RP-Department of Environmental Science
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Recent Submissions
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Challenges and Opportunities of Participatory Management of Upland Wetland in Kiambu County, Kenya
(SIB, 2020)Kinyariro MS, Njuguna SG, Macharia G. 2020. Challenges and opportunities of participatory management of Upland Wetland in Kiambu county, Kenya. Bonorowo Wetlands 10: 78-91. Wetlands are continuously degraded through ... -
Factors Influencing Biofuel Production in Western Kenya
(IJLSAR, 2023): Biofuel production is at the forefront of the agenda of many countries across the globe in the quest to lower greenhouse gas emissions and improve energy access. The increase in oil prices and climate change have been ... -
Zai Technology and Integrated Nutrient Management for Improved Soil Fertility and Increased Sorghum Yields in Kitui County, Kenya
(Frontiers in Sustainable food Systems, 2021)Deteriorating soil fertility, low unreliable rainfall and soil moisture stress has resulted to low crop yields among farmers of sub-Saharan Africa (SSA), necessitating a search for more sustainable production practices. ... -
A Quantitative Appraisal of Selected Agroforestry Studies in the Sub-Saharan Africa
(Cell Press, 2022)The multiple ecosystem services and livelihood assets development challenges facing the world, including climate change, land degradation, and high poverty levels, have necessitated cross-cutting solutions. Such ... -
Managing Soil Organic Carbon in Tropical Agroecosystems: Evidence from Four Long-Term Experiments in Kenya
(Copernicus Publications for EGU, 2023)In sub-Saharan Africa, maize is one of the most important staple crops, but long-term maize cropping with low external inputs has been associated with the loss of soil fertility. While adding high-quality organic resources ... -
Maize Grain Yield and Grain Zinc Concentration Response to Zinc Fertilization: A Meta-Analysis
(Cell Press, 2023-05-05)Zinc deficiency in agricultural soils is a current global agroecosystems challenge. Maize exhibits elevated susceptibility to Zn deficiency and low response to zinc fertilization. As a result, there are contradicting ... -
Variations in Plant Nutrient Allocation, Physiological Development Patterns and Soil Structural Characteristics as Influenced by Zero Tillage Systems in the Central Highlands of Kenya
(2022)The global food requirements are projected to rise above the current demand. Surface application of residues in zero tillage results to nitrogen immobilization, posing nutrient use efficiency challenges, while tillage and ... -
Impact of Development and Management Options on Water Resources of the Upper Mara River Basin of Kenya
(Wiley Online Library, 2020)This study employed the Water Evaluation and Planning model to evaluate selected policy-based water development and management options on water resources of the upper Mara Basin of Kenya. The major water resources of the ... -
High Quality Organic Resources are Most Efficient in Stabilizing Soil Organic Carbon: Evidence from Four Long-Term Experiments in Kenya
(Copernicus Publications G{\"o}ttingen, Germany, 2022)In sub-Saharan Africa, long-term maize cropping with low external inputs has been associated with the loss of soil fertility. While adding high-quality organic resources combined with mineral fertilizer has been proposed ... -
Agronomic and Economic Performance of Legume-Legume and Cereal-Legume Intercropping Systems in Northern Tanzania
(Elsevier, 2023)CONTEXT: Cereal-legume intercropping, a common practice among farmers in sub-Saharan Africa (SSA), is important for crop diversification, soil fertility improvement, household nutrition and climate adaptation. However, ... -
The Potential of Zai Pit Technology and Integrated Soil Fertility Management to Enhance Crop Productivity in Semiarid Regions of Sub-Sahara Africa: A Review
(Infogain Publication, 2023)Low and continuously deteriorating soil fertility coupled with frequent droughts and extended mid-season dry spells scenarios brought about by low and unreliable rainfalls have had a significant negative influence on ... -
Combining Manure with Mineral N Fertilizer Maintains Maize Yields: Evidence from Four Long-Term Experiments in Kenya
(Elsevier, 2023)Context: Crop productivity in sub-Saharan Africa cannot be substantially improved without simultaneously addressing short-term crop nutrient demand and long-term soil fertility. Integrated soil fertility management tackles ... -
Socio-Economic and Institutional Factors Affecting Smallholders Farmers to Adopt Agroforestry Practices in Southern Province Of Rwanda
(PeerTechz Publication, 2020)This paper is mainly focused on identifying the socio economic and institutional factors infl uencing agroforestry adoption in Southern Province. Field survey was conducted during July to September, 2019 using structured ... -
Potential Application of DNA Barcoding Technology for Identification of Medicinal Plant Species Traded in Nairobi County, Kenya
(EAJSTI, 2023)There exists a long history of herbal products use but recently there are concerns on authenticity and safety of some these products. Majority of the herbal products traded in Kenyan markets are processed plant parts, which ... -
Soil Water Use Efficiency under Integrated Soil Management Practices in the Drylands of Kenya
(Ssience Direct, 2023)Soil moisture scarcity and soil fertility decline in the drylands contribute to declining crop productivity. The possible synergistic effects of integrating soil & water conservation, and soil fertility management practices ...
