Department of Chemistry: Recent submissions
Now showing items 161-180 of 337
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Productivity and nitrogen use of tea plantations in relation to age and genotype
(Elsevier, 2008-07-11)Lack of science-based knowledge on responses of tea bushes to nitrogen (N) in ageing tea plantations hampers the development of ecologically sound and economically profitable N-management strategies. It is hypothesized ... -
Effects of water stress on growth and water relations of young grafted tea.
(Tea Research Foundation of Kenya, 2009)The effects of soil water stress on some physiological parameters and dry matter partitioning (dm) were studied in grafted tea plants (Camellia sinensis L.) grown in containers and subjected to adequate and reduced water ... -
Responses of clonal tea to location of production and plucking intervals
(Elsevier, 2009-07-01)Tea is cultivated in diverse environments causing yield and quality differences in its beverages. To maximise yields and quality, agronomic practices should be optimised. But agronomic recommendations are uniform in different ... -
Anti-plasmodial and larvicidal effects of surface exudates of Gardenia ternifolia aerial parts
(University of Nairobi, 2010)Various parts of Gardenia ternifolia (leaves, roots and stem bark) have been reported by traditional healers as a remedy against malaria fever. The aerial parts are coated with shiny materials rich in flavonoid aglycones. ... -
Changes in soil chemical properties and leaf nutrients content in tea due to nitrogen fertilizer rates and application intervals.
(Tea Research Foundation of Kenya, 2010)Tea (Camellia sinensis (L.) O. Kuntze) plant, requires much more nitrogen than most of the other nutrients for its growth, development and sustainability of harvestable crop. Soil as a resource of plant nutrients, cannot ... -
SURVEY OF SWEET POTATO VIRUSES IN WESTERN KENYA AND DETECTION OF CUCUMBER MOSAIC VIRUS
(2010)Sweet potato is an important food crop worldwide, but several pests and diseases limit its production. In eastern Africa, virus-induced diseases rank second to weevils in causing yield reduction. Symptomatic sweet potato ... -
Development of a multiplex PCR technique for simultaneous detection of Sweet potato feathery mottle virus and Sweet potato chlorotic stunt virus
(An International Journal of the Italian Phytopathological Society, 2010-07-01)Virus diseases, especially those caused by mixed infections, are among the economically most devastating diseases of sweet potato. Sweet potato virus disease (SPVD), which is caused by mixed infection of Sweet potato ... -
Effect of nitrogenous fertilizer application and harvesting intervals on yield of tea clone TRFK 6/8 in Tanzania
(Inter-University Council for East Africa Lake Victoria Research Initiative, 2011)The response of tea clone TRFK 6/8 to nitrogenous fertilizer application and plucking intervals was examined at two sites in Lake Victoria basin in Tanzania between October 2008 and May 2011. The yield varied among locations ... -
Response of tea cultivars to growing environments in Kenya.
(Inter-University Council for East Africa Lake Victoria Research Initiative, 2011)In East Africa, tea growing areas fall in several agro-ecological regions differing widely in elevation, climatic factors and soil conditions. However, environmental and climatic factors which control growth vary with ... -
Yield response of tea clone 6/8 to growing environments, nitrogenous fertiliser application and plucking intervals in East Africa.
(Inter-University Council for East Africa Lake Victoria Research Initiative, 2011)In East Africa, tea growing areas fall in several agro-ecological regions, differing widely in elevation and climatic factors. Despite the differences, agronomic inputs are uniform throughout the region. Clone TRFK 6/8 is ... -
Effects of long term fertilizer use on a high yielding tea clone S15/10: Soil pH, mature leaf nitrogen, mature leaf and soil phosphorus and potassium
(CABI, 2011)Harvesting (plucking) the young tender shoots of Camellia sinensis (L.) O. Kuntze to make tea beverages results in removal of high amounts nutrients from the soil. AHPS15/10 is a high-yielding tea clone with average annual ... -
Natural Resources Management and Land Use. Proceedings of the Cluster Workshop, Nairobi, Kenya, 30th November - 2nd December 2011.
(CABI, 2011)This proceedings contains twenty papers presented at the Cluster Workshop, held in Nairobi, Kenya, from 30 November to 2 December 2011. The papers detail natural resources management and land use in Uganda, Tanzania, Rwanda ... -
Influence of nitrogen fertilizer rates and harvesting intervals on the clonal tea green leaf fatty acids levels in the Lake Victoria Basin of Kenya
(CABI, 2011)Tea agronomic recommendations in Lake Victoria basin are uniform, despite different regions producing teas of different qualities and yields. It is not known if these differences arise from variations in cultivars, agronomic ... -
Impact of Agronomic Inputs in Sugarcane Farming on River Kuywa Surface Water Quality Traversing Sugarcane zones in Western Kenya.
(Maasai mara university, 2011)For sustainable agriculture, the health of people indulged in this activity is paramount. Disease causative agents in these areas should be constantly checked and mitigation measures taken. This research determined levels ... -
Application of Nanotechnology for Enhanced Treatment of Tropical Diseases
(MMU, 2017-01-28)The use of nanotechnology in drug delivery is a rapidly expanding field. Nanotechnology is a multidisciplinary scientific undertaking that involves creation and utilization of materials, devices or systems on nanometer ... -
Effects of Micronutrients on the Nutritional Status of Clonal Tea Replanted in Areas Where Old Tea Was Uprooted
(Journal of Tea Science Research, 2017-03-20)Tea yields peak is 21-30 years after which yields decline. The declining productivity and moribuncy has been reported in many tea fields due to prolonged period of monoculture under tea, physicochemical and biological ... -
Comparison of freeze and spray drying to obtain primaquine-loaded solid lipid nanoparticles
(IGI Global, 2017-07-01)The spray drying and freeze drying of various nanosized Solid Lipid Nanoparticle and the physicochemical attributes of the acquired particles were examined. Primaquine loaded Solid Lipid Nanoparticles dried by the two ... -
Antimicrobial Compounds from Terminalia brownii against Sweet Potato Pathogens
(Bentham Science Publishers, 2011-10)Phytochemical evaluation of Terminalia brownii extracts led to the isolation of five compounds namely - sitosterol, stigmasterol, monogynol A, betulinic acid and arjungenin. Their structures were established by ... -
Encapsulation Of Ibuprofen Into Solid Lipid Nanoparticles For Controlled And Sustained Release Using Emulsification Solvent Evaporation Technique
(Published by Innovare Academic Sciences Pvt Ltd., 2019)Objective: The objective of the study was to encapsulate ibuprofen (IBU) into solid lipid nanoparticles (SLNs) for enhanced dissolution and achieving a sustained and controlled release of the drug from the nanocarrier. Methods: ... -
Changes in soil properties following conversion of forests into intensively managed Camellia sinensis L. plantations along a chronosequence.
(International Society of Tea Science, 2012)Tea in Kenya was introduced in the beginning of the 20th Century, although commercial cultivation commenced in 1924. The total acreage of tea plantations has steadily increased and currently covers approx. 0.15 million ha, ...
