James Ndufa Publications

Journal Papers

  1. UNEP (2019). Summary of SUSTAINABILITY OF SUGARCANE BAGASSE BRIQUETTES AND CHARCOAL VALUE CHAINS IN KENYA: Results and recommendations from implementation of the Global Bioenergy Partnership Indicators. https://www.dw.com/en/tv/global-3000/s-11487
  2. UNEP (2019). TECHNICAL REPORT of SUSTAINABILITY OF SUGARCANE BAGASSE BRIQUETTES AND CHARCOAL VALUE CHAINS IN KENYA: Results and recommendations from implementation of the Global Bioenergy Partnership Indicators. https://www.dw.com/en/tv/global-3000/s-11487
  3. Miyashita, Hisaya and Ndufa, K. James. (2019). Improvement of Seed Orchards with Progeny Tests and Nondestructive Wood Property Testing in a Tree Breeding Project in Kenya. Proceedings 21st International nondestructive Testing and Evaluation of Wood Symposium, Freiburg, Germany 2019
  4. Ndufa, J.K, Miyashita, H., Bernard Kigwa, B.K., Auka, S. and Muturi, G (2018). Estimating biomass and carbon stocks of Melia volkensii plantation in dryland landscapes of Kenya. In: Ochieng D, Kamondo B and Muturi G (eds) Proceedings of international conference on ‘Project on development of drought tolerant trees for adaptation to climate change in drylands of Kenya’ held at KEFRI headquarters Muguga from 13th-16th February 2017. KEFRI, Kenya.
  5. Ndufa, J.K, Miyashita, H. (2018). Preliminary results on Melia volkensii clonal variation in growth and wood properties in the drylands of Kenya. In: Ochieng D, Kamondo B and Muturi G (eds) Proceedings of international conference on ‘Project on development of drought tolerant trees for adaptation to climate change in drylands of Kenya’ held at KEFRI headquarters Muguga from 13th-16th February 2017. KEFRI, Kenya.
  6. Kigwa B.K., Ndufa, J.K., David K. Muchiri, D.K. and Muturi, G.M (2018). Results of ongoing Melia volkensii spacing and pruning trial in selected drylands sites in Kenya. In: Ochieng D, Kamondo B and Muturi G (eds) Proceedings of international conference on ‘Project on development of drought tolerant trees for adaptation to climate change in drylands of Kenya’ held at KEFRI headquarters Muguga from 13th-16th February 2017. KEFRI, Kenya.
  7. Ndufa, J.K. and Hisaya Miyashita (2017). Clonal variation in growth and wood properties of Melia volkensii in the drylands of Kenya. A Paper Presented at International Conference on Project on Development of drought tolerant trees in the drylands of Kenya on 13-16 February 2017, at Muguga Nairobi, Kenya.
  8. Nakamura, R., Takashi Oyabu, James K. Ndufa, Bernard K. Kigwa, Ken Yoshikawa (2017). Midday transpiration rates and daily pan evaporation from a Melia volkensii plantation during the rainy season in a semi-arid area in Kenya. Tropics Vol. 26(1) 17-25.
  9. Okeyo, M., J. Nicholus, J , A. Luvanda, A. Mwamburi, J. K. Ndufa, N. Bor, and D. Munyao (2016) Extension Approaches In The Promotion Of Melia Volkensii In Lower Eastern, Kenya. International Journal of Applied and Pure Science and Agriculture (IJAPSA). Vol 2. Issue No 6: 2394-823X.
  10. Maobe S.N, Mburu M.W.K, Akundabweni L. S, Ndufa J. K, Mureithi J. G, Gachene C. K. K, Okello J. J, Makini F (2011). Economic Analysis of Mucuna Green Manure Nitrogen Application in Maize Production: I. with Green Manure Incorporation Cost.". In: J. of Sustainable Development in Agriculture & Environment Vol. 6(1): xx-xx: June. 2011.
  11. Walela, C , Ndufa J.K Balozi K,,Oeba V, Welimo M., Paul K.,and Heiko,D. (2010) Biomass carbon: litter quality and implications for carbon sequestration by agroforestry in coastal Kenya World Congress of Soil Science, Soil Solutions for a Changing World 1 – 6 August 2010, Brisbane, Australia. Published on DVD (digital).