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Challenges and Opportunities of Participatory Management of Upland Wetland in Kiambu County, Kenya
(SIB, 2020)Kinyariro MS, Njuguna SG, Macharia G. 2020. Challenges and opportunities of participatory management of Upland Wetland in Kiambu county, Kenya. Bonorowo Wetlands 10: 78-91. Wetlands are continuously degraded through ... -
Factors Influencing Biofuel Production in Western Kenya
(IJLSAR, 2023): Biofuel production is at the forefront of the agenda of many countries across the globe in the quest to lower greenhouse gas emissions and improve energy access. The increase in oil prices and climate change have been ... -
Zai Technology and Integrated Nutrient Management for Improved Soil Fertility and Increased Sorghum Yields in Kitui County, Kenya
(Frontiers in Sustainable food Systems, 2021)Deteriorating soil fertility, low unreliable rainfall and soil moisture stress has resulted to low crop yields among farmers of sub-Saharan Africa (SSA), necessitating a search for more sustainable production practices. ... -
A Quantitative Appraisal of Selected Agroforestry Studies in the Sub-Saharan Africa
(Cell Press, 2022)The multiple ecosystem services and livelihood assets development challenges facing the world, including climate change, land degradation, and high poverty levels, have necessitated cross-cutting solutions. Such ... -
Managing Soil Organic Carbon in Tropical Agroecosystems: Evidence from Four Long-Term Experiments in Kenya
(Copernicus Publications for EGU, 2023)In sub-Saharan Africa, maize is one of the most important staple crops, but long-term maize cropping with low external inputs has been associated with the loss of soil fertility. While adding high-quality organic resources ... -
Maize Grain Yield and Grain Zinc Concentration Response to Zinc Fertilization: A Meta-Analysis
(Cell Press, 2023-05-05)Zinc deficiency in agricultural soils is a current global agroecosystems challenge. Maize exhibits elevated susceptibility to Zn deficiency and low response to zinc fertilization. As a result, there are contradicting ... -
Variations in Plant Nutrient Allocation, Physiological Development Patterns and Soil Structural Characteristics as Influenced by Zero Tillage Systems in the Central Highlands of Kenya
(2022)The global food requirements are projected to rise above the current demand. Surface application of residues in zero tillage results to nitrogen immobilization, posing nutrient use efficiency challenges, while tillage and ... -
Impact of Development and Management Options on Water Resources of the Upper Mara River Basin of Kenya
(Wiley Online Library, 2020)This study employed the Water Evaluation and Planning model to evaluate selected policy-based water development and management options on water resources of the upper Mara Basin of Kenya. The major water resources of the ... -
High Quality Organic Resources are Most Efficient in Stabilizing Soil Organic Carbon: Evidence from Four Long-Term Experiments in Kenya
(Copernicus Publications G{\"o}ttingen, Germany, 2022)In sub-Saharan Africa, long-term maize cropping with low external inputs has been associated with the loss of soil fertility. While adding high-quality organic resources combined with mineral fertilizer has been proposed ... -
Agronomic and Economic Performance of Legume-Legume and Cereal-Legume Intercropping Systems in Northern Tanzania
(Elsevier, 2023)CONTEXT: Cereal-legume intercropping, a common practice among farmers in sub-Saharan Africa (SSA), is important for crop diversification, soil fertility improvement, household nutrition and climate adaptation. However, ... -
The Potential of Zai Pit Technology and Integrated Soil Fertility Management to Enhance Crop Productivity in Semiarid Regions of Sub-Sahara Africa: A Review
