7. Sambrumo, G. M., Ngigi, M. W., & Mutai, B. K. (2022). Influence of Agripreneurial Orientation Constructs on Growth of Cassava-Based Small and Medium Enterprises in Migori County, Kenya. Asian Research Journal of Agriculture, 15(4), 45-55.

8. Mwaura, F. M., Ngigi, M., & Obare, G. (2022). Agricultural Productivity and Labour Allocation Trade-Off Crises for Agriculture, Cooking Energy Sourcing and Off-Farm Employment in Developing Countries: Evidence from Western Kenya. African Journal of Education, Science and Technology, 7(1), 277-293.DOI: 

9. Mwaura, F. M., Ngigi, M. W., & Obare, G. A. (2021). Drivers of cooking energy choices by meal-types among smallholder farmers in western Kenya. Journal of Energy in Southern Africa, 32(2), 41-58.

10. Wambua, J. M., Ngigi, M., & Muhammad, L. (2019). Functional Diversity and Performance of Direct Marketing Outlets for Smallholder Farmers of Green Gram and Pigeon Pea Commodities in Machakos County, Kenya. East African Agricultural and Forestry Journal, 83(3), 239-267.
11. Wambua, J. M., Ngigi, M., & Muhammad, L. (2019). Assessment of Differences in Small Farmer Uses of Produce and Determinants of Marketed Surplus of Green Grams and Pigeon Peas in Semi-arid Machakos County, Kenya. East African Agricultural and Forestry Journal, 83(3), 163-175. 
12. Kimani, M., Ngigi, M., & Ilatsia, E. (2019). Socio-Economic Determinants of Selection Criteria for East African Zebu Cattle Breeding for Dairy Production: Case of Kitui County, Kenya. Journal of Economics and Sustainable Development Vol.10, No.18, 2019  DOI: 10.7176/JESD/10-18-06
13. Wambua, J. M., Ngigi, M., & Lutta, M. (2017). Yields of Green Grams and Pigeonpeas under Smallholder Conditions in Machakos County, Kenya. East African Agricultural and Forestry Journal, 82(2-4), 91-117.
14.  Ongudi, S. O., Ngigi, M. W., & Kimurto, P. K. (2017). Determinants of Consumers’ Choice and Willingness to Pay for Biofortified Pearl Millet in Kenya. East African Agricultural and Forestry Journal, 82(2-4), 175-187.   
15. Kimani, T., Ngigi, M., Schelling, E., & Randolph, T. (2016). One Health stakeholder and institutional analysis in Kenya. Infection ecology & epidemiology, 6(1), 31191.   
16. Kimani, T., Schelling, E., Bett, B., Ngigi, M., Randolph, T., & Fuhrimann, S. (2016). Public health benefits from livestock Rift Valley fever control: A simulation of two epidemics in Kenya. EcoHealth, 13(4), 729-742.  
17. Okech, A. O. S., Kimurto, P. K., & Ngigi, M. (2016). Profits and Efficiency along Pearl Millet Market Chain: A Value Addition Approach. Industrial Engineering Letters,  ISSN 2224-6096 (Paper) ISSN 2225-0581 (online) Vol.6, No.5, 2016
18. Odhiambo, W., Ngigi, M., Lagat, J., Binswanger, H. P., & Rubyogo, J. C. (2016). Analysis of quality control in the informal seed sector: Case of smallholder bean farmers in Bondo subâ€�county Kenya. The African Journal of Economic and Sustainable Development, ISSN 2222-1700 (Paper) ISSN 2222-2855 (Online) Vol.7, No.8, 2016
19. Margaret, N. M., Margaret, N., & Wellington, M. (2015). Gender and age analysis on factors influencing output market access by smallholder farmers in Machakos County, Kenya. African Journal of Agricultural Research, 10(40), 3840-3850. DOI: 10.5897/AJAR2014.9368
20. Simon, G. K., Margaret, N., & Bett, H. K. (2015). Determinants of farmer participation in collective marketing and intensity of participation in indigenous chicken markets in Western Kenya. Journal of Agriculture and Veterinary Science, 8(10), 98-105. 
21. Amudavi, D. M., Ombati, J. M., Nkurumwa, A. O., & Ngigi, M. (2014). Technical, economic and social gaps and information needs among smallholder farmers in practice of ecological organic agriculture in Kenya. Journal of Economics and Sustainable Development ISSN 2222-1700 (Paper) ISSN 2222-2855 (Online) Vol.7, No.8, 2016
22. Macharia, M. A., Mshenga, P. M., Ngigi, M., Gido, O. E., & Kiprop, K. J. (2014). Effect of transaction costs on smallholder maize market participation: Case of Kwanza District, Trans Nzoia County, Kenya. International Journal of Development and Sustainability, 3(4), 715-725. 
23. Okech, S. O., Ngigi, M., Kimurto, P. K., Obare, G., Kibet, N., & Mutai, B. K. (2014). One and one half bound dichotomous choice contingent valuation of consumers willingness-to-pay for pearl millet products: Evidence from Eastern Kenya. African Journal of Agricultural Research, 9(42), 3146-3155.   doi: 10.5897/AJAR2014.8806
24. Kamuru, S. M., Kariuki, S. T., Mungai, N. W., Bebe, B. O., Chiuri, W., Ngigi, M., & Lelo, F. K. (2014). Food Management Strategies for Coping with Food Insecurity in a Changing and Variable Climate by Smallholder Farmers in Kenya. International Journal of Innovation and Applied Studies, 9(2), 797.  
25. Kariuki, S.T., Mungai, N., Ngigi, M., Kamuru, S., Lelo, F., Bebe, B. and Chiuri, W. (2014) Smallholders’ Perceptions of Climate Change Impact on Biodiversity: A Case Study of Farmers in Varied Agroecological Zones in Kenya In 

