Journal papers

Journal papers

Appolinaire Djikeng, Idupulapati M Rao, Donald Njarui, Mupenzi Mutimura, John Caradus, Sita R. Ghimire, Linda Johnson, Juan A Cardoso, Monday Ahonsi, Segenet Kelemu, 2014. Climate-smart Brachiaria grasses for improving livestock production in East Africa. Tropical Grasslands-Forrajes Tropicales 2(1): 38-39.

Chepngetich, E, Bett, E, Nyamwaro, S.O and Kizito Kwena. (2015). Analysis of technical efficiency of sorghum production in lower eastern Kenya. A Data Envelopment Analysis (DEA) approach. Journal of Economics and Sustainable Development, ISSN (Paper) 2222-1700, ISSN (online) 2222-2855.

Gichangi, E.M, Mwangi Gatheru, Njiru, E.N., Mungube, E.O., Wambua, J.M, Wamuongo, J.W. (2015). Assessment of climate variability and change in semi-arid eastern Kenya. Climatic Change Journal 130:287-297.

Gichangi, E.M. and Mnkeni P.N.S. (2016). Bioavailability of Zinc and Lead from a contaminated soil amended with pine bark-goat manure compost. Journal of Plant Nutrition, 39(5): 600-608. http//dx.doi.org/10.1080/01904167.2015.1047519.

Gichangi, E.M., Karanja, N.K. and Wood, C.W. (2006). Composting cattle manure from zero grazing systems with agr o-organic wastes to minimize nitrogen losses in smallholder farms in Kenya. Tropical and Subtropical Agro-ecosystems, 6:57-64.

Gichangi, E.M., Mnkeni, P.N.S, Muchaonyerwa, P. (2012). Evaluation of the heavy metal immobilization potential of pine bark based composts. Journal of Plant Nutrition 35:1853-1865

Gichangi, E.M., Mnkeni, P.N.S. (2009). The effects of goat manure addition on phosphate sorption characteristics of two selected soils from the Transkei region, South Africa. Communication in Soil and Plant Analysis 40:3335-3347.

Gichangi, E.M., Mnkeni, P.N.S., Brookes, P.C. (2009). Effects of goat manure and inorganic phosphate addition on soil inorganic and microbial biomass phosphorus fractions under laboratory incubation conditions. Journal of Soil Science and Plant Nutrition 55: 764-771.

Gichangi, E.M., Mnkeni, P.N.S., Brookes, P.C. (2010). Goat manure application improves phosphate fertilizer effectiveness through enhanced biological cycling of phosphorus.Journal of Soil Science and Plant Nutrition. 56: 853-860

Gichangi, E.M., Mnkeni, P.N.S., Muchaonyerwa, P. (2008) Estimation of phosphate sorption characteristics and requirements for some South African soils. Journal of Agriculture and Rural Development. 109, 139-149.

Gichangi, E.M., Mnkeni, P.N.S., Muchaonyerwa, P. (2008). Determination of the external phosphate requirements of two soils from the Transkei region South Africa in a glasshouse pot experiment.Tropical and Subtropical Agro-ecosystem Journals, 8: 243-250.

Gichangi, E.M., Njarui, D.M.G. and Mwangi Gatheru. (2017). Plant shoots and roots biomass of Brachiaria grasses and their effects on soil carbon in the semi-arid tropics of KenyaTropical and Subtropical Agroecosystems Journal20: 65-74.

Gichangi, E.M., Njarui, D.M.G., Mwangi Gatheru, Keziah, W.N. Magiroi and Sita Ghimire. (2016). Effects of Brachiaria grasses on soil microbial biomass carbon, nitrogen and phosphorus in soils of the semi-arid tropics of Kenya.Tropicaland Subtropical Agroecosystems, 19: 193-203.

Gichangi, E.M., Njarui, D.M.G., Sita Ghimire, Mwangi Gatheru and Magiroi, K.W.N. (2016). Effects of cultivated Brachiaria grasses on soil aggregation and sustainability in semi-arid tropics of Kenya. Tropical and Sub-tropical Agroecosystems, 19:205-217.