  12. Maobe, SN., Mburu, MWK, Akundabweni, LS, Ndufa, JK, Mureithi, JG, Gachene, CKK, Okello, JJ,Makini, F. (2010). Effect of Mucuna Green Manure Rate Applied on Maize Grain Yield During the Application Season. J. of Sustainable Development in Agriculture & Environment Vol. 5(1):54-64 March. 2010 ISSN 0794-8867.
  13. Maobe, SN., Mburu, MWK, Ndufa, JK, Akundabweni, LS, Mureithi, JG., Gachene,CKK, Makini, F and Okello, JJ. (2010. Potential Effect of Mucuna Green Manure Application Rates on the Decomposition and Availability of Nitrogen in Varying Soil Moisture Levels under Greenhouse Conditions. J. of Sustainable Development in Agriculture & Environment Vol. 5(1):75-86 March. 2010 ISSN 0794-8867.
  14. Ndufa, J.K., Gathumbi, S.M., Mwaura, H.M. Giller, K.E., Buresh, R.J and Cadisch, G (2009). Are mixed species fallows providing positive long-term maize yield interaction? Agronomy Journal 101, 1352-1362 . (Peer Reviewed Journal)
  15. Chebii, J, Imo, M. Koech, E. and J.K. Ndufa (2009). Effects of tillage on greenhouse gas emission and nitrogen mineralization under Tephrosia fallows in Nyabeda, Western Kenya. Journal of Agriculture, Pure and Applied Science and Technology (JAPAST). Vol. 2, 76-92.
  16. Poulton, C., Ndufa, J.K and Gitau, M. 2006. The viability of seasonal agricultural lending in Africa: Experiences from SCOBICS in Western Kenya. Submitted to Journal of Development Studies. To be resubmitted.
  17. Baggs EM, Chebii J, Ndufa JK (2006) A short-term investigation of trace gas emissions following tillage and no-tillage of agroforestry residues in western Kenya. Soil and Tillage Research 90, 69-76. (Peer Reviewed Journal)
  18. Millar N, Ndufa JK, Cadisch G, Baggs EM (2004) Nitrous oxide emissions following incorporation of improved-fallow residues in the humid tropics. Global Biogeochemical Cycles 18, GB 1032, doi: 10.1029/2003GB002114. (Peer Reviewed Journal)
  19. Ndufa, J.K.,, Cadisch, G. and Albrecht, A. (2003). Quantifying the contribution of legumes above- and belowground N to soil N pools and subsequent crop in improved fallow system using in situ15N labeling techniques in Western Kenya. A paper presented to the 3RCM on “The Use of Nuclear Techniques For Developing Integrated Nutrient and Water Management Practices for Agroforestry Systems” (D1-20.07), 2 – 6 June, Colombo, Sri Lanka.
  20. Cadisch, G., Ndufa, J.K., Yasmin, K., Mutuo, P., Baggs, E.M., Keerthisinghe, G. and Albrecht, A. (2002). Use of stable isotopes in assessing belowground contributions to N and soil organic matter dynamics. In 17th World Congress of Soil Science Conference ‘Soil Science: Confronting New Realities in the 21st Century’. ISSS, Bangkok, Thailand.
  21. Baggs, E.M., Cadisch, G., Verchot, L.V., Millar, N. and Ndufa, J.K. (2002). Environmental impacts of tropical agricultural systems: N2O emissions and organic matter management. In 17th World Congress of Soil Science Conference ‘Soil Science: Confronting New Realities in the 21st Century’. ISSS, Bangkok, Thailand.
  22. Ndufa, J.K. (2001). Nitrogen and soil organic matter benefits to maize by fast-growing pure and mixed species legume fallows in Western Kenya. Ph.D. Thesis, Imperial College at Wye, University of London. pp. 323.
  23. Ndufa J.K., Cadisch, G., Giller, K.E. and Albrecht, A. (2001). Short-term effects of pure and mixed species fallows on 15N availability and N distribution in soil particle size fraction in western Kenya. In “11th Nitrogen Workshop, Book of Abstracts”. INRA, Reims, France. pp. 161 -162.