    Proceedings Of the 1 st International Research Conference Held On the Main Campus from 29th – 31st October, 2014, Chuka University, Kenya

26. Kiratu, N. M., Ngigi, M., & Mshenga, P. M. (2014). Perception of smallholder farmers towards the kilimo plus subsidy program in Nakuru North district, Kenya. Journal of Agriculture and Veterinary Science, 6(6), 28-32.
27. Mukundi, E., Mathenge, M. K., & Ngigi, M. (2013). Sweet potato marketing among smallholder farmers: The role of collective action (No. 309-2016-5277). 
28. Oloo, G. I., Ngigi, M., & Mshenga, P. (2013). Evaluation of Climate Change Adaptation Strategies among Smallholder Farmers in Bungoma County, Kenya. JOURNAL OF SCIENCE AND APPLIED TECHNOLOGY, 76.   
29. Mbugua, D. K., Matofari, J. W., Ngigi, M., Wokabi, A., Lanyasunya, T. P., Matofari, J. (2012). Information access and rating of delivery pathways by smallholder dairy farmers in central Kenya. KARI, Naivasha.  
30. Kimani, T. M., Schelling, E., Ngigi, M., & Randolph, T. F. (2012). Economic analysis of alternate Rift Valley fever control options from a multisectoral perspective.  International Symposia on Veterinary Epidemiology and Economics proceedings, ISVEE13: Proceedings of the 13th International Symposium on Veterinary Epidemiology and Economics, Belgium, Netherlands, Session 43 - Epidemic diseases in Non-Western countries, p 200, Aug 2012Article class:  
31. Muriithi, B. W., Mburu, J., & Ngigi, M. (2011). Constraints and determinants of compliance with EurepGap standards: a case of smallholder french bean exporters in Kirinyaga district, Kenya. Agribusiness, 27(2), 193-204. 
32. Emukule, J. I., Ngigi, M., & Guliye, A. Y. (2011). Analysis of socio-economic factors influencing willingness to pay for camel milk in Nakuru district, Kenya. Religion, 13(10.2), 7-4.  
33. Juma, G. P., Ngigi, M., Baltenweck, I., & Drucker, A. G. (2010). Consumer demand for sheep and goat meat in Kenya. Small ruminant research, 90(1-3), 135-138.  
34. Auma, J. O., Langat, J. K., & Ngigi, M. W. (2010). A comparison of male-female household headship and agricultural production in marginal areas of Rachuonyo and Homa Bay District, Kenya. Jordan Journal of Agricultural Sciences, 6(4).  
35. Akuja, T. E., Mutua, B. M., Guliye, A. Y., Gichaba, C. M., Ngigi, M. W., Karachi, M., & Abdulrazak, S. A. (2009). Trends and current status of indigenous knowledge among the inhabitants of the Turkwel riverine in Kenya: IKS community development and resilience. Indilinga African Journal of Indigenous Knowledge Systems, 8(2), 209-217.  
36. Olwande, J., Ngigi, M., & Nguyo, W. (2009). Supply responsiveness of maize farmers in Kenya: A farm-level analysis (No. 1005-2016-78929). 
37. Ngigi, M. (2008). Structure, conduct and performance of commodity markets in South Sudan: Linkages food security. Washington, DC: Famine Early Warning Systems Network.   
38. Juma, G. P., Baltenweck, I., Drucker, A. G., & Ngigi, M. (2007, September). Consumption of, and willingness to pay for, indigenous small ruminants’ meat in Marsabit, Kenya. In International Conference on Connecting Science, Society and Development: Development Studies Association (DSA) held at the University of Sussex (pp. 18-20).   Link
39. Juma, G. P., Drucker, A. G., Baltenweck, I., & Ngigi, M. (2007, September). Market power and efficiency in indigenous small ruminant marketing channels in Marsabit, Kenya. In International Conference on Connecting Science, Society and Development: Development Studies Association (DSA) held at the University of Sussex (pp. 18-20). 
40. Owuor, G., Ngigi, M., & Shem Ouma, A. (2007). Role of micro-credit in rural development: an analysis of group based microfinance in Kenya. Egerton Journal of Humanities, Social Sciences and Education, 7(special issue), 43-55.  
41. Owuor, G., Ngigi, M., Ouma, A. S., & Birachi, E. A. (2007). Determinants of Rural Poverty in Africa: The case of small holder farmers in Kenya. Journal of Applied Sciences, 7(17), 2539-2543.  
42. Obare, G. A., Mwakubo, S. M., & Ngigi, M. W. (2002). Maize Productivity and Production Strategies: An Analysis of Kenyan Smallholder Agriculture. International journal of agriculture and rural development, 3(1), 17-27.  
43. Ngigi, M. W. (2002). An Evaluation of the Impacts of Transaction Cost and Market Outlet Risks on Market Participation of Smallholder Dairy Farmers in Central Kenya (Doctoral dissertation, University of Nairobi.).  
44. Ngigi, M., Delgado, C. L., Staal, S. J., & Mbogoh, S. (2000). The role of market outlet in determining terms for milk sales by smallholders in Kenya.  
45. Ngigi, M. W. (1988). Structure, conduct and performance of egg marketing between Kiambu and Nairobi (Doctoral dissertation, University of Nairobi).  

