selected publications
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article
- Application of residue, inorganic fertilizer and lime affect phosphorus solubilizing microorganisms and microbial biomass under different tillage and cropping systems in a Ferralsol. Geoderma. 390. 2021
- Soil health and ecosystem services: Lessons from sub-Sahara Africa (SSA). Geoderma. 370. 2020
- Soil structural degradation and nutrient limitations across land use categories and climatic zones in Southern Africa. Land Degradation & Development. 30:1288-1299. 2019
- Conservation Agriculture Enhances Soil Fauna Richness and Abundance in Low Input Systems: Examples From Kenya. Frontiers in Environmental Science. 7. 2019
- Decision support tools for site-specific fertilizer recommendations and agricultural planning in selected countries in sub-Sahara Africa. Nutrient Cycling in Agroecosystems. 110:343-359. 2018
- Reducing losses but failing to sequester carbon in soils – the case of Conservation Agriculture and Integrated Soil Fertility Management in the humid tropical agro-ecosystem of Western Kenya. AGRICULTURE ECOSYSTEMS & ENVIRONMENT. 254:82-91. 2018
- A review of soil fertility management and crop response to fertilizer application in Ethiopia: towards development of site- and context-specific fertilizer recommendation 2017
- A review of soil fertility management and crop response to fertilizer application in Ethiopia:Towards development of site- and context-specific fertilizer recommendation 2017
- Impact of conservation agriculture on soil health 2017
- Landscape natural resources management using forage grasses and legume intercrops 2017
- Tropical soils can help us make agriculture carbon neutral and meet climate targets 2017
- Determinants of integrated soil fertility management technologies adoption by smallholder farmers in the Chinyanja Triangle of Southern Africa. Land Use Policy. 59:38-48. 2016
- Impact of reduced tillage and crop residue management on soil properties and crop yields in a long-term trial in western Kenya. Soil Research. 54:719-729. 2016
- Understanding variability in crop response to fertilizer and amendments in sub-Saharan Africa. AGRICULTURE ECOSYSTEMS & ENVIRONMENT. 229:1-12. 2016
- Assessment of maize yield gap and major determinant factors between smallholder farmers in the Dedza district of Malawi. Nutrient Cycling in Agroecosystems. 105:291-308. 2016
- Maize response to macronutrients and potential for profitability in sub-Saharan Africa. Nutrient Cycling in Agroecosystems. 105:171-181. 2016
- Nitrogen dynamics and nitrous oxide emissions in a long-term trial on integrated soil fertility management in Western Kenya. Nutrient Cycling in Agroecosystems. 105:229-248. 2016
- Phosphorus in smallholder farming systems of sub-Saharan Africa: implications for agricultural intensification. Nutrient Cycling in Agroecosystems. 104:321-340. 2016
- Long-term effects of TSP and Minjingu phosphate rock applications on yield response of maize and soybean in a humid tropical maize–legume cropping system. Nutrient Cycling in Agroecosystems. 104:79-91. 2016
- Analysis of Crop Nutrient Response Patterns to Guide Site-Specific Fertilizer Recommendations 2016
- Climate-smart soil protection and rehabilitation in Kenya 2016
- Impact of soil conservation practices on soil health, climate smartness and performance of smallholder farms in Western Kenya 2016
- The Role of Forages in Sustainable Intensification of Crop-Livestock Agro-ecosystems in the Face of Climate Change: The Case for Landscapes in Babati, Northern Tanzania 2016
- Minjingu phosphate rock availability in low-pH highly weathered soil as affected by added salts. Scientia Agricola. 72:440-451. 2015
- Agronomic survey to assess crop yield, controlling factors and management implications: a case-study of Babati in northern Tanzania. Nutrient Cycling in Agroecosystems. 102:5-16. 2015
- Crop residue disappearance and macrofauna activity in sub-humid western Kenya. Nutrient Cycling in Agroecosystems. 102:101-111. 2015
- Soil carbon, multiple benefits. Environmental development. 13:33-38. 2015
- Eco efficiency of Integrated Soil Fertility Management in Western Kenya 2014
- Predicting crop yield and response to nutrients from soil spectra: example from Sub-Sahara Africa 2014
- Soil carbon and agricultural productivity: perspectives from Sub-Saharan Africa 2014
- Phosphorus agronomic efficiency in maize-based cropping systems: a focus on western Kenya. Field Crops Research. 150:1-8. 2013
- The Agricultural Model Intercomparison and Improvement Project (AgMIP): Integrated Regional Assessment Projects 2013
- Soil aggregation and total diversity of bacteria and fungi in various tillage systems of sub-humid and semi-arid Kenya. Applied Soil Ecology. 58:12-20. 2012