  24. Millar, N, Baggs, E.M., Ndufa, J.K., and Cadisch G. (2001). Emissions of nitrous oxides from an improved fallow system in Kenya. In “11th Nitrogen Workshop, Book of Abstracts”. INRA, Reims, France. pp. 149 – 150.
  25. Ndufa, J.K., Cadisch, G. and Albrecht, A. (2001). Quantifying the contribution of legumes root N to soil N pools and subsequent crop in improved fallow system using in situ15N labeling techniques in Western Kenya. A paper presented to the 2nd RCM on “The Use of Nuclear Techniques For Developing Integrated Nutrient and Water Management Practices for Agroforestry Systems” (D1-20.07), 7-11 May, Kuala Lumpur, Malaysia.
  26. Gathumbi, S. M., J. K. Ndufa, K. E. Giller, and G. Cadisch. (2001). Do species mixtures increase above- and below-ground resource capture in woody and herbaceous legumes? Agronomy Journal 94:518 - 526. (Peer Reviewed Journal)
  27. Gathumbi, S. M., Ndufa, J. K., Giller, K. E., Buresh, R. J., and Cadisch, G., (2000). Mixed species fallows: complementarity or competition in growth resource utilization In “ASA-CSSA-SSSA 92st Annual Meeting Abstracts” pp. 60. ASA-CSSA-SSSA, Madison, Wisconsin, U.S.A.
  28. Gathumbi, S. M., Ndufa, J. K., Cadisch, G., Buresh, R. J., and Giller, K. E. (1999). Above- and below-ground resource utilization by legume mixtures in western Kenya. In “ASA-CSSA-SSSA 91st Annual Meeting Abstracts”. ASA-CSSA-SSSA, Madison, Wisconsin, U.S.A. pp. 229.
  29. 29. Ndufa, J. K., Shepherd, K.D., Buresh, R.J. and Jama, B. (1999). Nutrient uptake and growth of young trees in a P-deficient soil: tree species and phosphorus effects. Forest Ecology and Management 122:231-241. *(Peer Reviewed Journal)*
  30. Jama, B., Buresh, R.J., Ndufa, J.K. and Shepherd, K.D. (1998). Vertical distribution of tree roots and nitrate at two soil phosphorous levels. Soil Science Society of America journal 62: 280-286. (Peer Reviewed Journal)
  31. Swinkels, R. A , and Franzel S, Shepherd, K.D., Ohlsson, E. and Ndufa, J.K. (1997). The economics of short rotation improved fallows: evidence from areas of high population density in western Kenya. Agricultural Systems . 55:99-121. (Peer Reviewed Journal)
  32. Shepherd, K.D., Ndufa, J.K., Ohlsson, E., Sjogren, H and Swinkels R.A. (1997). Adoption potential of Hedgerow intercropping in the maize based cropping systems in the highland of western Kenya. I. Background and agronomic evaluation. Experimental Agriculture . 33:197–209. (Peer Reviewed Journal)
  33. Buresh, R.J., Jama, B and Ndufa, J.K (1996). Agroforestry trees for nutrient cycling and sustainable management. East African Agricultural and Forestry Journal. 62: 115 – 127.
  34. Jama, B., Buresh, R.J., Ndufa, J.K. and Shepherd, K.D. (1996). Vertical distribution of tree roots and nitrate at two soil phosphorous levels. Poster presented to the American Society of Agronomy Meeting, November 3-8 1996, Indianapolis,Indiana. Agronomy Abstract 1997 .
  35. Shepherd K.D., Ohlsson E., Okalebo J.R., Ndufa J.K. and David S (1995). A static model of nutrient flow on mixed farms in the highlands of western Kenya to explore the possible impact of improved management. In: Powell JM, Fernandez-Rivera S,Williams TO, Renard C (eds) Livestock and sustainable nutrient cycling in mixed farming systems of sub-Saharan Africa. Vol II. Technical Papers. Proceedings of theInternational Conference held 22-26 November 1993, Addis Ababa, Ethiopia. International Livestock Centre for Africa, Addis Ababa, pp. 523-538.