Book Chapters

1. Ngigi M.W, Ahmed, Ehui and Assefa  “Dairy Developments in East Africa”, In Steven Haggblade and Peter Hazell (2010) (eds) Successes in African Agriculture: Lessons for The Future John Hopkins University Press .
2.  Minot and Ngigi, M.W .“Are Horticultural exports a replicable Success Story?” In Steven Haggblade and Peter Hazell (2010) (eds) Successes in African Agriculture: Lessons for The Future John Hopkins University Press .
3. Minot, N., & Ngigi, M. (2004). Are horticultural exports a replicable success story?: evidence from Kenya and CĂ´te d'Ivoire. Intl Food Policy Res Inst. Are Horticultural Exports a Replicable Success Story?: Evidence from Kenya ... - Nicholas Minot, Margaret Ngigi - Google Books 
4. Ngigi, M. (2005). The case of smallholder dairying in Eastern Africa (Vol. 131). Intl Food Policy Res Inst.  ; 

Policy, Practice and Research Briefs

1. Ndambi, A., Zijlstra, J., Ngigi, M., van der Lee, J., & Kilelu, C. (2017). Calculating on-farm cost of milk production in Kenya. Assessing the suitability of five methods being used in Kenya. 3R Kenya project Practice brief, 1.  
2. Ndambi, A., Njiru, R., van Knippenberg, C., van der Lee, J., Kilelu, C., & Ngigi, M. (2018). Private and public costs and benefits of implementing a quality-based milk payment system in Kenya. Wagenigen University & Research. 3R Kenya. Wageningen.  
3. Ndambi, O. A., Njiru, R., van Knippenberg, C., van der Lee, J., Kilelu, C. W., Ngigi, M., ... & Mbera, G. (2018). Enhancing milk quality and safety:: Towards milk quality-based milk payments in Kenya (No. 001). Wageningen University & Research.  
4. Ngigi, Margaret. 2004. Smallholder dairy in Kenya. 2020 Vision Focus 12(6). Washington, D.C.: International Food Policy Research Institute (IFPRI).
5. Minot, Nicholas; and Ngigi, Margaret. 2004. Are Kenya's horticultural exports a replicable success story? 2020 Vision Focus 12(7). Washington, D.C.: International Food Policy Research Institute (IFPRI).