Environmental & Physical Sciences

Environmental & Physical Sciences Research Papers/Topics

Comparative Effects Of Minjingu Phosphate Rock And Triple Super Phosphate On Residual P In An Ultisol

ABSTRACT The use of relatively high rates of phosphorus (P) is known to result in a build up of P in soils and there are frequent claims that the use of phosphate rocks results in higher residual effects than water soluble sources. Thus the objective of this study was to assess residual P in treatments where relatively larger amounts of P from triple super phosphate (TSP) and Minjingu phosphate rock were applied. Total amount of P applied was 480 kg P /ha applied to Kanhaplic Haplustult at th...

Selected Wood Properties Of Two Lesser Known And Lesser Utilized Indigenous Agroforestry Species From Kilosa District, Tanzania

ABSTRACT This study was conducted to determine basic density, fibre length and some strength properties of Lonchocarpus capassa and Combretum zeyheri suitable for growing under agroforestry systems in Kilosa district. A total of three 13 year old trees from each species were sampled in Rudewa Gongoni village for the study. Diameter at Breast Height (DBH) and height of each tree were measured. The trees were then felled and cut into logs. Each log was cross cut into three 1.5 m billets represe...

Volume And Biomass Estimation Models For Tectona Grandis Grown At Longuza Forest Plantation, Tanzania

ABSTRACT Quantifying tree volume, biomass and Carbon (C) stocks potential of tree crops by using allometric models is vital for understanding the contribution of forests on climate change mitigation effort. The existing allometric models for accurate estimations of total tree volume and total tree biomass for Teak (Tectona grandis) has limitation of application such as models being developed from few sample trees for model development and covered narrow range of diameters and excluded trees w...

Veld fire management strategies in rural areas: The case of Ward 1 in Hwedza

Abstract This study sought to assess veld fire management strategies in Hwedza Ward 1. Data was collected using questionnaires, field observation and key informant interviews. Major causes of fire in the area include hunting land clearance and smoking bees. Results show that people in Ward 1 have benefited from the introduction of a veld fire management plan that was introduced by EMA in 2010. Frequency of veld fires has declined from 31 between 2005 and 2009 to 11 between 2010 and 2014. As a...

An Exploratory Analysis of the Effects of Climate Change on Vegetation.,” The Case of Mutoko District in Mashonaland East Province, Zimbabwe

Abstract A plethora of researches have been done worldwide to determine and illustrate the effects of climate change on ecosystems, biodiversity especially on vegetation, using the most imperative climatic variables, rainfall and temperature which are of vital importance to plant species growth henceforth, determine biomes, ecosystem and woodlands plant species composition, structure and distribution. This study focused on effects of the climate change on vegetation in Mutoko District in Mas...

Isolation And Characterization Of Phosphate Rock-Solubilizing Microorganisms From Soils And Rock Phosphate Samples Of Panda Hill And Minjingu, Tanzania

ABSTRACT Plants acquire P from soil solution as the phosphate anion. Phosphorus for plant can be obtained from soluble P fertilizers or from insoluble phosphate rocks. It is highly fixed by calcium and by Fe and Al oxides depending on soil pH. Phosphorus solubilizing microorganisms play a major role in P nutrition through solubilisation of insoluble phosphate rocks. The use of phosphate solubilizing microorganisms as inoculants increases P uptake by the plant and crop yield. This study was un...

Comparative Study Between Government And Private Forest Plantations Management Practices: Case Studies Of Sao Hill And Green Resource Forest Plantations, Mufindi Iringa Tanzania

ABSTRACT The study was carried out in Sao Hill and GRL for comparison of management practices applied between government and private forest plantations. The study focused at identifying existing management practices, examining cost involved in forest management practices, assessing forest stand parameters and identify challenges facing management practices in Sao Hill and GRL in five years from 2012 to 2016. Data were collected through direct measurement in the forest stand parameters, struct...

