Browsing Journal Articles by Author "Mugendi, Daniel N."
Now showing items 21-36 of 36
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Nitrogen recovery by alley-cropped maize and trees from 15N-labeled tree biomass in the subhumid highlands of Kenya
Mugendi, Daniel N.; Nair, P.K.; Graetz, D.A.; Mugwee, Jayne; O'Neill, M.K. (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, ... -
Phosphorus availability and exchangeable aluminum response to phosphate rock and organic inputs in the Central Highlands of Kenya
Omenda, Jane A.; Ngetich, F. K.; Kiboi, Milka N.; Mucheru-Muna, M.; Mugendi, Daniel N. (Heliyon, 2021-03)Soil acidity and phosphorus deficiency are some of the constraints hampering agricultural production in tropical regions. The prevalence of soil acidity is associated with phosphorus (P) insufficiency and aluminum ... -
Phosphorus availability and exchangeable aluminum response to phosphate rock and organic inputs in the Central Highlands of Kenya
Omenda, Jane A.; Ngetich, Kipchirchir F.; Kiboi, Milka N.; Muna, Mucheru; Mugendi, Daniel N. (Heliyon, 2021)Soil acidity and phosphorus deficiency are some of the constraints hampering agricultural production in tropical regions. The prevalence of soil acidity is associated with phosphorus (P) insufficiency and aluminum ... -
Potential of deterministic and geostatistical rainfall interpolation under high rainfall variability and dry spells: case of Kenya’s Central Highlands
Kisaka, Oscar M.; Mucheru-Muna, M.; Ngetich, F.K.; Mugwe, Jayne; Mugendi, Daniel N.; Mairura, F.; Shisanya, C.A.; Makokha, G. L. (Springer, 2015-03)Drier parts of Kenya’s Central Highlands endure persistent crop failure and declining agricultural productivity. These have, in part, attributed to high temperatures, prolonged dry spells and erratic rainfall. Understanding ... -
The Potential of Organic and Inorganic Nutrient Sources in Sub-Saharan African Crop Farming Systems
Ngetich, F.K.; Shisanya, C.A.; Mugwe, Jayne; Mucheru-Muna, Monicah; Mugendi, Daniel N. (2012-02)he Potential of Organic and Inorganic Nutrient Sources in Sub-Saharan African Crop Farming System -
Predicting decomposition patterns of tree biomass in tropical highland microregions of Kenya
Mugendi, Daniel N.; Nair, P.K. (Kluwer Academic Publishers, 1997)Decomposition- and nitrogen-release patterns of biomass from three agroforestry multipurpose trees (Calliandra calothyrsus, Cordia africana and Grevillea robusta) were investigated in four contrasting environments ... -
Rainfall Variability, Drought Characterization, and Efficacy of Rainfall Data Reconstruction: Case of Eastern Kenya
Kisaka, Oscar M.; Mucheru-Muna, Monicah; Ngetich, F.K.; Mugwe, Jayne; Mugendi, Daniel N.; Mairura, F. (Hindawi Publishing Corporation, 2014-08)This study examined the extent of seasonal rainfall variability, drought occurrence, and the efficacy of interpolation techniques in eastern Kenya. Analyses of rainfall variability utilized rainfall anomaly index, coefficients ... -
Rainfall Variability, Drought Characterization, and Efficacy of Rainfall Data Reconstruction: Case of Eastern Kenya
Kisaka, Oscar M.; Mucheru-Muna, M.; Ngetich, F.K.; Mugwe, Jayne; Mugendi, Daniel N.; Mairura, F. (Hindawi Publishing Corporation, 2015)This study examined the extent of seasonal rainfall variability, drought occurrence, and the efficacy of interpolation techniques in eastern Kenya. Analyses of rainfall variability utilized rainfall anomaly index, coefficients ... -
The response of soil physicochemical properties to tillage and soil fertility resources in Central Highlands of Kenya
Kiboi, Milka N.; Muriuki, Anne; Ngetich, Felix K.; Adamtey, Noah; Mugendi, Daniel N. (Pagepress, 2020)To attain agricultural sustainability, use of soil resources and tillage requires equal consideration for chemical and physical components of soil fertility. We assessed responses of selected soil physical and chemical ... -
Soil fertility inputs and tillage influence on maize crop performance and soil water content in the Central Highlands of Kenya
Kiboi, Milka N.; Ngetich, F.K.; Fliessbach, A.; Muriuki, A.; Mugendi, Daniel N. (Elsevier, 2019-05)Rigorous land ploughing and cropping fertiliser treatment and mineral fertiliser combined with animal manure treatment) consistently enhanced maize crop growth and development as observed through enhanced chlorophyll ... -
Soil fertility status, management and research in East Africa
Bekunda, M.A.; Ebanyat, P.; Nkonya, E.; Mugendi, Daniel N.; Msaky, J.J. (2004)This study reviews and synthesizes the soil fertility status, management among smallholder farmers and research in the three countries of east Africa, namely Kenya, Tanzania and Uganda. We observe that many studies note ... -
Soil Greenhouse Gas Fluxes From Maize Production Under Different Soil Fertility Management Practices in East Africa
Macharia, Joseph M.; Pelster, David E.; Ngetich, Felix K.; Shisanya, Chris A.; Mucheru-Muna, Monicah; Mugendi, Daniel N. (2020-06)In sub-Saharan Africa (SSA), few studies have quantified greenhouse gas (GHG) emissions following application of soil amendments, for development of accurate national GHG inventories. Therefore, this study quantified soil ... -
Soil Inorganic N and N Uptake by Maize Following Application of Legume Biomass, Tithonia, Manure and Mineral Fertilizer in Central Kenya
Mugwe, Jayne; Mugendi, Daniel N.; Mucheru-Muna, Monicah; Kung’u, James (Springer Netherlands, 2011-05)In the smallholder farms of central Kenya soils suffer from nitrogen (N) deficiency due to inability to replenish it through application of chemical fertilizers and/or manure. This study evaluated the effect of some ... -
Soil nutrients and crop yield response to conservation-effective management practices in the sub-humid highlands agro-ecologies of Kenya
Kiboi, Milka N.; Ngetich, Felix k.; Muna, Mucheru; Diels, J. Diels; Mugendi, Daniel N. (Heliyon, 2021)Crop productivity in most smallholder farming systems in Sub-Saharan Africa experience low use of soil amendment resources, low and erratic rainfall, frequent dry spells, and droughts. Rain-fed agriculture has a high crop ... -
Suitability of different data sources in rainfall pattern characterization in the tropical central highlands of Kenya
Oduor, Nathan O.; Ng'etich, Felix K.; Kiboi, Milka N.; Muriuki, Anne; Adamtey, Noah; Mugendi, Daniel N. (Heliyon, 2020-11)Uncertainty in rainfall pattern has put rain-fed agriculture in jeopardy, even for the regions considered high rainfall potential like the Central Highlands of Kenya (CHK). The rainfall pattern in the CHK is spatially and ... -
Using Apsim-Model as A Decision-Support-Tool for Long-Term Integrated-Nitrogen-Management and Maize productivity under Semi-Arid Conditions in Kenya
Kisaka, Oscar M.; Mucheru-Muna, M.; Ngetich, F.K.; Mugwe, Jayne; Mugendi, Daniel N.; Mairura, F.; Muriuki, J. (Cambridge University Press, 2015-04)There is continued decline in per capita agricultural productivity in the drier parts of Kenya’s central highlands. The declines have been linked to low and declining soil fertility, soil water, high atmospheric heat, ...