Gichangi, E.M., Njarui, D.M.G., Sita Ghimire, Mwangi Gatheru and Magiroi, K.W.N. (2016). Effects of Brachiaria grasses on soil microbial biomass carbon, nitrogen and phosphorous in soils of semi-arid tropics of Kenya. Tropical and Subtropical Agroecosystems, 19:205-217.

Gitari, J.N., Amboga, S., Gitunu, A.M. Muriithi, C., Kanga Lutta Muhammad, Njunguna E. Muriithi, F., Gichangi, E.M. andPelletier, B. (2012). Spatial variation of soil nutrient stocks in the semi-arid Tharaka district of eastern Kenya E. Afr. agric. For. J.,78:113-118.

Itabari, J.K., Kizito Kwena, Esilaba, A.O., Kathuku, A.N., Lutta Muhammad, Mangale, N. and Kathuli, P. (2011). Land and water management research and development in arid and semi-arid lands of Kenya. Andre Bationo, Boaz waswa, Jeremiah M. Okeyo, Fridah Maina and Job M. Kihara (eds.). Innovations as Key to the Green Revolution in Africa (2011). Springer. pp. 427-438. ISBN 978-90-481-2541-8.

Itabari, J.K., Wambua, J.M., Kitheka, S.K., Maina, J.N., Gichangi, E.M. (2003).Effects of water harvesting and fertilizer on yield and water use efficiency of sorghum in semi-arid eastern Kenya.E. Afr. Agric. For. J, 69, 291-295

Kabirizi, J.M., Mugerwa, S., Ndikumana, J., Njarui, D.M.G., Kaganda, S., Mwilawa, J., Minani, E., Nijimbere, N., Wanyama, J.; Zziwa, E., Nanyeenya, W. and Itabari, J. (2014). Climate change technologies for improved livelihoods of smallholder crop-livestock farmers in eastern and central Africa. Resources and Environment 2014, 4(1): 54-57 DOI: 10.5923/j.re.20140401.06.

Kamau, J., Melis, R., Laing, M., Shanahan, Derera, J., Kahiu Ngugi and Yusuf Migwa. (2016). Farmers’ perceptions of production constraints and preferences in cassava grown in semi-arid areas of Kenya. International Journal of Current Microbiology and Applied Sciences. ISSN: 2319-7706 5(3) pp. 844-859: http://dx.doi.org/10.20546/ijcmas.2016.503.098.

Karanja, N.K., Gichangi, E.M. and Wood, C.W. (2005). Simulation study to assess the potential of selected agro-organic wastes for ability to reduce N volatilization from cow manure. Tropical and Subtropical Agro-ecosystems, 5: 25-31

Kathuli, P. and Itabari, J.K. (2014). In-situ soil moisture conservation: utilization and management of rainwater for crop production. Int. J. Agricultural Resources, Governance and Ecology, 10(3) 295-310. Interscience publishers.

Kathuli, P. and Itabari, J.K. (2015). In-situ soil moisture conservation: utilization and management of rainwater for crop production in semi-arid eastern Kenya. In: Adapting African agriculture to climate change: Transforming rural livelihoods Filho, W.L., Esilaba, A.O., Rao, K.P.C. and Sridhar, G. (eds). Springer International publishing Switzerland 2015, ISBN978-3-319-12999-0, D01.1007/978-3-319-13000-2. , pp 127-142.

Kathuli, P. and Itabari, J.K. (2015). In-situ soil moisture conservation: utilization and management of rainwater for crop production. In: Adapting African agriculture to climate change ‘Transforming rural livelihoods’ (eds). Leah Filho W., Esilaba, A.O., Rao, K.P.C., Sridhar, G. 2015. XI, 233p. 55 illustrations. ISBN 978-3-319-13000-2. Springer international publishing Switzerland.

Kathuli, P., Gachimbi, L.N., Maingi, S.W. and Thuranira, E.G. (2007). Suitability of modified dilute double Acid-Mehlich 1 (0.1NHCL + 0.025NH2SO4) and Olsen (0.5MNaHCO3 PH 8.5) Methods for testing of available phosphorus for Kenyan Soils. Discovery and Innovation journal, 19(3) pp 149-209, ISSN 1015-079X. Academy Science Publishers.