  36. Ndufa J.K., Ohlsson E. and Shepherd K.D. (1992). Participatory research methods for agroforestry technology development in western Kenya. Towards a new paradigm for farming system research extension. Working Paper set for the 12th Annual farming Systems Symposium. The association of Farming Systems Research/Extension, Michigan State University, pp. 111-125.
  37. Shepherd, K.D, Ohlsson E., Okalebo, J.R. and Ndufa J.K. (1996). Potential impact of agroforestry on soil nutrient balances at the farm scale in the East African highland. Fertilizer Research . 44:87-99. (Peer Reviewed Journal)
  38. Shepherd, K.D., Jefwa, J., Wilson, J., Ndufa, J.K., Ingleby, K and Mbuthia, K.W. (1996). Infection potential of farm soils as mycorrhizal inocula for Leucaena leucocephala. Biology and Fertility of soils. 22:16-21. (Peer Reviewed Journal)

Books Chapter

  1. Muturi, G.M. Ndufa, J.K. and Takeda, Y. (2016). Introduction. In Kamondo, B.M., Kariuki, J.G., Luvanda, A.M., Muturi, G.M. and Ochieng, D (2016) (eds). Guideline on Production, Distribution, and Use of Improved Melia Seed and Seedlings in the Drylands of Kenya. KEFRI, 38pp.
  2. Luvanda, A.M., Ogawa, S., Ndufa, J.K., and Musyoki, J (2016). Demonstration of improved melia seed and seedlings. In Kamondo, B.M., Kariuki, J.G., Luvanda, A.M., Muturi, G.M. and Ochieng, D (2016) (eds). Guideline on Production, Distribution, and Use of Improved Melia Seed and Seedlings in the Drylands of Kenya. KEFRI, 38pp.
  3. Wilson, J and Ndufa, J.K (2013). Soil moisture. In Benefits from the ecosystem services provided by trees: Treesilience: An assessment of the resilience provided by trees in the drylands of Eastern Africa. ICRAF/UKaid. 112pp.
  4. Nyamai, D and Ndufa, J.K (2013). Domesticating Melia volkensii; improving livelihood in Kenya drylands. In Resilience at livelihood and ecosystem level: building the case. Treesilience: An assessment of the resilience provided by trees in the drylands of Eastern Africa. ICRAF/UKaid. 112pp.
  5. Walela C., Ndufa J., Balozi K., Oeba O., Welimo M. (2011) Evaluation of Establishment, Biomass Productivity and Quality of Improved Fallow Species in a Ferralic Arenosol at Coastal Region in Kenya. In: Bationo A., Waswa B., Okeyo J., Maina F., Kihara J. (eds) Innovations as Key to the Green Revolution in Africa. Springer, Dordrecht
  6. Ndufa, J.K., Albrecht, A., G. Keerthisinghe, G. and Cadisch, G. 2008. Quantifying the contribution of legumes above- and belowground n to soil n pools and subsequent crop in improved fallow system using in situ 15N labelling techniques in western Kenya. In Management of Agroforestry Systems for enhancing Resource use Efficiency and Crop Productivity. IAEA-TECDOC-160. Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture.
  7. Maobe, S. N., Mburu, M.W.K., Ndufa, J.K. Akundabweni L. S.M., 2008. Legume biomass quantity requirement for maize production with reference to mucuna green manure in Kenya, In: Proceedings of the XXI International Grassland Congress and VIII International Rangeland Congress: Multifunctional Grasslands in a Changing World. Volume II. 29th June - 5th July, Hohhot, China. pp. 239.
  8. NdufaJ.K, G.Cadisch, C. Poulton, Q. Noordin and B. Vanlauwe (2007). Integrated Soil Fertility Management and Poverty Traps in Western Kenya. In Advances in Integrated Soil Fertility Management in sub-Saharan Africa: Challenges and Opportunities Bationo, A.; Waswa, B.; Kihara, J.; Kimetu, J., Eds.). Springer, Dordrecht, The Netherlands. pp. 1061 – 1076.
  9. Mafongoya, P.L., Giller, K.E, Odee, D., Bala, A. Ndufa, J.K., Gathumbi, S. and Sitompul. (2003). Benefiting from N2-fixation and managing rhizobia; Belowground transfer and contribution to subsequent crops. In Cadisch et al. eds. CAB International, Wallingford, UK. pp. 143 – 154.
