A5047742531- Soil Carbon and Nitrogen Dynamics
- Crop Yield and Soil Fertility
- Agronomic Practices and Intercropping Systems
- Agricultural Innovations and Practices
- Agriculture and Rural Development Research
- Rangeland Management and Livestock Ecology
- Agroforestry and silvopastoral systems
- Climate change impacts on agriculture
- African Botany and Ecology Studies
- Soil erosion and sediment transport
- Bioenergy crop production and management
- Legume Nitrogen Fixing Symbiosis
- Agricultural Science and Fertilization
- Indigenous Knowledge Systems and Agriculture
- Soil and Water Nutrient Dynamics
- Soil and Land Suitability Analysis
- Hydrology and Drought Analysis
- Forest ecology and management
- Precipitation Measurement and Analysis
- Conservation, Biodiversity, and Resource Management
- Land Rights and Reforms
- Soil Management and Crop Yield
- Climate variability and models
- Mycorrhizal Fungi and Plant Interactions
- Irrigation Practices and Water Management
University of Embu
2014-2024
Kenya Agricultural and Livestock Research Organization
2021
Kenyatta University
2003-2021
Kenya Agricultural Research Institute
2014
University of Bonn
2006
University of Florida
1994-2000
Kenya Forestry Research Institute
1994-1996
World Agroforestry Centre
1996
SUMMARY Declining soil fertility is a major cause of low per capita food production on smallholder farms sub-Saharan Africa. This study attempted to provide an empirical explanation the factors associated with farmers' decisions adopt or not newly introduced integrated management (ISFM) technologies consisting combinations organics and mineral fertilizer in Meru South district central highlands Kenya. Out 106 households interviewed, 46% were ‘adopters’ while 54% ‘non-adopters’. A logistic...
SUMMARY Declining land productivity is a major problem facing smallholder farmers today in Sub-Saharan Africa, and as result increase maize grain yield has historically staggered behind gains that have been achieved elsewhere the world. This decline primarily results from reduction soil fertility caused by continuous cultivation without adequate addition of external nutrient inputs. Improved management practices, which combine organic mineral fertilizer inputs, can enable efficient use...
This study examined the extent of seasonal rainfall variability, drought occurrence, and efficacy interpolation techniques in eastern Kenya. Analyses variability utilized anomaly index, coefficients variance, probability analyses. Spline, Kriging, inverse distance weighting were assessed using daily data digital elevation model ArcGIS. Validation these methods was evaluated by comparing modelled/generated values observed root mean square errors absolute statistics. Results showed 90% chance...
Climate variability in recent decades has intensified the SSA region, which makes it imperative to explore adequate adaptation and mitigation strategies offset its current future adverse impacts. Farmers' perception of climate can significantly influence their coping, mitigation, potential. This study assessed farmers' perceptions indicators consequences explored factors influencing adoption coping strategies. A cross-sectional survey design was used sample 300 farmers Central Highlands...
Organic resources (ORs) are important nutrient inputs in tropical agriculture. Combined with mineral fertilizers, they form the backbone of integrated soil fertility management. This study was conducted to determine medium‐ long‐term influence OR quality and quantity on maize productivity evaluate occurrence additive benefits terms extra grain yield produced by combined application ORs N fertilizers. Farmyard manure, high Mexican sunflower [ Tithonia diversifolia (Hemsl.) A. Gray],...
Most sub-Saharan Africa smallholder farming systems are highly heterogeneous. Direct quantification of greenhouse gas emissions from these is hampered by diversity at farm-level. Each farm contributes differently to (GHG) and consequently GHG inventories. Typologies can be used as a mechanism addressing systems' heterogeneity grouping them into specific types. With the simplification initiatives in mind, we developed typologies based on soil fertility inputs. We assessed nitrogen application...
Abstract. In sub-Saharan Africa, maize is one of the most important staple crops, but long-term cropping with low external inputs has been associated loss soil fertility. While adding high-quality organic resources combined mineral fertilizer proposed to counteract this fertility loss, effectiveness and interactions site properties still require more understanding. This study used repeated measurements over time assess effect different quantities qualities resource addition nitrogen (N) on...
Integrated soil fertility and water conservation technologies are possible solutions to the low per capita food production in Sub-Saharan Africa (SSA). Nonetheless, rate of adoption these by smallholder farmers has stagnated over years despite being recommended. This been attributed existence wide communication gaps among researchers, extension agents, farmers. Therefore, this study aimed assess influence factors on selected drylands Tharaka-Nithi County. We used a cross-sectional survey...
Oil and gas production are critical to economic growth. In Bentiu, Unity State, South Sudan, the of oil resources could enhance transformation, including job creation, infrastructure development improved access services such as healthcare education. However, alongside these benefits, industry has introduced challenges, displacement traditional livelihoods, increased socio-economic inequalities, community tensions over resource allocation environmental degradation. The findings this study...