Kathuli, P., Itabari, J.K., Nguluu, S.N. and Gichangi, E.M. (2010). Farmers’ perceptions on sub-soiling/ripping technology for rainwater harvesting in mixed dry land farming areas in eastern Kenya. E. Afr. agric. For. J. 76(2), 103-107.

Kathuli, P., Itabari, J.K., Nguluu, S.N., Sijali, I.V., Gatuthu, J. and Kaura, S. (2013). Soil salinization in selected irrigation schemes in semi-arid lands of Taveta County-Kenya. E. Afr. agric. For. J. 79(2), 57-62.

Kathuli, P., Karanja, D., Kisilu, R. and Njaimwe, A. Sorghum growth and yield response to growth enhancer and zinc micronutrient in semi-arid eastern Kenya. (In press) E. Afri. agric. For. J.

Kathuli, P., Nguluu, S.N., Musyoki R., Fatuma Omari, Matimbii. S.M. and Mutunga, R. (2010). Area adaptability, growth and response to fertilizer application by three common aloe species in a semi-arid eastern Kenya. E. Afr. agric. For. J. (2010)76(1), 31-36.

Kega, V.M., Tende, R. and Mugo, S. (2011). Effects of rearing method on quality and supply of maize stem borers for research use in Kenya. E. Afr. agric. For. J. 76(1).

Kivuva, B.M., Githiri, S.M., Yencho, G.C. and J. Sibiya (2013). Mitigating negative drought effects on sweetpotato productivity through tolerant cultivars in Kenya, APA 2013 abstract: http://sweetpotatoknowledge.org/germplasm/breeding/2013-sweetpotato-breeders-meeting/day-3/pres01-kivuva-mitigating-negative-drought-effects-20130425.pdf.

Kivuva, B.M., Githiri, S.M., Yencho, G.C. and Sibiya, J. (2014). Combining ability and heterosis for yield and drought tolerance traits under managed drought stress in sweetpotato. Euphytica http://www.springer.com/home?SGWID=0-0-1003-0-0&aqId=2714195&download=1&checkval=cfd5c257532709a5fe658bbd6f401a0d

Kivuva, B.M., Githiri, S.M., Yencho, G.C. and Sibiya, J. (2014). Genotype x environment interaction for storage root yield in sweetpotato under managed drought stress conditions. Journal of Agricultural Science 6:41-56. http://www.ccsenet.org/journal/index.php/jas/article/view/33268/22188.

Kivuva, B.M., Githiri, S.M., Yencho, G.C. and Sibiya, J. (2014). Breeding sweetpotato (Ipomoea batatas [L.] Lam.) for drought tolerance in Kenya. A thesis submitted in partial fulfilment of the requirements of the degree of Doctor of Philosophy (PhD) in Plant Breeding African Centre for Crop Improvement (ACCI) School of Agricultural, Earth and Environmental Sciences University of KwaZulu-Natal Pietermaritzburg Republic of South Africa November 2013. http://www.acci.org.za/resources/documents/page_docs/docs/benjamin-kivuva.pdf.

Kivuva, B.M., Githiri, S.M., Yencho, G.C. and Sibiya, J. (2015). Screening sweetpotato genotypes for tolerance to drought stress. Field Crops Research; Final version published online: 23-NOV-2014. Full bibliographic details: Field Crops Research (2015), pp. 11-22. DOI information: 10.1016/j.fcr.2014.10.018. http://authors.elsevier.com/a/1Q4eQ1M2tUyyrs

Kivuva, B.M., Maina, J.M., Mburu, W.M.K., Murdock, A.J., Njuguna J.M. and Mwangi, D.M. (2012). The effects of planting density and weeding regimes on maize as a food and fodder crop. E. Afr. Agric. For. J., 78 (2), 63-74.

Kivuva, B.M., Mburu M.W.K., Maina, J.M. and Murdoch, A.J. (2014). The effects of planting density and weeding regime on maize light and water use. Journal of Agricultural Science (In press, August 2014).