  10. Cadisch, G., S. M. Gathumbi, J. K. Ndufa, and K. E. Giller. (2002). Resource acquisition of mixed species fallows-competition or complementarity? In “Balanced Nutrient Management Systems for the Moist Savanna and Humid Forest Zones of Africa” (B. Vanlauwe, J. Diel, N. Sanginga, and R. Merckx, eds). CAB International, Wallingford, UK. pp. 143 – 154.
  11. Swinkels, R.A., S. Franzel, K. D. Shepherd,E. Ohlsson, J. K. Ndufa. (2002). The Adoption Potential of Short Rotation Improved Tree Fallows: Evidence from Western Kenya. In “Trees on the Farm: Assessing the Adoption Potential of Agroforestry Practices in Africa”. (S. Franzel and .S. J. Scherr, eds). CAB International, Wallingford, UK. pp. 65 - 88.
  12. Swinkels, R.A., K. D. Shepherd, S. Franzel, J. K. Ndufa, E. Ohlsson, H. Sjogren. (2002). Assessing the Adoption Potential Of Hedgerow Intercropping For Improving Soil Fertility, Western Kenya. In “Trees on the Farm: Assessing the Adoption Potential of Agroforestry Practices in Africa”. (S. Franzel and .S. J. Scherr, eds). CAB International, Wallingford, UK. pp. 89 – 110.
  13. Franzel, S., J. K. Ndufa, O. C. Obonyo, T.E. Bekele, and R.Coe. (2002). Farmer-Designed Agroforestry Trials: Farmers’ Experiences in Western Kenya. In “Trees on the Farm: Assessing the Adoption Potential of Agroforestry Practices in Africa”. (S. Franzel and .S. J. Scherr, eds). CAB International, Wallingford, UK. pp. 111 – 124.
  14. Baggs, EM, Millar, N, Ndufa, JK and Cadisch, G. (2000). Effect of residue quality on N2O emissions from tropical soils. In “Sustainable Management of Soil Organic Matter” (R.M. Rees, B.C. Ball, C.D. Campbel and C.A. Watson, eds). CAB International, Wallingford, UK. pp. 120 – 125.

Technical Notes /Protocols/Guidelines

  1. UN Environment Programme (2019). Building capacity for enhancing bioenergy sustainability through the use of the global bioenergy partnership indicators. Overview of the project. GOK, SEI, ICRAF, KEFRI, Strathmore University and GBEP. Supported by Germany Federal Ministry for the Environment, Nature Conservation and Nuclear Safety.
  2. UN Environment Programme (2019). Sustainability of sugarcane bagasse briquettes and charcoal value chains in Kenya. Results and recommendations from implementation of the global bioenergy partnership indicators. Technical report. GOK, SEI, ICRAF, KEFRI, Strathmore University and GBEP. Supported by Germany Federal Ministry for the Environment, Nature Conservation and Nuclear Safety.
  3. UN Environment Programme (2019). Sustainability of sugarcane bagasse briquettes and charcoal value chains in Kenya. Results and recommendations from implementation of the global bioenergy partnership indicators. Summary. GOK, SEI, ICRAF, KEFRI, Strathmore University and GBEP. Supported by Germany Federal Ministry for the Environment, Nature Conservation and Nuclear Safety.
  1. KEFRI/JIFPRO (2014). Tree planting and management techniques under limited water availability: Guideline for Framers and Extension Agents. 13pp (Contributors: Gabriel M. Muturi, James K. Ndufa, Josephine Musyoki, David K. Muchiri, Bernard K. Kigwa and Damaris Munyao).
  2. KEFRI/JIFPRO (2014). Re-afforestation and water conservation in drylands: Guideline for Students and Researchers. 82 pp (Contributors: Gabriel M. Muturi, James K. Ndufa, Josephine Musyoki, David K. Muchiri, Bernard K. Kigwa and Damaris Munyao).
  3. Ndufa, J.K., Wasonga, D., Maina, P., Poulton, C. and Cadisch, G. 2005. Biophysical survey. Annex C of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 35pp. http://www.nrsp.org/database.
  4. Poulton, C., Ndufa, J.K., Ogolla, G. and Maina, P. 2005. Impact survey. Annex B of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 76pp. http://www.nrsp.org/ database.
