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Dissertations / Theses on the topic 'Soil conservation – South Africa – Swartland'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Germishuys, Hendrik Johannes. "'n Ondersoek na gronderosie in die Swartland." Thesis, Cape Technikon, 1992. http://hdl.handle.net/20.500.11838/2171.

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Thesis (MTech (Civil Engineering))--Cape Technikon, 1992.<br>In the Western Cape, gully ("donga") erosion is characteristic of the Swartland area where the effects of the problem have reached spectacular dimensions. In 1942 the Social and Economic Planning Council commissioned an investigation into the distribution and prevention of gully erosion. This investigation was led by Professor W J Talbot of the University of Cape Town, with the collaboration of researchers from the University of Stellenbosch. This led to the "Swartland and Sandveld" publication in August 1945. Little progress h

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2

Wessels, Pieter Gerhardus Wilhelmus. "Soil nitrogen dynamics and spring wheat (Triticum aestivum) production in different cropping systems in the Swartland." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52455.

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Thesis (MScAgric)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: Protein and oilseed production in the winter rainfall region of South Africa (primarily the Southern and Western Cape) is well below the potential for the area. One possible method of increasing production is to convince producers that the inclusion of protein and oilseed rotational crops will enhance the sustainability of wheat production systems. A project to investigate, quantify and elucidate the effect of canola (Brassica napus), lupins (Lupinus angustifolius) and medics (Medicago spp.) on subsequent wheat (

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3

Morel, Anneke. "Soil erosion and land degradation in the Swartland and Sandveld, Western Cape province, South Africa : a re-evaluation." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/9681.

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Bibliography: leaves 140-151.<br>The Swartland and Sandveld are situated in the Western Cape province (political limits) in what is also known as the southwestern Cape region . This area falls within the winter rainfall (or Mediterranean) region of South Africa and has a sharply defined seasonal climate. Vegetation in the region is unique. The soils in the Swartland and Sandveld vary greatly over short distances, making this area vulnerable to varying erosion rates. Land use in the Swartland and Sandveld is mainly agricultural. Soil erosion is driven by the force of wind and or water. Sheet fl

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4

Maali, Safiah Hasan. "Biomass production, yield and quality response of spring wheat to soil tillage, crop rotation and nitrogen fertilisation in the Swartland wheat producing area of South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2003. http://hdl.handle.net/10019.1/949.

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Thesis (PhD(Agric) (Agronomy))--University of Stellenbosch, 2003.<br>108 leaves printed on single pages, preliminary pages i-vi and numbered pages 1-1 to 1-5 to 9-1 to 9-3. Includes bibliography, list of abbreviations and 22 figures in color. Digitized at 300 dpi grayscale and 300 dpi 24-bit Color to pdf format (OCR), using an HP Scanjet 8250 Scanner.<br>ENGLISH ABSTRACT: A long term experiment was conducted at the Langgewens Experimental Farm, near Malmesbury in the Western Cape province of the Republic of South Africa. The effect of soil tillage, crop rotation and nitrogen fertiliser rates

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5

Becker, Carina Helene. "The influence of soil properties on the growth and distribution of Portulacaria Afra in subtropical thicket, South Africa." Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1013046.

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Subtropical Thicket is the dominant vegetation biome in the Eastern Cape, and extends through to parts of the Western Cape. It is dominated by Portulacaria afra (spekboom), a woody succulent plant recognised for its importance as an ecosystem engineer and its carbon sequestration potential. Due to excessive grazing from domestic stock, spekboom has been completely removed from some areas. The Subtropical Thicket Restoration Programme (STRP) initiated a large scale restoration programme of planting spekboom cuttings in these degraded areas. Their efforts have been met with varying levels of suc

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6

Mills, A. J. "Reciprocal relationships between vegetation structure and soil properties in selected biomes of South Africa." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53567.

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Thesis (PhD) -- Stellenbosch University, 2003.<br>Please refer to full text to view abstract.<br>ENGLISH ABSTRACT: The effects of different land use practices on soil quality in South Africa were investigated in five contrasting biomes, with a particular emphasis on the tendency of soils to crust and soil C content. Soil quality is a nebulous concept and its applicability in the South African landscape is scrutinised. A wide range of chemical and physical soil properties were examined. The tendency of soils to crust was assessed using modulus of rupture, water dispersible clay and a new m

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7

Muzangwa, Lindah. "Cover crop biomass production and effects on weeds and soil fertility in a maize-based conservation agriculture system." Thesis, University of Fort Hare, 2011. http://hdl.handle.net/10353/484.

