Research Papers/Topics in Water Resources Management And Agro-Meteorology

Nutrient Management Options For Enhancing Maize Production Under Conservation Agriculture In Embu County, Kenya

ABSTRACT Smallholder farmers in Runyenjes are experiencing decline in agricultural productivity. The yield decline has been caused by degraded soils as a result soil erosion and inappropriate soil management, nutrients mining due to continuous cropping as well as leaching of minerals. To address these crop production challenges, there is need for balanced nutrient management options with appropriate tillage system. This study was therefore carried out under on-farm trials to: i) assess ...

Legume Fallows For Fuelwood Production And Soil Fertility Improvement In Sauri Millennium Village, Siaya District, Kenya

ABSTRACT This research work was conducted between March 2008 (before start of long rains) and August 2008 (the season for harvesting maize), in Sauri Millennium Village, sub location of Yala division, Siaya district, Kenya. The general objective of this study was the adoption of legume fallows in Sauri millennium village with specific objectives;- (i) To study the current status of legume fallows in Sauri millennium village (ii) To investigate the leguminous tree species for high fuelwo...

Linkages Between Integrated Soil Fertility Management Technologies And Marketing Of Smallholder Produce In Meru South And Mbeere Districts, Kenya

ABSTRACT Land degradation and declining soil fertility are increasingly being viewed as critical problems affecting agricultural productivity and human welfare in tropical Africa. It is then imperative that improving soil fertility is key entry point for achieving food security, reducing poverty and preserving the environment for smallholder farms in Africa. However, due to high costs of inorganic fertilizers, tackling soil fertility issues thus requires a holistic approach that integra...

The Contribution Of Rainwater Harvesting From Roof Catchments In Increasing Water Resources For Nairobi City County Residents

ABSTRACT Nairobi City County is faced with acute water scarcity. The daily deficit is currently 170,000 m3 /day which accounts for about 23%. This deficit will escalate as population increases. However, streets are often flooded during heavy rains and water harvesting has been neglected. The County relies mainly on surface water sources from Athi River basin, Tana River basin and over 3000 boreholes. The objectives of this study were to assess volumes of rainwater that can be harveste...

Effects Of Soil And Water Conservation Techniques On Soil Productivity And Bean Grain Yield In Nyamasheke District, Rwanda

ABSTRACTErosion due to water runoff is one of the major factors that lead to poor soil productivity in Sub-Saharan Africa. The increase in population has driven the populace to inhabit marginal frontiers; worsening the erosion problem. This study evaluated the effects of some soil and water conservation (SWC) techniques on soil productivity and bean yield in Nyamasheke District; characterized by steep topography, higher precipitation and intensive agricultural activities. The study was conduc...

Defluorination Of Drinking Water Using Coalesced And Un Coalesced Mica

Abstract This is a sorption study that focused on the use of mica clay mineral grouped into mica untreated, activated mica at 800 °C, mica impregnated separately with iron and aluminium for defuoridation of water. In this study, characterization of adsorbent was done by using XRF and XRD and quantifcation of fuoride by using fuoride ion selective electrode. Characterization of adsorbent showed the presence of SiO2, CaO, P2O5, Fe2O3 and Al2O3 in the adsorbent. XRD exhibited higher co...

Recycling Of Waste Plastic Materials For The Production Of Ceiling Tiles Using Sawdust Reinforcement

ABSTRACT Plastic was recognised as the most useful innovation in the 19th century by many scientists for its unique characteristics. However, it has become the biggest environmental hazard in the 20th century when it is disposed as waste. Plastic do not degrade naturally and when it is disposed in an ad hoc manner, it creates numerous environmental problems that can deteriorate the life of flora and fauna. Recycling is one of the most important actions currently available to reduce thes...

