Browsing School of Biological and Physical Science by Title
Now showing items 744-763 of 925
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Resistance of Coffea arabica cv. Ruiru 11 tested with different isolates of Colletotrichum kahawae, the causal agent of coffee berry disease
(Springer Netherlands, 2001-08-01)Seven single conidia isolates of Colletotrichum kahawae varying in pathogenicity were used to inoculate hybrid progenies from 66 crosses ofCoffea arabica cv. Ruiru 11. The objective of this study was to investigate the ... -
Response of Clonal Tea to Different Tea Growing Locations, Nitrogenous Fertiliser Rates and Plucking Intervals in the Kenya Highlands
(Maseno University, 2010)Tea Camellia sinensis, is widely grown in the highlands of Kenya for manufacture of mainly black tea. The most costly inputs in tea cultivation are nitrogenous fertiliser and plucking which are key determinants of yield ... -
The response of clone BBK 35 tea to nitrogen fertilizer rates and harvesting intervals in the lake Victoria basin of Kenya.
(CAB International, 2013-01-01)Tea is an economic crop in the Lake Victoria basin of East Africa, earning high foreign exchange and creating employment opportunities especially in the rural poor regions. It is grown under varying environments causing ... -
Response of Plain Black Tea Parameters, Individual Theaflavins and Yields Due to Location of Production and Clones within Lake Victoria Basin
(International Society of Tea Science, 2019)Tea (Camellia sinensis) is a major cash crop and leading foreign exchange earner, contributing to poverty alleviation by providing employment and livelihood to many stakeholders in the producing countries. Production has ... -
Response of some black tea quality parameters to nitrogen fertiliser rates and plucking frequencies
(John Wiley & Sons, Ltd, 1994-12-01)The effects of the rate of application of nitrogenous fertiliser and frequency of plucking (harvesting) on various black tea quality parameters and yields were compared on done 6/8. High rates of nitrogen application and ... -
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 ... -
Response surface methodology to understand the anaerobic biodegradation of organochlorine pesticides (OCPs) in contaminated soil—significance of nitrate conce...
(2014-09-01)Abstract Purpose Problems associated with Organochlorine pesticide (OCP)-contaminated soils have received wide attention. To understand the anaerobic biodegradation process constraints, innovative mathematical analysis ... -
Responses in dry matter production of NERICA to soil moisture stress
(CROP SCIENCE SOCIETY OF JAPAN, 2007)NERICA (new rice for Africa) developed by Africa Rice Centre (ARC) in West Africa has a reputation for high production under rainfed cultures. These genotypes have been widely adopted by farmers in West African countries ... -
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 ... -
Responses of ecosystem carbon dioxide fluxes to soil moisture fluctuations in a moist Kenyan savanna
(Cambridge University Press, 2010-11-01)act: Measurements were conducted within a fence-exclosure between February 2008 and July 2009 to investigate the influence of soil moisture on ecosystem CO2 fluxes in a Themeda irifl/idra-dominated grassland of a humid ... -
Responses of mango (Mangifera indica L.) root stock seedlings to water stress
(Asian Network for Scientific Information, 2007)The present studies were aimed at investigating the effect of different watering regimes on the gas exchange parameters (stomatal conductance, CO<sub>2</sub> assimilation and transpiration rates) and chlorophyll content ... -
Responses of slenderleaf rattlebox (Crotalaria ochroleuca) to water deficit
(2017)Water deficit affects plant growth and development thus affecting crop productivity. It is the major a biotic stress experienced in the vast semi arid and arid regions of Kenya and the world as a whole. Water deficit ... -
Review of current state of knowledge of microcystin and its impacts on fish in Lake Victoria
(Lakes and reserviors,science,policy and management for sustainable use, 2020-07-03)Microcystins are part of algal toxins produced intracellularly within algal cells, being in the family of hepatotoxic cyclic peptides from various species of blue‐green algae. Blue‐green algae are widely abundant in many ... -
Review of current state of knowledge of microcystin and its impacts on fish in Lake Victoria
(Wiley, 2020)Microcystins are part of algal toxins produced intracellularly within algal cells, being in the family of hepatotoxic cyclic peptides from various species of blue-green algae. Blue-green algae are widely abundant in many ... -
A review of tobacco abuse and its epidemiological consequences
(Springer, 2021)Aim The economic burden caused by death and disease in the world is credited mainly to tobacco use—currently linked to approximately 8,000,000 deaths per year with approximately 80% of these faralities reported in low and ... -
Revisiting non-degenerate parametric down-conversion
(Springer-Verlag, 2008)he quantum dynamics of a two-mode non-resonant parametric down-conversion process is studied by recasting the time evolution equations for the basic operators in an equivalent spin equation form with simpler exact solutions ... -
Rheological Properties of Blends of Isotactic Polystyrene–Isotactic Poly(para-methylstyrene) Films Derived from a Comparative Dewetting Study
(American Chemical Society, 2020)We examined changes in rheological properties of nonequilibrated spin-coated thin films of isotactic polystyrene (iPS) and isotactic poly(para-methylstyrene) and blends thereof by dewetting experiments. For 200 nm thick ... -
Risk associations of submicroscopic malaria infection in lakeshore, plateau and highland areas of Kisumu County in western Kenya
(Public Library of Science, 2022-05)Persons with submicroscopic malaria infection are a major reservoir of gametocytes that sustain malaria transmission in sub-Saharan Africa. Despite recent decreases in the national malaria burden in Kenya due to vector ...