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Now showing items 2828-2847 of 3340
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Soil Erosion Threatens Food Production
(2013)Since humans worldwide obtain more than 99.7% of their food (calories) from the land and less than 0.3% from the oceans and aquatic ecosystems, preserving cropland and maintaining soil fertility should be of the highest ... -
Soil fertility inputs and tillage influence on maize crop performance and soil water content in the Central Highlands of Kenya
(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 and wheat nutrient content in Vertisol cropping systems of central highlands of Ethiopia
(BioMed Central, 2015)Background: Land degradation reduces agricultural productivity and poses a serious threat on food security status of households. In Ethiopia, farmers have been using only urea and di-ammonium phosphate for more than 15 ... -
Soil fertility status, management and research in East Africa
(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 fertility under Calliandra calothyrsus hedgerows and other land-use treatments following forest clearance in Jamaica
(Kluwer Academic Publishers, 2003-02)An experiment in the Blue Mountains of Jamaica investigated the consequences of three land-use treatments applied following forest clearance on soil fertility and resulting crop growth over a five year period. The treatments ... -
Soil Greenhouse Gas Fluxes From Maize Production Under Different Soil Fertility Management Practices in East Africa
(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
(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 moisture variabillity across soil texture regimes in disturbed and nondisturbed areas of University of Embu in Embu county.
(University of Embu, 2019)Soils are complex porous media comprising of minerals, water, air and organic matter. Soil serves as a media for growth of various types of plant and reservoir of the hydrological cycle. Soil moisture is the amount of ... -
Soil nutrients and crop yield response to conservation-effective management practices in the sub-humid highlands agro-ecologies of Kenya
(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 ... -
Soil Organic Carbon and Nitrogen Fractions and Sugar Beet Sucrose Yield in Furrow-Irrigated Agroecosystems
(2015-03)Soil organic matter (SOM) fractions were determined using extraction-, incubation-, and density-based fractionation techniques on samples collected from a range of furrow-irrigated sugar beet (Beta vulgaris L.) ... -
Soil Organic Matter Content and Soil Physical-Chemical Properties at the University of Embu
(University of Embu, 2019)rganic matter plays important and multi-faceted role in soil physical and chemical properties. Physically soil organic matter influences soil texture, soil moisture content, water holding capacity and bulky density. ... -
solation and characterization of naphthalene utilising bacteria from Nairobi River
(2006)Bacteria that utilise naphthalene were isolated on minimal medium from 3 sites along the Nairobi River. Sixteen isolates were obtained, characterised and identified as Listeria sp., Aerococcus viridans, Streptococcus ... -
Solvent Effects on the UV Absorption Spectrum of Carmofur
(Scientific Research Publishing, 2016-01)In this article, we reported that carmofur could be induced by some solvent to produce conformational alteration. Ultraviolet (UV) spectra were used to study the conformation alteration of carmofur. Upon the addition of ... -
Solving the independent set problem by sticker based DNA computers
(Scientific Research Publishing, 2012-04)In this paper, the sticker based DNA computing was used for solving the independent set problem. At first, solution space was constructed by using appropriate DNA memory complexes. We defined a new operation called “divide” ... -
Somaclonal variations of Soybeans (Glycine Max. L. Merr) stimulated by drought stress based on random amplified polymorphic DNAs (RAPDs)
(Scientific Research Publishing, 2012-01)In soybeans, drought stress causes 50% yield losses. Breeding for drought tolerance in soybeans has been widely developed using various methods, among which is polyethylene glycol (PEG-6000) induction to simulate drought ... -
Some New Results on Prime Graphs
(Scientific Research, 2012-07)We investigate prime labeling for some graphs resulted by identifying any two vertices of some graphs. We also introduce the concept of strongly prime graph and prove that the graphs Cn, Pn, and K1,n are strongly prime ... -
Sorghum production for food security: A socioeconomic analysis of sorghum production in Nakuru County, Kenya
(Academic Journals, 2013-12-05)Kenya’s Vision 2030 identifies agriculture as one of the key sectors to deliver sustainable economic growth and improved livelihoods for the poor in the rural areas. However, the sector continues to face several endemic ... -
“Soul Stealer: 1768 Chinese Sorcery Scare” in Social Crisis
(Scientific Research, 2015-01)The “Soul Stealer: Chinese Sorcery Scare 1768” written by Alden Kuhn is a successful example to research more profound problem areas by use of legal history. In the aura of prosperity and good governance by the determination ... -
Sovereign Marketing: A New Strategy of Marketing
(Scientific Research, 2017-08)The importance of “sovereign” consumerism is well established in business and marketing theory. It is a familiar business saying that the consumer is the king of the market or market king, which is truer in theory rather ... -
Spatial Analysis and Mapping of Infant Mortality in Kenya On The Basis Of Demographic and Health Survey Data
(University of Nairobi, 2010)This study set out to examine and map the spatial variation of infant mortality in Kenya. We used data from Demographic and Health Survey (DHS) database to explore spatial variation. Generalized linear mixed inodel(GLMM) ...