Department of Chemistry: Recent submissions
Now showing items 141-160 of 337
-
Simultaneous quantification of acetaminophen and tryptophan using a composite graphene foam/Zr-MOF film modified electrode
(Royal Society of Chemistry, 2020)A graphene foam/zirconium-based metal–organic framework composite (GF/UiO-66) was synthesised and then employed to modify glassy carbon electrodes (GCE). These modified electrodes were successfully used for the simultaneous ... -
Water Quality of Selected Fishing Beaches of Lake Victoria Kenyan Gulf
(Scientific Research Publishing, 2020-01-06)Lake Victoria the second largest fresh water body in the world located in East Africa is a shared resource between Kenya, Tanzania and Uganda and enjoys a wide range of streams and rivers from as far as Burundi and Rwanda. ... -
Trace Elements in Crustaceans, Mollusks and Fish in the Kenyan Part of Lake Victoria: Bioaccumulation, Bioindication and Health Risk Analysis
(Springer US, 2020-02-04)This is the first comprehensive report on the accumulation of Cr, Ni, As, and Ag in the fish species Nile tilapia Oreochromis niloticus and Nile perch Lates niloticus from Lake Victoria, complemented with recent data on ... -
The effects of blending clonal leaf on black tea quality
(Elsevier, 1999-08-01)Although most clones are selected for quality and yields, there are clones in production with superior yields but producing inferior black tea quality and vice versa. Some of these clones with superior yield give very poor ... -
Factors impeding tea production in smallholder sub-sector of the Kenya tea industry: an assessment extension staff awareness of existing technologies.
(Tea Research Foundation of Kenya, 2000)This study assessed the level of extension staff in the various technological packages when compared to the agronomic research recommendations. The survey covered 76 extension staff in Kirinyaga, Nyambene, Nandi and Nyamira ... -
Chlorophyll meter use on field grown tea: 1. The optimum leaf age and measuring positions on a leaf blade.
(Tea Research Foundation of Kenya, 2000)In a field experiment conducted in Kenya, a Hydro N-tester chlorophyll meter was used to determine the optimum age and reading position for the measurement of chlorophyll in leaves of tea (clone 6/8). Meter readings were ... -
Split application of nitrogen fertilizer rates in two tea cultivars grown in the Eastern and Western highlands of Kenya: I. Confirmatory results on yield effects.
(Tea Research Foundation of Kenya, 2000)Two experiments were conducted in Kericho and Kangaita, Kenya during 19991-98 to investigate the effects of nitrogen fertilizer rates (50, 100, 200, 400 and 800 kg/ha) and frequencies of application (1, 2 and 4 split ... -
Quality response of clonal black tea to nitrogen fertiliser, plucking interval and plucking standard
(John Wiley & Sons, Ltd., 2000)Variations in the black tea quality of high‐yielding clone S15/10 in response to rates of NPKS 25:5:5:5 fertiliser of 200 and 400 kg N ha−1 year−1, plucking intervals of 7, 14 and 21 days and a selective plucking standard ... -
A Measure of Economic Rationality in the Smallholder Tea Sub-Sector in Kenya
(Department of Agricultural Economics; University of Nairobi., 2001)The smallholder tea sub-sector in Kenya is considered the largest and one of the most successful smallholder schemes in the world. However, tea productivity in this sub-sector has been persistently low when compared with ... -
Effects of fertilisers on tea yields and quality: A review with special reference to Africa and Sri Lanka.
(Tea Research Foundation of Kenya, 2001)Introduction the increase in world demand, consequently tea Camellia sinensis L. 0 . Kuntze plants are commercially grown under different climatic conditions with latitudes ranging from 49' N (Outer Carpathians) to 33' S ... -
A test for relative efficiency in the Smallholder Tea Sub-sector in Kenya
(Department of Agricultural Economics; University of Nairobi., 2001)Despite availability of tea growing technologies to all Kenya tea farmers, green leaf production in smallholder sub-sector remains low. Tea in Kenya is grown in the East of the Rift Valley and the West of the Rift Valley ... -
Gender Analysis of Economic Efficiency in Smallholder Tea Production in Kenya
(Eastern Africa Agricultural Economics Society,1979, 2003)If the productivity of tea among the smallholders can only increase to about 2500 kg/ha/yr, the national projection of 300 thousand metric tones would be realized without the need to allocate more land to tea enterprise. ... -
Tea
(Oxford, 2003)This article focuses on the process of tea fermentation. Tea beverages are processed from the young tender shoots of Camellia sinensis L. O. Kuntze. Because of its subtle flavors and health benefits, tea has become the ... -
Long term effects of nitrogenous fertilizers on tea yields, nutrients uptake and some soil chemical properties
(Soil Science Society of East Africa, 2005)A field experiment was set up to determine long tenn responses of different rates of nitrogen fertilizers namely used in tea, N~KS 25:5:5:5 and NPK 20: 10: 10, on tea 'Ields, nutrient uptake and soil chemical properties. ... -
Assessment of Constraints in Technology Transfer System and Policies which Limit the Realisation of High Green Leaf Production in the Smallholder Tea Sector of the Kenya Tea …
(African Technology Policy Studies Network (ATPS), 2005-01-01)Technological recommendations for maximizing green leaf production have been made available to smallholder farmers by the Tea Research Foundation of Kenya (TRFK) through various publications. Indeed TRFK has released ... -
Sustainability of smallholder tea growing in Kenya
(2007)Although tea was introduced in Kenya in 1903, Africans (natives) were barred from growing the crop until after independence in 1963 when the legislation was repealed. Africans started growing tea under the smallholder tea ... -
NPK (S) fertilizer use in commercially cultivated clone BBK 35 in different tea growing regions of Kenya: I. Experimental design and initial soil chemical properties.
(Tea Research Foundation of Kenya, 2008)An experiment was set up in five sites by superimposing on commercially grown plantations consisting of one popular tea cultivar, clone BBK 35 at Timbilil estate, Kericho; Changoi Estate, lower Kericho; Magura-Kipkebe ... -
NPK (S) fertilizer use in commercially cultivated clone BBK 35 in different tea growing regions of Kenya: II. Effects of nitrogen rates and plucking intervals on soil chemical …
(Tea Research Foundation of Kenya, 2008)One commercially and widely grown tea cultivar, clone BBK 35 was evaluated for changes in soil chemical properties at different N-fertilizer rates and plucking rounds in five different localities in Kenya. The soils in all ... -
The role of Kenya Tea Development Agency Limited in the small-scale tea holder development in Kenya.
(International Society of Tea Science, 2008)The Kenya Tea Development Authority (KTDA) was formed in 1964 to take over the functions of the Special Crops Development Authority (SCDA), which had been set in 1960 to promote tea growing by indigenous Kenyans (Africans). ... -
Long term fertilizer use on high yielding clone S15/10: Tea yields
(International society of tea science, 2008)High production of young tender shoots of Camellia sinensis L. O. Kuntze to make tea beverages leads to soil nutrients depletion through harvested crop and leaching. The production can be sustained by replenishing the lost ...