Kivuva, B.M., Musembi, F.J., Githiri, S.M., Yencho, C.G. and Sibiya, J. (2014). Assessment of production constraints and farmers’ preferences for sweetpotato genotypes. Journal of Plant Breeding and Genetics 2(01): 15-29. http://escijournals.net/index.php/JPBG/article/view/524/389.

Kivuva, B.M., Musembi, FJ., Onyango, P.O. and Mare Muya, E. (2016). Sweetpotato Handbook. ISBN. 978-9966-30-034-8.

Kwena Kizito, Karuku, G.N., Ayuke, F.O. and Esilaba, A.O. (2017). The menace of nitrogen deficiency in semi-arid Kenya: can pigeonpea fix it? E. Afr. Agric. and For. J. (In press).

Kwena Kizito, Ndegwa, W., Esilaba, A., Nyamwaro, S., Wamae, D., Matere, S., Kuyiah, J., Ruttoh, R. and Kibue, A.M. (2015). Climate change adaptation planning in Kenya: do scientific evidences really count? In: Adapting African Agriculture to climate change: Transforming rural livelihoods, Filho, W.L., Esilaba, A.O., Rao, K.P.C. and Sridhar, G. (eds). Springer, ISBN978-3-319-12999-0, D01.1007/978-3-319-13000-2.

Kwena, K., Ayuke, F.O., Karuku, G. N. and Esilaba, A.O. (2017). The curse of low soil fertility and diminishing maize yields in semi-arid Kenya: can pigeonpea play savior? Tropical and Sub-Tropical Agro-ecosystems Journal (In press).

Kwena, K., Ayuke, F.O., Karuku, G.N. and Esilaba, A.O. (2017). No rain but bumper harvest: the magic of pigeonpea in semi-arid Kenya. International Journal of Agricultural Resources, Governance & Ecology (In press).

Matere, S.J., Kwena Kizito, Nyamwaro, S.O., Esilaba, A.O., Ndegwa, W., Wamae, D.K., Kuyiah, J.W., Ruttoh, R. and Kibue, A.M. (2015). Analysis of utilization of analytical tools for analyzing climate change impacts on agriculture in Kenya. International Journal of Agricultural Resource, Governance & Ecology, 11:1-10.

Mdenye, B.B., Kinama, J.M., Olubayo, F.M., Kivuva, B.M. and Muthomi J.W. (2016). Effect of storage methods on carbohydrate and moisture of cassava planting materials.Journal of Agricultural Science 8, (12); 2016 ISSN 1916-9752 E-ISSN 1916-9760. Published by Canadian Center of Science and Education. doi:10.5539/jas.v8n12p100 URL: http://dx.doi.org/10.5539/jas.v8n12p100.

Molo, R., Aool, W., Adumo, S. and Mutisya, D.L. (2016). Integrating cassava varieties and Typhlodromulus aripo to sustain biological control of cassava green mite. African Crop Science Journal, 24:117-126. http://dx.doi.org/10.4314/acsj.v24i1.13S

Mugerwa S., J.M. Kabirizi, Njarui, D., Mpairwe, D (2012) Utilization of introduced forages by smallholder dairy farmers in Uganda. International Journal of Biosciences, 2: 36-45.

Mugerwa Swidiq, Sara Babiker, Habonayo Glorios, Nijimbere Aloys, Kayiwa Stephen, Zziwa Emmanuel, Njarui Donald (2011). A comparative analysis of phosphorus fertilizer regimes on seed production of Lablab in East and Central Africa. International Journal of Agronomy and Agricultural Research, 1: 20-27.

Mugo, S., Mwimali Murenga, Karaya, H., Tende, R., Taracha, C., Gichuki, S., Ininda, J., Kinyua M’bijjewe and Chavangi, A. (2011). Control of Busseola fusca and Chilo partellus stem borers by Bacillus thuringiensis (Bt)--endotoxins from Cry1Ab gene Event MON810 in greenhouse containment trials. African Journal of Biotechnology10(23), pp. 4719-4724. http://www.academicjournals.org/AJB. ISSN 1684–5315 ©2011 Academic Journals.

