| Climate change effects on crop production in Yatta sub-county: farmer perceptions and adaptation strategies BL Agesa, CM Onyango, VM Kathumo, RN Onwonga, GN Karuku African Journal of Food, Agriculture, Nutrition and Development 19 (1 …, 2019 | 38 | 2019 |
| Back to the drawing board: assessing siting guidelines for sand dams in Kenya KNK Ngugi, CMM Gichaba, VMV Kathumo, MWM Ertsen Sustainable Water Resources Management 6 (4), 58, 2020 | 14 | 2020 |
| Effects of tillage practices, cropping systems and organic inputs on soil nutrient content in Machakos County GN Karuku, RN Onwonga, VM Kathumo Journal of Agriculture and Sustainability 12 (1), 2018 | 14 | 2018 |
| Efficiency and interactive effects of tillage practices, cropping systems and organic inputs on soil moisture retention in semi-arid Yatta sub-county, Kenya J Chepkemoi, RN Onwonga, GN Karuku, VM Kathumo | 13 | 2014 |
| Assessing land use and land cover change using participatory geographical information system (PGIS) approach in Nguruman Sub-catchment, Kajiado north Sub county, Kenya MP Adhiambo, G Kironchi, S Mureithi, V Kathumo Journal of Geography and Regional Planning 10 (8), 219-228, 2017 | 11 | 2017 |
| Application of remote sensing and GIS in assessing land use and land cover changes and their impact on hydrological regime in river Gucha catchment, Kenya VM Kathumo University of Nairobi, Kenya, 2011 | 7 | 2011 |
| Assessment of trends in land cover and crop type change over two decades in Yatta sub county, Kenya BA Liavoga, VM Kathumo, RN Onwonga, GN Karuku, CM Onyango Int. J. Agric. For. Fish 2, 46-52, 2014 | 6 | 2014 |
| Simulating soil moisture under different tillage practices, cropping systems and organic fertilizers using cropsyst model, in Matuu division, Kenya. MN Muli, RN Onwonga, GN Karuku, VM Kathumo, MO Nandukule University of Nairobi, 2015 | 5 | 2015 |
| Assessment of soil nutrient balances in organic based cassava (Manihot esculenta Crantz) and sorghum (Sorghum bicolor (L.) Moench) cropping systems of Yatta Subcounty, Kenya NL Namoi, RN Onwonga, CM Onyango, GN Karuku, VM Kathumo American Journal of Experimental Agriculture 4 (12), 1557-1578, 2014 | 5 | 2014 |
| Effects of land-use and climate changes on hydrological processes in the River Gucha catchment, Kenya. VM Kathumo, P Okinda-Owuor, PC Kariuki CAB Direct, 2020 | 4 | 2020 |
| Is lower Tana River Forest complex and ecosystem under threat of total destruction? Evidence from participatory GIS VM Kathumo, CKK Gachene, JJ Okello, M Ngigi, M Miruka University of Nairobi, 2015 | 3 | 2015 |
| Influence of Selected Ecological Farming Practices on Soil Moisture Retention and Yield of Sorghum (Sorghum bicolor (L.) Moench) and Cassava (Manihot esculanta Crantz) in Semi … NL Namoi, RN Onwonga, GN Karuku, CM Onyango, VM Kathumo Journal of Agricultural Science 6 (9), 214, 2014 | 3 | 2014 |
| Effects of tillage practices and organic cropping systems on the yield of sorghum (Sorghum bicolor L.) and sweet potato (Ipomoea batatas L) in Yatta Sub-County, Kenya C Janeth, GN Karuku, RN Onwonga, VM Kathumo Journal of Agriculture and Sustainability 12 (2), 2019 | 2 | 2019 |
| The Disappearing Forest: A case study of trends in land use and land cove r change of the threatened Lower Tana River Forest Complex, Coastal Kenya. CKK Gachene, JJ Okelo, M Ngigi, V Kathumo University of Nairobi, 2012 | 2 | 2012 |
| Factors contributing to the spatial variability of Katumani soils, Eastern Kenya VM Kathumo, PT Gicheru, CKK Gachene | 2 | 2009 |
| Establishment of soil management zones based on spatial variability of soil properties for precision agriculture using GIS in Katumani, Machakos district of Kenya VM Kathumo University of Nairobi, 2007 | 2 | 2007 |
| Participatory geographic information systems (pgis) for sustainable natural resource management: the case study of Taita Taveta County, Southern Kenya. JS Mbau, MM Nyangito, CKK Gachene, VM Kathumo, J Worden University of Nairobi, 2015 | | 2015 |
| Influence of Selected Ecological Farming Practices on Soil Moisture Retention and Yield of Sorghum (Sorghum bicolor (L.) Moench) and Cassava (Manihot esculanta Crantz) in Semi … GN Karuku, NL Namoi, RN Onwonga, CM Onyango, VM Kathumo University of Nairobi, 2014 | | 2014 |
| Modeling potential impact of climate change on sorghum and cowpea performance under different tillage and cropping systems in semi-arid areas of Kenya RN Onwonga, KT Kitinya, R Books, F Sheets, R Oer, R Scarda Ruforum, 2014 | | 2014 |
| Assessment of trends in crop type and land cover change using GIS in Yatta sub-county, Kenya. BA Liavoga, VM Kathumo, RN Onwonga, GN Karuku, CM Onyango, ... | | 2014 |
Richard N. Onwonga (PhD)Department of Land Resource Management and Agricultural Technology, University of NairobiBestätigte E-Mail-Adresse bei uonbi.ac.ke