  5. Poulton C, and Ndufa J.K. 2005. Linking soil fertility and improved cropping strategies to development. Scientific report. Annex A of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 62pp. http://www.nrsp.org/database.
  6. Ndufa, J.K., Wasonga, D., Maina, P., Poulton, C. and Cadisch, G. 2005. Biophysical survey. Annex C of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 35pp. http://www.nrsp.org/database.
  7. Poulton, C., Ndufa, J.K., Ogolla, G. and Maina, P. 2005. Impact survey. Annex B of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 76pp. http://www.nrsp.org/database.
  8. Poulton C, and Ndufa J.K. 2005. Linking soil fertility and improved cropping strategies to development. Scientific report. Annex A of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 62pp. http://www.nrsp.org/database.
  9. Ndufa, J.K. 2005. Advancing the use of the products of NRSP's past and current research projects in Eastern Africa. Final Technical Report of project R8400. Kisumu, Kenya: KEFRI. 29pp.http://www.nrsp.org/database.
  10. Ndufa, J.K., Semalulu, O., Sanginga, P., Noordin, Q., Kayanda, S., Obaga, S., Kasule, J., Lwasa, J. and Nyagot, C. 2005. Advancing the use of the products of NRSP's past and current research projects in Eastern Africa. Scientific report. Annex A of the Final Technical Report of project R8400. Kisumu, Kenya: KEFRI. 42pp.http://www.nrsp.org/ database.
  11. Ndufa, J.K, Sanginga, P.C., Kayanga, S. and Noordin, Q. 2005. Tracking the use, uptake and conditions for sustainability of communication products. Annex C of the Final Technical Report of project R8400. Kisumu, Kenya: KEFRI. 34pp. http://www.nrsp.org/database

Project Technical reports

  1. UN Environment Programme (2019). Building capacity for enhancing bioenergy sustainability through the use of the global bioenergy partnership indicators. Overview of the project. GOK, SEI, ICRAF, KEFRI, Strathmore University and GBEP. Supported by Germany Federal Ministry for the Environment, Nature Conservation and Nuclear Safety.
  2. UN Environment Programme (2019). Sustainability of sugarcane bagasse briquettes and charcoal value chains in Kenya. Results and recommendations from implementation of the global bioenergy partnership indicators. Technical report. GOK, SEI, ICRAF, KEFRI, Strathmore University and GBEP. Supported by Germany Federal Ministry for the Environment, Nature Conservation and Nuclear Safety.
  3. UN Environment Programme (2019). Sustainability of sugarcane bagasse briquettes and charcoal value chains in Kenya. Results and recommendations from implementation of the global bioenergy partnership indicators. Summary. GOK, SEI, ICRAF, KEFRI, Strathmore University and GBEP. Supported by Germany Federal Ministry for the Environment, Nature Conservation and Nuclear Safety.
  1. KEFRI/JIFPRO (2014). Tree planting and management techniques under limited water availability: Guideline for Farmers and Extension Agents. 13pp (Contributors: Gabriel M. Muturi, James K. Ndufa, Josephine Musyoki, David K. Muchiri, Bernard K. Kigwa and Damaris Munyao).
  2. KEFRI/JIFPRO (2014). Re-afforestation and water conservation in drylands: Guideline for Students and Researchers. 82pp (Contributors: Gabriel M. Muturi, James K. Ndufa, Josephine Musyoki, David K. Muchiri, Bernard K. Kigwa and Damaris Munyao).
  3. Ndufa, J.K., Wasonga, D., Maina, P., Poulton, C. and Cadisch, G. 2005. Biophysical survey. Annex C of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 35pp. http://www.nrsp.org/database.
  4. Poulton, C., Ndufa, J.K., Ogolla, G. and Maina, P. 2005. Impact survey. Annex B of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 76pp. http://www.nrsp.org/ database.
  5. Poulton C, and Ndufa J.K. 2005. Linking soil fertility and improved cropping strategies to development. Scientific report. Annex A of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 62pp. http://www.nrsp.org/database.
  6. Ndufa, J.K., Wasonga, D., Maina, P., Poulton, C. and Cadisch, G. 2005. Biophysical survey. Annex C of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 35pp. http://www.nrsp.org/database.
