Browsing PHD-Department of Plant and Microbial Sciences by Title
Now showing items 1-20 of 30
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Application of Taxonomic and Dna Barcoding Techniques in Identifying Commonly Traded Herbal Plant Species in Selected Counties, Kenya
(Kenyatta University, 2022)Over eighty percent of the world’s population depends on herbal products for their basic health care needs. However, this widespread popularity is counterbalanced with the lack of relevant research to authenticate the ... -
Bioecology and population dynamics of red spider mites( a cari: tetranychidae) on tomato in small scale production systems in Kenya
(2012-01-03)Tomato, Lycopersicon esculentum Mill. (Solanaceae) is one of the most important vegetables grown in Eastern and South Africa for local consumption and income generation by small scale farmers. Yet, yields of the crop are ... -
Carbon budget and sustainable harvesting of cyperus papyrus L. (Papyrus) in a papyrus swamp in lake Naivasha, Kenya
(2012-02-14)Carbon budget and sustainable harvesting of Cyperus papyrus (papyrus) in a papyrus swamp in Lake Naivasha were investigated. Carbon dioxide fluxes and photosynthesis were measured using eddy covariance and IRGA techniques ... -
Characterisation of Colletotrichum Gloeosporioides and Effectiveness of Management Strategies of Anthracnose Disease of Avocado in Murang’a County, Kenya
(Kenyatta University, 2018)Avocado (Persea americana Mill) is a fruit commercially grown worldwide. Its production is affected by anthracnose disease which causes huge loss of avocado fruits both at farm level and in storage. Management of anthracnose ... -
Cross-stage physiological effects of the desert locust, schistocerca gregaria, aggregation pheromones on their behaviour and susceptibility to control agents
(2012-03-07)The desert locust, Schistocerca gregaria (Forskal, 1775) (Orthoptera: Acrididae) is a voracious and polyphagous pest of worldwide importance. Locust control relies on repetitive application of insecticides, rendering this ... -
Cultural management of banana weevil cosmopolites sordidus germar (coleoptera: curculionidae) for improved banana field in Western Kenya
(2012-04-04)Studies on the effects of planting materials, weevil trapping, and intercropping on the banana weevil cosmopolites sordidus Germar. and crop yields were conducted in western Kenya from 1994 to 1997. The objectives of the ... -
Distribution, Behavioural Biology, Rearing and Pollination Efficiency of Five Stingless Bee Species (Apidae: Meliponinae) in Kakamega Forest, Kenya.
(2013-08-01)The study on distribution, behavioral biology, rearing and pollination efficiency of five stingless bee species (Apidae: Meliponinae) in Kakamega forest, Kenya showed that; species diversity was higher at Ivihiga compared ... -
Diversity and Molecular Phylogenetic Analyses of Parmelioid Lichens (Parmeliaceae, Ascomycota) In Kenya
(Kenyatta University, 2017-11)Lichens are symbiotic associations of fungi and algae or cyanobacteria.They are ecologically important as bioindicators for air pollution, forest age and health, and as sources of food, shelter and nesting materials for ... -
Efficacy of Selected Medicinal Plants Used by the Ogiek Communities against Microbial related Infections
(2014-02-24)Ethnobotany and traditional medicines have been used for bioprospection for modern pharmaceutical in all the world continents. In Kenya the ethnobotanical of several communities has revealed that plants are important source ... -
An ethnopharmacological investigation of plants used by Abagusii traditional medical practitioners
(2012-03-07)An ethno-medical survey of plants used by Abagusii Traditional Medical Practitioners was carried out and 166 plant species representing 138 genera and 62 families were botanically identified. Antimicrobial and phytochemical ... -
Fungal parasitism of root-knot nematode eggs and effects of organic matter, selected agrochemicals and intercropping on the biological control of meloidogyne javanica on tomato
(2012-06-05)Root-knot nematodes are serious pests all over the world. Over 50% Pyrethrum losses have been associated with these pests in Kenya. Chemical management of these organisms is effective but difficult to sustain for long-term ... -
Genetic transformation of select African sweet potato (ipomoea halalas l. Lain.)Cultivars with Weevil resistance genes and evaluation of phytoalexin levels from infected roots
(Kenyatta University, 2015)Abstract Sweetpotato is an important root and tuber crop in Sub-Saharan Africa (SSA) used as food and feed but weevil infestation remains a major concern. Weevils account for production losses between 28 and 100% but no ... -
Geographic variation in the development of cotesia sesamiae (hymenoptera: braconidae) on Busseola fusca (lepidoptera : noctuidae) in Kenya: polydnaviruses and co-evolutionary dynamics
(2011-12-07)Microgastrine endoparasitoids co-inject symbiotic viruses known as polyDNAviruses (PDV) together with other wasp factors such as the venom and calyx fluid proteins during oviposition in hosts. These factors disrupt the ... -
Indigenous knowledge and effects of integrated soil fertility management on growth, grain yield and rhizobia genetics of selected cowpea varieties
(2011-08-15)The main objectives of this study were; (1) To find out whether farmers in Makueni District were aware of soil fertility status in their farms and annual food availability, (2) To find out the proportions of cultivated ... -
The influence of drip irrigation on ecophysiology and yield of arabica coffee hybrid Ruiru 11
(2012-04-11)The influence of drip irrigation on Coffee arabica L. cultivar Ruiru 11 was studied in a field experiment. Drip irrigation was applied when a soil moisture deficit (SMD) of 100 mm was recorded. FOur drip irrigation rates ... -
Interaction between arbuscular mycorrhiza fungi (AMF) and meloidogyne hapla on pyrethrun in Kenya
(2012-04-05)In this study, mycorrhizal status of pyrethrum in Kenya was determined. Fungal isolates obtained from pyrethrum fields were screened for efficacy against M. hapla and in improving pyrethrum growth. Effect of inorganic ... -
Interactions among leafhopper vector populations, maize streak virus disease, altitude and soil fertility
(2011-08-03)Leafhoppers of the genus Cicadulina exclusively transmit Maize streak virus (MSV) disease which is an important constraint to maize production in Sub-Saharan Africa. Current literature indicates that agro-ecological factors ... -
Introgressing Genes for Maize Lethal Necrosis Disease Tolerance to Maize Inbred Lines and Awareness Evaluation in Selected Counties in Kenya
(Kenyatta University, 2023)Maize lethal necrotic disease remain a major biotic challenge facing maize production in Kenya and the entire Sub-Saharan region. The disease is caused by the synergistic co-infections of any member of potyviridae family ... -
Metagenomic Analysis of Bacterial Communities in Drinking Water Distribution Systems in Mombasa County (Kenya)
(Kenyatta University, 2016)Hygienic problems in drinking water distribution systems may originate from contamination by external microorganisms or growth of indigenous biomass. Among all water related disease outbreaks, 33% waterborne diseases ... -
Neem seed for the management of the banana weevil, cosmopolotes sordidus germar (coleoptera: curculionidae)and banana parasitic nematode complex
(2012-04-04)The study was conducted in Western Kenya, a prime banana growing area during the period of May 1996 to February 1999. The objectives were to control the banana weevil and parasitic nematodes with neem materials, thereby ...