Investigation on Poor Water Quality Supply in Calabar: A Case Study of Cross River State Water Board

Increase in population and change in lifestyle has created water scarcity in many parts of the country. Microstructures for rainwater harvesting, artificial recharge and reuse of water are becoming more and more popular to solve the local water problems, to mitigate water shortage and improve water quality. The study was conducted to investigate the challenges influencing the implementation of water sector reforms in Cross River State Water Board Limited and to address the poor water quality ...

Impact Of Climate Variability And Land Use Change On Streamflow In Lake Chilwa Basin, Malawi

ABSTRACTClimate and land use are the two most significant factors that influence watershed hydrology globally. The impact of climate variability on streamflow arises from changes in precipitation and temperature, leading to the adjustment of the physical and biological processes of ecosystems. Land use change impact on streamflow however varies across different regions and environments to warrant a universal theory, making it subject of scientific interest to hydrologists. The aim of this stu...

Hydraulic Analysis Of Thiba Main Canal Reach In Mwea Irrigation Scheme, Kenya

ABSTRACTAs population continues to increase especially in African and Asian countries, demand for more food is equally increasing. There have been challenges in meeting the food security needs in most countries especially those depending on rain-fed agriculture. Although a number of countries are addressing the shortfall by investing heavily on irrigated agriculture, the availability of irrigation water still remains one of the major challenges. Irrigation has been ranked as one of the activi...

Evaluating The Water Quality Within The Reticulation System Of Kwekwe Municipality During The Dry And Wet Seasons.

AbstractThe research sought to evaluate the water quality within the reticulation system of Kwekwe municipality during the dry and wet seasons and to measure the water quality parameters such as pH, turbidity, total coliforms, free and combined chlorine from the source, final stage of treatment and throughout the distribution system. It also had to consider how distance from one sampling point to another affect the quality of water. It had to consider measurement, the water treatment process,...

Simulation Of Rainfall Surface Runoff- Water Quality Effects On Surface Water Bodies In Mid-Block Of Yala

ABSTRACTIn Kenya and other countries in the world, most water treatment works derive their rawwater from rivers that flow in a watershed. Lack of proper management of watershed leadsto high runoff generated and subsequent flooding downstream leading to damagedinfrastructure, pollution and deterioration of water quality. The main aim of this study wasto simulate runoff water quality effects and establish a relationship models in three watersheds in Yala basins. The river watersheds considered ...

Optimization Of Reservoir Pressure For Management Of Water Losses In Distribution Network: Case Of Kimilili Water Supply Scheme, Kenya

ABSTRACTPotable water supply distribution networks are designed and constructed to conveytreated water from the water treatment plant to end users. In developing countries, urbanwater supplies are mostly intermittent, typically ranging from 2 hours to 4 hours in a dayand experiences high physical water losses resulting from frequent pipeline burst andrepairs along water distribution pipelines due to high water pressure heads in ageddistribution lines. Pressure management as a way of managing ...

Assessment Of The Influence Of Sand Gradation On Site Suitability For Construction Of Sand Dam; A Case Study Of Kitui South Sub County, Kenya

ABSTRACT This study was undertaken in Kitui South in Kitui County in the south eastern parts of Kenya. The main objective of the study was to develop a spatial model that can be used for selection of suitable sites for sand dam in Kitui South. Data analysis was done using three approaches. The first approach involved the use of the Remote Sensing (RS) technique where data was preprocessed and analyzed using Erdas Imagine software and Geographical Information Systems (GIS) for spatial modellin...

Determination Of The Drivers And Impacts Of Water Diversion And Abstraction In Selected Rivers In The Upper Tana Basin, Kenya

ABSTRACTThe South West Upper Tana Basin, Kiama, Chania, Kimakia and Thika sub basins, located in the central region of Kenya has been experiencing increased water abstraction and river diversions. However, the causes of this increased water abstraction have not been fully investigated. Several factors that could be responsible to these abstractions; climate change, land cover/land use changes, agricultural practices and changes in streamflow. Previous studies in the region have not determined...


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