Occupational Hazards, Injuries And Illnesses Associated With Gold Mining. A Case Of Renco Mine, Zimbabwe

ABSTRACT The main objective of this study was to assess the occupational hazards, injuries and illnesses associated with gold mining at Renco Mine. Field observations, interviews, questionnaires and secondary data sources obtained at the company SHE department were data sources used by the researcher. A purposive sampling technique was employed in choosing the General Manager, SHE manager, Mine captain and the Human Resources Manager for interviewing as key informants. Stratified random sampl...

Exploring the impact of work ethics on specific workplace practices in the ministry of Home Affairs & Immigration

Abstract The title of this study is: Exploring the Impact of Work Ethics on Specific Work Practices in the Ministry of Home Affairs & Immigration’s Division of Alien Control, Citizenship and Passports. It’s a mixed research and one of the objectives is to test the correlation between the ministry of Home Affairs and Immigration and the public’s perception on work ethics. The intention of the research is: To assess the employees’ understanding and perceptions with regard to work ethics...

Community’s Perceptions On The Adequacy Of Health And Safety Precautions Taken When Using Ddt For Indoor Residual Spraying (Irs) For Malaria Control: A Case Study Of Victoria Falls Town

Abstract. The study sought to assess community’s perceptions on the adequacy of health and safety precautions taken when using DDT for indoor residual spraying. Mixed methods were engaged in which collection of both qualitative and quantitative data collection techniques were used. Data was collected through the use of questionnaires and interviews. Questionnaires were randomly administered to a target population of ninety eight housing units. Interviews were also conducted with the key inf...

Assessment Of Household Domestic Waste Management Practices, Kiambu County- Kenya

ABSTRACT This study was carried out to access household domestic waste management practices, perceptions and attitudes, Kiambu County. Household waste is one of the basic services that are currently receiving wide attention in the urban agenda of developing Countries. Lack of effective Household domestic Waste Management has resulted in environmental health hazards and negative impacts on the environment. The study specific objectives were : To document household waste management practices , ...

A Post-Occupancy Evaluation Of Dwelling Density In Multifamily Apartments In Public Housing Estates In Lagos

ABSTRACT This study is an attempt to establish how actual dwelling density during the habitation phase correlates with the programmed dwelling density during design phase in multifamily apartments in Lagos. In this regard, the research attempts to establish design density as the number of adultequivalent persons intended to occupy an apartment. It further attempts to determine the actual dwelling density as the number of adult-equivalent persons occupying the same apartments during habitatio...

Assessing The Utilization And Socio – Economic Impacts Of Osyris Lanceolata (Hochst & Steudel) And Associated Environmental Degradation In Kitui County

ABSTRACT Arid and Semi-arid lands (ASALs) in Kenya are rich in diversity of indigenous plants that have the potential to supply marketable commodities on a sustainable basis such as gums, resins and essential oils, among others. In the recent past there has been rampant unsustainable harvesting of Osyris lanceolata in Kenya to produce raw material to support manufacturing industries. The objectives of this study were to map out O. lanceolata growing zones in targeted sub – counties, assess ...

Effects Of Air Pollution On Tomato Plants (Lycopersiconesculentum)Grown Along Waiyaki Highwayin Nairobi County, Kenya

ABSTRACT Vehicle exhaust fumes emission, as one ofleading major source amongsmoke producing air pollutants, wasexamined in thisstudy. Nairobi,a mega-citywith increasingly high levels of air pollutionwas studied with special emphasison one of its roads,Waiyaki Highway. Objectives were to find if there is air pollution,air pollution effects growth and stress of plants. This roadwasinvestigated to gain scientific understanding of the effects of vehicle fumes on plants. Hotspots (ICEA building, A...

“Housing Development Characteristics In Lagos State Peri-Urban Settlements”

ABSTRACT The emerging housing developments in Lagos State peri-urban settlements is characterised by high level of informal development, poor quality and confronted with multi-dimensional challenges. Policy response to the pattern of growth does not match the pace of rapid housing development in Lagos peri-urban settlements. This research examined the characteristics of housing development in the peri-urban settlements of Lagos State, Nigeria and specifically investigated the drivers of hous...


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