- Effect of reduced tillage and mineral fertilizer application on maize and soybean productivity. Experimental Agriculture. 48:159-175. 2012
- Beyond Biophysical Recommendations: Towards a New Paradigm 2012
- Building Capacity for Modeling in Africa 2012
- Crop and Soil Response to Tillage and Crop Residue Application in a Tropical Ferralsol in Sub-humid Western Kenya 2012
- Cropping Systems in the Sudano-Sahelian Zone: Implications on Soil Fertility Management over Varied Seasons 2012
- Overview of long term experiments in Africa 2012
- Agronomic use efficiency of N fertilizer in maize-based systems in sub-Saharan Africa within the context of integrated soil fertility management. Plant and Soil. 339:35-50. 2011
- Conservation Tillage, Local Organic Resources, and Nitrogen Fertilizer Combinations Affect Maize Productivity, Soil Structure and Nutrient Balances in Semi-arid Kenya. Nutrient Cycling in Agroecosystems. 90:213-225. 2011
- Effects of Conservation Tillage, Fertilizer Inputs and Cropping Systems on Soil Properties and Crop Yield in Western Kenya 2011
- Effects of conservation tillage, crop residue and cropping systems on changes in soil organic matter and maize-legume production: a case study in Teso District. Nutrient Cycling in Agroecosystems. 88:39-47. 2010
- Strategic phosphorus application in legume-cereal rotations increases land productivity and profitability in Western Kenya. Experimental Agriculture. 46:35-52. 2010
- Effect of small-scale farmers' tree nursery growing medium on agroforestry tree seedlings' quality in Mt. Kenya region. SCIENTIFIC RESEARCH AND ESSAYS. 3:359-364. 2008
- Influence of conservation tillage on soil microbial diversity, structure and crop yields in sub-humid and semi-arid environments in Kenya 2008
- Integrated Nutrient Management: Concepts and Experiencefrom Sub-Saharan Africa 2008
- Soil organic carbon dynamics, functions and management in West African agro-ecosystems. Agricultural Systems. 94:13-25. 2007
- Advances in integrated soil fertility management in sub Saharan Africa: challenges and opportunities. Nutrient Cycling in Agroecosystems. 1-2. 2007
- Appropriate technologies to replenish soil fertility in southern Africa. Nutrient Cycling in Agroecosystems. 76:137-151. 2007
- Partial balance of nitrogen in a maize cropping system in humic nitisol of Central Kenya. Nutrient Cycling in Agroecosystems. 76:261-270. 2007
- Innovations as key to the green revolution in Africa : exploring the scientific facts: abstracts: symposium 2007
- Optimising crop productivity in legume-cereal rotations through nitrogen and phosphorus management in western Kenya 2007
- Soil climate and decomposer activity in sub-Saharan Africa estimated from standard weather station data: A simple climate index for soil carbon balance calculations. AMBIO. 36:379-386. 2007
- Farming in the drylands of West Africa: promising soil fertility restoration technologies 2004
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chapter
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dataset
- Omission trials conducted in 5 countries under AfSIS Phase 1 under CIAT 2018
- Replication Data for: Application of secondary nutrients and micronutrients increases crop yields in sub-Saharan Africa 2017
- Towards understanding fertilizer responses in Ethiopia 2017
- Replication Data for: Maize response to macronutrients and potential for profitability in sub-Saharan Africa 2016
- Improved crop varieties, agronomic practices, soil water conservation practices 2014
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document
- The soil carbon dilemma in the humid tropics: cannot hoard it!? 2017
- Intensification of smallholder livestock production through utilisation of crop residues for livestock feed in Tanzania 2016
- Towards a food secure future: Sharing our research with farmers in Babati District, Tanzania 2016
- Soil degradation in sub-Saharan Africa and crop production options for soil rehabilitation 2015
- Soil health in Southern Africa and implications on sustainable intensification: how much is the gap? 2014
- A practical guide for collecting farmers socio-economic and agronomic data: an AfSIS Project field protocol 2012
- The Agricultural Model Intercomparison and Improvement Project (AgMIP): Integrated Regional Assessment Projects 2012
- Diagnostic trials: a field guide 2011
- Use of mineral and organic inputs to increase land productivity and sustainability with special reference to the drylands of West Africa 2004
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review
- Micronutrient deficiencies in African soils and the human nutritional nexus: opportunities with staple crops. Environmental Geochemistry and Health. 3015-3033. 2020
- Application of secondary nutrients and micronutrients increases crop yields in sub-Saharan Africa. Agronomy for Sustainable Development. 1-14. 2017