Njogo S M., Otinga A, N., Njoroge, R. and Ronoh E, K. Farmyard manure, Lime and Zn application for
optimized maize response to NPK fertilizer in smallholder farming systems. Nutrient Cycling in
Agroecosystems. In press.
Ronoh E. K, Njoroge R, Njogo S. M & Otinga A. N (In Press). Poorly Responsive Soils Cause Maize
Yield Gaps in Smallholder Cropping Systems of Western. Geoderma: The Global Journal of Soil Science.
E. K. RONOH, A. N. OTINGA, R. NJOROGE, D. ROOBROECK, S. NJOGO and G. NZIGUHEBA (2019). Poorly
responsive soils reduce soybean yields in smallholder farming systems of western Kenya. African
Journal of Rural Development, Vol. 4 (3). pp.
S. M. Njogo, A. Otinga, R. Njoroge, and E. K. Ronoh. (2018). Effect of soil amendments on
availability of soil phosphorus and uptake by maize in Vihiga County, western Kenya. African Journal
of Rural Development. Vol 3(4). pp 1013-1023.
Ronoh, E. K. Otinga, A. N., Nziguheba, G., Roobroeck, D. & Okalebo, J. R. (2016). The occurrence of
non-responsive soils in smallholder cereal-legume based cropping systems of western Kenya. Published
in the Proceedings of the 3rd International Interdisciplinary Conference (IIC3), 7-9th September,
2016, University of Eldoret, Eldoret, Kenya.
Njogo, S., Otinga, A., Njoroge, R., Kitilit, J., Chemutai, M., Pepela, M., Ronoh, E., Munini, B.
and Okalebo, J. R. (2016). Evaluation of Fertilizer Types Used for Maize Production in Integrated
Crop-Livestock Systems of Vihiga County in Western Kenya. Proceedings of the 3rd International
Interdisciplinary Conference (IIC3), 7-9 September 2016, University of Eldoret, Eldoret, Kenya. Pp.
R. E. Kiplangat, V. S. Omenyo, R. Njoroge, J. R. Okalebo, and O. N.Ahoya. (2013). Efficacies of
liming and phosphorus fertilizer materials on maize growth in Siaya and
Kakamega counties’ soils in Kenya. Proceedings of the 11th African Crop Science Society Conference
14-17th October, 2013, Entebbe, Uganda. Pp. 217-218.
December, 2020 to Date
: Research Scientist - Hydrology. Kenya Forestry Research Institute (KEFRI).
October 2017 to June 2020
: Graduate Research Assistant. Outreach and International Students’ Centre (OISC), University of
Jan 2017 to Sept. 2017
: Research Assistant. Collaborative Crop Research Program (CCRP) Project - McKnight Foundation.
May to Dec 2016
: Intern. Collaborative Crop Research Program (CCRP) Project - McKnight Foundation.
Jan 2016 to April 2016
: Research Assistant. Purdue University - International Livestock Research Institute (ILRI) project.
Aug 2013 to Dec. 2015
: Graduate Research Assistant. NSF_BREAD Project -International Institute for Tropical Agriculture
Jan 2013 to Aug 2013
: Graduate Research Assistant. Agricultural Development Corporation (ADC).
May to August 2011
: Undergraduate Student Attaché. Ministry of Agriculture, Eldoret West District (Wareng).
May 2007- July 2008
: High School Teacher. Seretut Secondary School in Kericho County, Belgut Subcounty.
: University of Eldoret. PhD. (Environmental Soil Science) (Ongoing).
2014 to 2018
: University of Eldoret, Eldoret. Master of Science (Soil Science). Thesis title: ‘Selected
Rehabilitative Measures Increases Maize and Soybean Yields in Poorly Responsive Soils of Western
Aug 2008 to April 2012
: Moi University, Eldoret. Bachelor of Science in Agricultural Biosystems and management. Attained
2nd Class (Honours), Upper Division.
Jan 2003 to Nov 2006
: Kericho High School, Kericho County. Kenya Certificate of Secondary Education (KCSE). Attained A-
Jan 1994 to Nov 2002
: Seretut Primary School, Kericho County. Kenya Certificate of Primary Education (KCPE).
Research interests are in soils, hydrology, landscape processes and nutrient dynamics on multi-scale
environmental, hydro-pedology, spatiotemporal variations of land degradation, agronomic, ecological,
and agroecosystem sciences. My research activities employ biometrics, GIS & remote sensing, modelling,
and spatial statistical applications to mitigate land degradation, judicious resource use and
efficiency, enhanced natural resource conservation and sustainability, and global food security.
: Fundamentals of Ecosystem Ecology: Biogeochemistry, Energy Flow, and Nutrient Cycling. CARY
Institute of Ecosystem Studies, Millbrook, New York, USA.
: Google Digital Skills for Africa, Centum Learning.
: Principles of ICT for Agriculture.
: Enterprise Resource Planning (ERP): ABN Unisol.
: Geographical Information Systems (GIS) in QGIS, ArcGIS, and GeoMedia.
: Research methods and scientific writing.
: Hands-on training in soil and plant tissue analysis in the lab and also in situ using two field
: Data management, spatial and statistical analysis using ODK, R, QGIS, ArcGIS, and Geomedia.
: “Integrated Project Tropical Agro- and Ecosystems Engineering”, an intense academic field course
offered by the University of Eldoret (Kenya), KU-Leuven (Belgium), and ETH-Zurich (Switzerland) and
Arba Mich University (Ethiopia).
: Master class of introduction to the integration of scientific research approaches.
: Mushroom Cultivation and Spawn Production.
: Health awareness on cancer and HIV & Aids.
: Installation and operating computer software.