(Infogain Publication, 2023)Low and continuously deteriorating soil fertility coupled with frequent droughts and extended mid-season dry spells scenarios brought about by low and unreliable rainfalls have had a significant negative influence on ... -
Combining Manure with Mineral N Fertilizer Maintains Maize Yields: Evidence from Four Long-Term Experiments in Kenya
(Elsevier, 2023)Context: Crop productivity in sub-Saharan Africa cannot be substantially improved without simultaneously addressing short-term crop nutrient demand and long-term soil fertility. Integrated soil fertility management tackles ... -
Socio-Economic and Institutional Factors Affecting Smallholders Farmers to Adopt Agroforestry Practices in Southern Province Of Rwanda
(PeerTechz Publication, 2020)This paper is mainly focused on identifying the socio economic and institutional factors infl uencing agroforestry adoption in Southern Province. Field survey was conducted during July to September, 2019 using structured ... -
Potential Application of DNA Barcoding Technology for Identification of Medicinal Plant Species Traded in Nairobi County, Kenya
(EAJSTI, 2023)There exists a long history of herbal products use but recently there are concerns on authenticity and safety of some these products. Majority of the herbal products traded in Kenyan markets are processed plant parts, which ... -
Soil Water Use Efficiency under Integrated Soil Management Practices in the Drylands of Kenya
(Ssience Direct, 2023)Soil moisture scarcity and soil fertility decline in the drylands contribute to declining crop productivity. The possible synergistic effects of integrating soil & water conservation, and soil fertility management practices ... -
Soil Aggregation, Organic Carbon and Microbial Biomass as Affected By Tillage, Residue Management and Cropping Systems in Tropical Ferralsols of Western Kenya
(Kenya Agricultural and Livestock Research Organization, 2023)Soil aggregates are important indicators of soil health, nutrient status and ability to resist erosion. This parameter is sensitive to soil disturbances that occasion disintegration of aggregate sizes, loss of organic ... -
The Nexus of Study Discipline and Climate Change Awareness Levels among Undergraduates of Kenyatta University, Kenya
(International Journal of Environment and Climate Change, 2023)Aims: Climate change is an intergenerational challenge likely to impede the realization of Sustainable Development Goals. To combat the effects of climate change requires public understanding of the science behind climate ... -
Seasonal Variations of Physico-Chemical and Microbiological Characteristics of Groundwater Quality in Ruiru, Kiambu County, Kenya
(International Journal of Scientific and Research Publications, 2015-12)A study was conducted to assess seasonal variation in physicochemical and microbiological quality of groundwater in Ruiru, Kiambu County in Kenya. A total of 109 well water samples, 51 boreholes and 58 shallow wells ... -
Nutrient and Organic Carbon losses by erosion, and their economic and environmental implications in the drylands of Kenya
(Elsevier B.V., 2022-04)Erosion causes soil nutrients and financial losses, and negatively impacts the environment. We sought to assess the effects of integrated soil fertility and soil & water management practices on nutrient losses, their ... -
Policy Makers’ Perspective on Impacts of Decentralizing Forest Management in Kenya on Forestry Conservation and Community Livelihoods
(Macrothink Institute, 2020)Forests in Kenya were under traditional community management regimes up to 1891 when formal state management of forests started in Vanga Mangrove forest and later the entire country. In 1997 decentralized forest governance ...
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