Mugo, S.N., Murenga Mwimali, Taracha, C., Songa, J.M., Gichuki, S.T., Tende, R., Karaya, H., Bergvinson, D.J., Allesandro Pellegrineschi and Hoisington, D.A. (2011). Testing public Bt maize events for control of stem borers in the first confined field trials in Kenya. African Journal of Biotechnology10(23), pp. 4713-4718. http://www.academicjournals.org/AJB. ISSN 1684–5315 ©2011 Academic Journals.

Mulaa, M.M., Bergvinson, D.J., Mugo, S.N., Wanyama, J.M., Tende, R., Hugo De Groote and Tadele Tefera. Evaluation of stem borer resistance management strategies for Bt maize in Kenya based on alternative host refugia. African Journal of Biotechnology 10(23), pp. 4732-4740. http://www.academicjournals.org/AJB. ISSN 1684–5315 ©2011 Academic Journals.

Mungube, E.O., Njarui, D.M.G., Mwangi Gatheru, Kabirizi, J. and Ndikumana, J. (2014). Reproductive and health constraints of dairy cattle in the peri-urban areas of semi-arid eastern Kenya. Livestock Research for Rural Development, 26, Article #98. http://www.lrrd.org/lrrd26/6/mung 26098.htm

Mutavi, S.K., Kanui, T.I., Njarui, D.M., Musimba, N.R, Amwata, D.A. (2016). Innovativeness and Adaptations: The Way forward for small scale peri-urban dairy farmers in semi-arid regions of south eastern Kenya. International Journal of Scientific Research and Innovative Technology, ISSN: 2313-3759. 3(5): 1-14.

Mutisya, D.L. and Omari, F.G. (2014). Environmental factor influence on foliar and stem pests of grain amaranth in low midlands agro-ecological zones of Kenya: correct timing for effective pest management. International Journal of Development Research, 4 (10): 1987-1993.

Mutisya, D.L. El-Banhawy, E.M., Kariuki, C.W. and Khamala, C.P.M. (2014). Typhlodromalus aripo De Leon (Acari: Phytoseiidae) development and reproduction on major cassava pests at different temperatures and humidities: an indication of enhanced mite resilience. Acarologia. 54(4): 395-407. http://dx.doi.org/10.1051/acarologia/20142145

Mutisya, D.L. Gichangi, E.M., Kariuki, C.W. Miano, D. (2014). Effects of soil composition and temperature on cassava green mite and variety cyanogens potentialAcademia Journal of Agricultural Research 2: 114-121.

Mutisya, D.L., Banhawy, E.M., Khamala, C.P.M., Kariuki C.W. and Miano, D.W. (2014). Determination of damage thresholds of cassava green mite (Acari: Tetranychidae) on different cassava varieties. Journal of Plant and Pest Science, 1(2): 79-86.

Mutisya, D.L., Banhawy, E.M., Khamala, C.P.M., Kariuki, C.W., Odongo, D. and Owiti A. (2014). Cassava green mite genetic diversity from three geographical sites in Kenya. Journal of Biodiversity & Environmental Sciences (JBES), 5(4): 504-510.

Mutisya, D.L., El Esayed M. El Banhawy, Dos Santos, V.V., Kariuki, C.W., Khamala, C.P.M. and Marie-Stephane Tixier. (2017). Predatory phytoseiid mites associated with cassava in Kenya, identification key and molecular diagnosis (Acari: Phyotoseiidae). Acarologia 57(3): 541-554. http://dx.doi.org/10.24349/acarologia/20174172

Mutisya, D.L., El-Banhawy, E.M.,Kariuki, C.W., Khamala, C.P.M., Fiaboe,K.K.M. andKungu, M.M. (2012).Effect of the cassava green mite, Mononychellus progresivus, on the development and reproduction of the introduced predatory mite, Phytoseiulus longipes (Acari: Tetranychidae; Phytoseiidae), at different temperatures. Systematic & Applied Acarology, 17(4): 378-383. http://dx.doi.org/10.11158/saa.17.4.5

Mutisya, D.L., El-Banhawy, E.M., Khamala, C.P.M. and Kariuki, C.W. (2015). Management of cassava green mite Mononychellus progresivus (Acari: Tetranychidae) in different agro-ecological zones of Kenya. Systematic and Applied Acarology, 20(1): 39-50. http://dx.doi.org/10.11158/saa.20.1.5

Mutisya, D.L., Karanja, D.R. and Kisilu, R.K. (2016). Economic advantage of sorghum harvest at soft dough to prevent bird damage. Cogent Food and Technology, 2: 1259141. http://dx.doi.org/10.1080/23311932.2016.1259141.