  7. Poulton, C., Ndufa, J.K., Ogolla, G. and Maina, P. 2005. Impact survey. Annex B of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 76pp. http://www.nrsp.org/database.
  8. Poulton C, and Ndufa J.K. 2005. Linking soil fertility and improved cropping strategies to development. Scientific report. Annex A of the Final Technical Report of project R7962. London: Imperial College London and Kisumu, Kenya: KEFRI. 62pp. http://www.nrsp.org/database.
  9. Ndufa, J.K. 2005. Advancing the use of the products of NRSP's past and current research projects in Eastern Africa. Final Technical Report of project R8400. Kisumu, Kenya: KEFRI. 29pp.http://www.nrsp.org/database.
  10. Ndufa, J.K., Semalulu, O., Sanginga, P., Noordin, Q., Kayanda, S., Obaga, S., Kasule, J., Lwasa, J. and Nyagot, C. 2005. Advancing the use of the products of NRSP's past and current research projects in Eastern Africa. Scientific report. Annex A of the Final Technical Report of project R8400. Kisumu, Kenya: KEFRI. 42pp.http://www.nrsp.org/ database.
  11. Ndufa, J.K, Sanginga, P.C., Kayanga, S. and Noordin, Q. 2005. Tracking the use, uptake and conditions for sustainability of communication products. Annex C of the Final Technical Report of project R8400. Kisumu, Kenya: KEFRI. 34pp. http://www.nrsp.org/database

Extension and dissemination publications

  1. Ndufa J.K (2010). Comparing long-term maize yield of mixed species legume fallows with monoculture legume fallows. CSA News Volume 55 No. 01 January 2010.
  2. SCOBICS (2003). Decision support system for integrated nutrient deficiency diagnosis and corrective measures.
  3. SCOBICS (2003). Decision support system for integrated striga management and control.
  4. SCOBICS (2003). Decision support system for integrated and better land management.
  5. Ndufa J.K. (2005). Integrated striga sontrol strategies for increased crop yield and Food. NRSP/COSOFAP/Rockfeller
  6. Ndufa, J.K and Cadisch, G (2005) One-Stop Shop: Coordinating Agricultural Services, Technical Information, Inputs Supplies, Credit and Marketing. 2002 - 2003 Research Highlights. Natural Resources Systems Programme
  7. Ndufa, J.K, Gathumbi, S, Cadisch, G and Giller, K. (2005). Mixed species improved fallows for Western Kenya. These recommendations derived from a DFID (Natural Resources Systems Programme, project No. R7056)/EU (Pilot project) funded project
  8. Ndufa J. K et al (2002). Mixed species fallows for western Kenya (Project R7056)/EU. DFID Extension Material. In On-line Extension Material: Cover Crops/Green Manures/Fallows for small-scale farming in tropics. CIEPCA with CIIFAD/MOIST Technical Support.
  9. Cadisch, G. and Ndufa, J.K. (2001). Improving fallows? Natural Resources Systems Programme Research Highlights 1999-2000. NRSP pp. 18-20.
  10. Franzel, S., Holding, C., Ndufa, J.K., Obonyo, O.C. and Weru, S.M. 1999. Agricultores yarboles: Ligando la investigacion con la extension. Agroforesteria en las Americas Extension Agroforestal CATIE/ICRAF 6:21: 18 – 20.
  11. Anyonge, C.H., Franzel, S., Ndufa, J.K. 1997. A methodology for three-way Dialogue between Farmer, Researcher and Extensionist. Proceedings of IUFRO working Party S6.06-03 Extension Symposium 1997 in Kenya-Forestry Extension: Science and Practice for 21st Century.
  12. Franzel, S., Holding, C., Ndufa, J.K., Obonyo, O.C. and Weru, S.M. 1996. Farmers and trees-linking research and extension. Agroforestry Today 8:3:19-21.
  13. Anyonge, C.H., Franzel, S., Ndufa, J.K. and Weru, S.M. 1996. Farmer-designed trials in agroforestry- a methodology for 3 way dialogue between farmers, researchers and extensioners. A paper submitted to ODI Agricultural Administration Networks Series.

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