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Nitrogen recovery by alley-cropped maize and trees from 15N-labeled tree biomass in the subhumid highlands of Kenya
(Springer-Verlag, 2000-05)
The effectiveness of tree-leaf biomass as a source of N to crops in agroforestry systems depends on the rate at which crops can obtain N from the biomass. A study was conducted to determine the fate of 15N labeled, ...
Long-term land management effects on soil properties and microbial populations in a maize-bean rotation at Kabete, Kenya
(African Journal of Agricultural Research, 2010-01)
The effect of continued application of mineral and organic fertilizers on soil agro-properties and soil microbial populations and activity, was studied in a long-term field experiment at Kabete, in the highlands of Kenya. ...
Organic and Mineral Input Management to Enhance Crop Productivity in Central Kenya
(American Society of Agronomy, 2009-09)
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 the ...
Effects of Organic and Mineral Fertilizer Inputs on Maize Yield and Soil Chemical Properties in a Maize Cropping System in Meru South District, Kenya
(Kluwer Academic Publishers, 2007)
Soil nutrient depletion as a result of continuous cultivation of soils without adequate addition of external inputs is a major challenge in the highlands of Kenya. An experiment was set up in Meru South District, Kenya in ...
Partial balance of nitrogen in a maize cropping system in humic nitisol of Central Kenya
(Kluwer Academic Publishers, 2006-11)
The application of nitrogen in a soil under agricultural production is subject to several pathways including de-nitrification, leaching and recovery by an annual crop. This is as well greatly influenced by the management ...
Analysis of Household Energy Sources and Woodfuel Utilisation Technologies in Kiambu, Thika and Maragwa Districts of Central Kenya
(Academic Journals, 2012-02-01)
This study was carried out in Kiambu, Thika and Maragwa districts of Central Kenya. Its objective was to analyze household energy sources and utilization technologies used. Primary data was collected from households using ...
Scientific Evaluation of Smallholder Land use Knowledge in Central Kenya
(Wiley InterScience, 2008)
The following study was conducted to determine smallholders’ land use management practices and agricultural indicators of soil
quality within farmers’ fields in Chuka and Gachoka divisions in Kenya’s Central Highlands. ...
Effects of selected soil and water conservation technologies on nutrient losses and maize yields in the central highlands of Kenya
(Elsevier Masson, 2014-05)
Mitigating nutrient loss is a prerequisite of sustainable agriculture in the tropics. We evaluated three soil and water conservation technologies (mulching, minimum tillage and tied ridging) for two cropping seasons (long ...
Reversibility of Soil Productivity Decline with Organic Matter of Differing Quality Along a Degradation Gradient
(Springer-Verlag, 2008-08)
In the highlands of Western Kenya, we investigated the reversibility of soil productivity decline with increasing length of continuous maize cultivation over 100 years (corresponding to decreasing soil organic carbon (SOC) ...