Mutisya, D.L., Kariuki, C.W. and Khamala, C.P. M. (2011). Growth and development of cassava predatory mite under different relative humidity regimes. E. Afr. Agric. For. J. 2(2011): 97-102.

Mutisya, D.L., Khamala, C.P.M., Banhawy, E.M. and Kariuki C.W. (2013). Cassava variety tolerance to spider mite attack in relation to leaf cyanide level.Journal of Biology and Healthcare, 3(5): 45-51.

Mutisya, D.L.,Khamala, C.P.M., Konyango, J.J.J.O., Kamau, C.K. and Matolo, L.K. (2016). Timed strategy for control of bollworm for sustainable sorghum crop yield under varied regimes of rainfall, temperature and soil fertility. Sustainable Agriculture Research, 5(4): 71-80. http://dx.doi.org/10.5539/sar.v5n4p71.

Mutisya, D.L., Molo, R., EL-Banhawy, E.M., Miano, D., Kariuki, C.W., Owiti, A. and Aool, W. (2016). Phylogenetic diversity of cassava green mite, Mononychellus progresivus from different geographical sites in East Africa.African Crop Science Journal, 24:63-71. http://dx.doi.org/10.4314/acsj.v24i1.7S.

Mutisya, D.L., Tadele Tefera and Mugo, S. (2013). Quality of field collected and laboratory rearedChilo partellus (Swinhoe) (Coleoptera: Crambidae) for screening maize genotypes. AfricaJournal of Biotechnology, 12 (34): 5370-5374

Mutisya, D.L., Wambua J.M., Miano, D.W. and Kariuki, C.W. (2015). Farmer perceptions of cassava green mite pest impact in eastern Kenya. Journal of Entomology and Zoological studies, 3(3) 356-358.

Mwangi, T.J.K, Muyekho, F.N, Gatei, J.N, Kathuli, P and Wekesa, F. (1997). A review of soil and soil fertility management practices in the North of the Rift valley province. In: Rees et al (eds). A review of agricultural practices and constraints in the North of Rift valley province Kenya. Pp 27-44. ISBN: 9966-879-36-6.

Nasirembe W.W., Win Kore and Kimani, J. (2014). Development and fabrication and testing of rice seed dresser. Published by the Division of Research and Development (DRD), Ministry of Agriculture Food Security and Cooperatives, Tanzania (drd@kilimo.go.tz); Designed by the Information and Documentation Unit, DRD. July 2014.

Nasirembe, W.W. and Owido, S.F.O. (2016). Characterizing soil physical properties and their influence on moisture retention in eastern Mau, Kenya Innovative Systems Design and Engineering www.iiste.org. ISSN 2222-1727 (Paper) ISSN 2222-2871 (Online) 7(9), 2016 27.

Ndabhemeye Mlengera, Nasirembe Wanjala, Tengambwage, W., Kagema, T., Juma Kayeke and Ndunguru, A. (2015). Promotion of labour saving rice mechanization technologies in rain fed low land and irrigated ecologies of Tanzania. Journal of Natural Science 5(20).

Ndiema, C.K.W., Manga, P.N., Ruttoh, C.R., (2002). Influence of die pressure on relaxation characteristics of briquetted biomass. Energy Conversion and Management, 43(6) pages 2157–2161.

Ngila P, Njarui DM, Musimba NK, Njunie M 2016 Performance of Galla Goats Fed Different Cultivars of Brachiaria in the Coastal Lowlands of Kenya. Journal of Fisheries Livestock Production 5: 210 doi: 10.4172/2332-2608.1000210.

Ngugi, L.W., Rao, K.P.C., Oyoo, A. and Kwena, K. (2015). Opportunities for coping with climate change and variability through adoption of soil and water conservation technologies in semi-arid Eastern Kenya. In: Filho, W.L., Esilaba, A.O., Rao, K.P.C and Sridhar, G. (Eds).Adapting African Agriculture to climate change: Transforming rural livelihoods. Springer. ISBN978-3- 319-12999-0, D01.1007/978-3-319-13000-2.

