Journal Articles: Recent submissions
Now showing items 2101-2120 of 29892
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Seed Potato Production Practices and Quality of Farm Saved Seed Potato in Kiambu and Nyandarua Counties in Kenya
(University of Nairobi, 2018)Potato production in Kenya is mainly constrained by limited supply of quality seed potato tubers. The objective of this study was to determine seed potato handling practices and quality of farm saved seed potato. A survey ... -
Effect of Seed Treatment on Wheat Seed Viability and Vigour
(University of Nairobi, 2018)Use of farm-saved seed without treating encourage accumulation of seed borne pathogens which lead to outbreak and spread of diseases that result in poor emergence, crop stand, vigour, and reduction in yield. This study ... -
Contribution of Seed Quality to the Occurrence of Fungal and Bacterial Diseases of Farmer Produced Common Bean in Varied Agro-Climatic Zones of Western Kenya
(University of Nairobi, 2018)Abstract: Farmers often recycle farm saved bean seeds from previous harvest for planting in subsequent cropping seasons resulting in reduced quality and buildup of seed borne diseases. This study investigated the quality ... -
Seasonal Dynamics and Alternate Hosts of Thrips Transmitted Iris Yellow Spot Virus in Kenya
(University of Nairobi, 2018)Thrips-transmitted Iris yellow spot virus (IYSV) (Family Tospoviridae, Genus Orthotospovirus) is a major constraint to onion (Allium cepa L.) production in Kenya. Determining seasonal patterns of the vector and alternate ... -
Biopesticides and Their Role in Sustainable Agricultural Production
(University of Nairobi, 2018)Biopesticides are derivatives of plants, microorganisms and insects. Substances from plants and animals have been used to manage diseases in crops, animals and humans. Reliance on nature to heal nature is a practise for ... -
Effect of Farm Saved Maize (Zea mays L.) Seed on Intensity of Foliage Diseases
(University of Nairobi, 2019)Majority of farmers in Africa recycle farm saved seed from the previous seasons. Such seed is usually contaminated with disease causing pathogens, has low vigor and result in low yields. This study was, therefore, conducted ... -
Role of maize residues in transmission of maize chlorotic mottle virus and effect on yield
(University of Nairobi, 2019)Maize chlorotic mottle virus (MCMV) is the only established member of the genus Machlomovirus and it is imperative in the development of maize lethal necrosis (MLN) disease. Infection of maize plants with MCMV can cause ... -
Effect of Legume Extracts on Germination, Seedling Health of Beans (Phaseolus vulgaris L.) and Soil Microorganisms
(University of Nairobi, 2019)Application of undecomposed green manure has been reported to cause poor emergence and establishment of common beans in the field. Therefore, to understand the mechanisms’ contributing to the poor crop establishment, the ... -
Influence of socio‐economic and agronomic factors on aflatoxin and fumonisin contamination of maize in western Kenya
(University of Nairobi, 2019)Consumption of maize contaminated with mycotoxins has been associated with detrimental health effects. A farm survey covering 116 push‐pull and 139 non‐push‐pull cropping systems was conducted to determine the socio‐economic ... -
Assessing Sensory Characteristics and Consumer Preference of Legume-Cereal-Root Based Porridges in Nandi County
(University of Nairobi, 2019)Previously, porridge has been cereal based, consumed as a beverage or weaning food. Malnutrition among children has necessitated inclusion of legumes and roots in an effort to boost nutrient density. Therefore, the current ... -
Perpendicular magnetic anisotropy in Mn2VIn (001) films: An ab initio study
(University of Nairobi, 2017)First principles study of the magnetic anisotropy of Mn2VIn (001) films show perpendicular magnetic anisotropy (PMA), which increases as a function of the thickness of the film. Density functional theory (DFT) as implemented ... -
Leveraging HIV advancement in the light of Tuberculosis and Malaria usingSystem Dynamics
(University of Nairobi, 2016)Chronic illnesses to which HIV/AIDS, Malaria and TB is part, have had long term direct impact on the population, socialeconomic status as well as health in general. A lot of commitment ... -
Splitting and Admissible Topologies Defined on the Set of Continuous Functions Between Bitopological Spaces
(University of Nairobi, 2018)In this paper, p-splitting, p-admissible, s-splitting and s-admissible topologies on the sets p−C(Y, Z) and s−C(Y, Z) are defined and their properties explored. exponential functions are introduced in function spaces and ... -
On Local Linear Regression Estimation of Finite Population Totals in Model Based Surveys
(University of Nairobi, 2018)In this paper, nonparametric regression is employed which provides an estimation of unknown finite population totals. A robust estimator of finite population totals in model based inference is constructed using the procedure ... -
Crystal Structures and Cytotoxicity ofent-Kaurane-TypeDiterpenoids from TwoAspiliaSpecies
(University of Nairobi, 2018)A phytochemical investigation of the roots ofAspilia plurisetaled to the isolationofent-kaurane-type diterpenoids and additional phytochemicals (1–23).The structures ofthe isolated compounds were ... -
Hepatoprotective effects of Erythrina abyssinica Lam Ex Dc against Non Alcoholic Fatty Liver Disease in Sprague Dawley Rats
(University of Nairobi, 2019)Background: Non-alcoholic fatty liver disease (NFLD) is the hepatic manifestation of the metabolic syndrome recognized as the most prevalent chronic liver disease across all age groups. NFLD is strongly associated ... -
Structural, Optical and Photoelectrochemical Properties of Cuprous Oxide Synthesized by Low Temperature Thermal Oxidation
(University of Nairobi, 2016)Ultrathin films (50-150nm thick) cuprous oxide (Cu2O) thin films were deposited by low temperature thermal oxidation technique. The structural, optical and photoelectrochemical properties of the thin films were investigated. ... -
Raman Crystallinity and Hall Effect Studies of Microcrystalline Silicon Seed Layers
(University of Nairobi, 2017)Aluminium induced crystallization (AIC) was used to crystallize sputtered amorphous silicon thin films on aluminium-coated glass substrates at annealing temperatures ranging from 250-520°C in vacuum. Crystalline volume ... -
Emphasis on Photovoltaic (PV) Solar System Installation Training: A Case Study of a PV Solar System Installed in Makueni County, Kenya
(University of Nairobi, 2017)The installation of Photovoltaic (PV) solar systems in institutions as well as homesteads in the rural areas in Kenya is increasing at a high rate; and so is the need for the stake holders to make sure the ... -
Electrophoretic Deposition of Titanium Dioxide Thin Films for Photocatalytic Water Purification Systems
(University of Nairobi, 2017)In this study, electrophoretic deposition (EPD) technique was used to deposit titanium dioxide (TiO2) thin films on conducting glass substrates for application in water purification from organic contaminants. Phenol was ...