Nguku, S., Musimba, N. Njarui, D.M.G., Mwobobia, R. and Kaindi, E. (2016). Effects of Acid Scarification on germination of the genus Brachiaria grass Cultivars. International Journal of Scientific Research and Innovative Technology, 3, 45-50.

Nguku, S., Njarui, D.M.G. and Musimba, N.K.R. (2016). Primary production variables of Brachiaria grass cultivars in Kenya dry lands. Tropical and subtropical agroecosystems, 19:29-39.

Nguku,S.A, Musimba, N.K.R., Njarui,D.N., Mwobobia,R.M (2015). The chemical composition and nutritive value ofBrachiaria grass cultivars at Katumani dryland research station in South Eastern Kenya. Journal of Advances In Agriculture, 5,706-717.

Nguluu, S.N, Itabari, J.K., Ikombo, B.M., Wambua, J.M., Gichangi, E.M. (1999). Water application methods for small scale production of tomatoes in the semi-arid areas of eastern Kenya. E. Afr. Agric. For. J 65: 51-56.

Nguluu, S.N, Karanja, J., Kimatu, J.N., Gicheru, P.T., Musimba, N., Njiru, E., Kathuli, P., Nzioki, H., Akuja, T., Muli, B.K. and Nzombe, N.N. (2014). Refining dry land farming systems as a means of enhancing agrodiversity and food security in eastern Kenya. A review. Journal of advances in agriculture vol. 3, No. 1 pp142-149. Publisher. Council for innovative research. www.cirjaa.com. ISSN 2349-0837.

Nguluu, S.N., Karanja, D., Macharia, Kimatu, D., Kimatu J., Karanja, J., Nzioki, H., Kathuli P., Mutisya, D. and Musimba, N. (2014). Responses of different bean genotypes to soil nutrients and water in the semi-arid areas of eastern Kenya. Journal of advances in agriculture, 3(2) pp183-187. Publisher. Council for innovative research. www.cirjaa.com. ISSN 2349-0837.

Njaimwe, A.N. and Mnkeni, P.N.S. (2016). Tillage and crop rotation effects on carbon sequestration and aggregate stability in two contrasting soils at the Zanyokwe Irrigation Scheme, Eastern Cape Province, South Africa. South African Journal of Plant and Soil, 2016: 1-8.

Njarui D M G, Gichangi E M, Gatheru M, Nyambati E M, Ondiko C N, Njunie M N, Ndungu-Magiroi,K,W., Kiiya, W.,W., Kute, C.A.O. and Ayako, W. (2016) A comparative analysis of livestock farming in smallholder mixed crop-livestock systems in Kenya: 2. Feed utilization, availability and mitigation strategies to feed scarcity. Livestock Research for Rural Development. 28, Article #067.

Njarui D M G, Itabari J K, Kabirizi J M and Mwilawa A J 2014 Water sources and quality for dairy cattle in smallholder farms in semi-arid Kenya. Livestock Research for Rural Development, 26, Article #152. http://www.lrrd.org/lrrd26/8/njar26152.htm

Njarui D. M. G., Gatheru M., Mwangi D. M. and Keya, G. A. 2014. Production of giant panicum in semi-arid Kenya.Tropical Grasslands-Forrajes Tropicales, 2(1): 100-102.

Njarui D. M. G., Gatheru M., Wambua J. M., Nguluu S. N., Mwangi D. M. and Keya, G. A. (2011). Consumption patterns and preference of milk and milk products among rural and urban consumers in semi-arid Kenya. Ecology of Food and Nutrition, 50 (3): 240-262

Njarui D. M. G., Gatheru M., Wambua J. M., Nguluu S. N., Mwangi D. M. and Keya, G. A. (2011). Feeding management for dairy cattle in smallholder farming systems of semi-arid tropical Kenya. Livestock Research for Rural Development, 23, Article #111. http://www.lrrd.org/lrrd23/5/njar23111 .htm

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