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Low cover crop biomass production is a major obstacle to the success of conservation agriculture currently promoted as panacea to the inherent problem of soil erosion and loss of soil productivity in the Eastern Cape (EC). Therefore, this study evaluated cover crop management strategies for optimizing biomass production for better soil cover, soil nitrogen (N) and phosphorus (P) fertility, weed control and maize yields. The strategies tested are cover crop bicultures, selection of an adapted lupin cultivar and seeding rate, and the feasibility of rain fed winter cover cropping. The cover crop

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8

Nteyi, Sinovuyo Mava. "Effects of crop rotation and tillage system on the control of ryegrass (lolium multiflorum X perenne) in wheat (triticum aestivum) in the Swartland production area of South Africa's Western Cape Province." Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1020990.

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A major challenge facing agriculture today is to sustain the productivity of agricultural systems with the reduction of weed invasion. The Swartland region in the Western Cape (South Africa) is intensively cropped, producing wheat (Triticum aestivum) as the major crop. As a result of the weedy ryegrass invasion the wheat yield is reduced. In addition, ryegrass has developed resistance to grass herbicides (graminicides). This situation has increased the need to use alternative practices for controlling the invasion of ryegrass in wheat fields. In this regard, crop rotation and tillage systems w

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9

Kapp, Caro. "Nematode soil community structure and function as a bio-indicator of soil health in fynbos and deciduous fruit orchards." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80089.

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Thesis (MScAgric)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Soil is a fundamental, non-renewable resource in any ecosystem. To uphold food production for increasing global human populations, it is imperative to develop ways in which to sustain healthy biological productivity and sustainability of agricultural soils. Nematodes are one of the most abundant groups of Metazoa occurring in all soils, and form an integral part of the soil food web at several trophic levels. They respond rapidly to changes within their environments, and can easily be extracted from soil, identified and cha

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10

David, Ighodaro Ikponmwosa. "Smallholder farmer's adoption decision-making processes in the utilisation of soil conservation practices in South Africa: the case of Qamata Irrigation Scheme, in the Eastern Cape." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/1740.

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The goal of this study was to determine the nature and factors influencing smallholder farmers in their adoption decision-making regarding the use of soil conservation practices introduced by extension practitioners in South Africa, using the case of farming at Qamata Irrigation Scheme, Eastern Cape. Using a central argument (thesis statement), the study argued that an adequate understanding and definition of smallholder farmers’ adoption decision-making process is very crucial to solving the problem of soil erosion/ degradation problem amongst smallholder farmers. Adopting the case study rese

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11

Medinski, Tanya. "Soil chemical and physical properties and their influence on the plant species richness of arid South-West Africa." Thesis, Stellenbosch : University of Stellenbosch, 2007. http://hdl.handle.net/10019.1/2157.

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Thesis (MScConsEcol (Conservation Ecology and Entomology)--University of Stellenbosch, 2007.<br>Understanding the drivers and mechanisms of changes in plant richness is a basis for making scientifically sound ecological predictions and land use decisions. Of the numerous factors affecting plant richness, soil has a particularly large influence on the composition and structure of terrestrial flora. Infiltrability is one of the most important factors determining soil moisture, and therefore is of particular interest in semi-arid ecosystems, where water is one of the most limiting resources. Othe

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12

Wiese, Jacobus Daniel. "The effect of crop rotation and tillage practice on soil moisture, nitrogen mineralisation, growth, development, yield and quality of wheat produced in the Swartland area of South Africa." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80027.

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Thesis (MScAgric)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: This study was done during 2010 and 2011 as a component study within a long-term crop rotation/soil tillage trial that was started in 2007 at the Langgewens Research Farm near Moorreesburg in the Western Cape Province of South Africa. The aim of this study was to determine the effect of crop rotation and soil tillage on the soil moisture content, mineral-N levels of the soil, leaf area index, chlorophyll content of the flag leaf, biomass production, grain yield and grain quality of spring wheat (Triticum aestivum L).

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13

Mzobe, Pearl Nonjabulo. "Sediment linkages in a small catchment in the Mount Fletcher southern Drakensberg region, South Africa." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1013224.

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Soil erosion is a persistent problem that requires continued control efforts as agricultural land loses productivity and communities dependent on the land become increasingly vulnerable to decreased food security. The negative effects of soil erosion in Khamopele River catchment, in the Mount Fletcher southern Drakensberg region of South Africa, are manifest in extensive gullying and wetland loss. Soil erosion has resulted in siltation in a recently constructed dam and the alteration of aquatic habitats. This research was undertaken to identify the sources of eroded sediment in the small upper

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14

Van, der Waal Benjamin Wentsel. "The influence of Acacia Mearnsii invasion on soil properties in the Kouga Mountains, Eastern Cape, South Africa." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1005515.

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The invasion of Acacia mearnsii in the Kouga catchment, Eastern Cape, South Africa, has various negative impacts on the ecosystem. These impacts include: reduced species richness, increased water use, increased nutrients and increased N cycling rates. The native shrubby fynbos vegetation has adapted to the acidic nutrient poor soils and Mediterranean climate of the Kouga Mountains. Fynbos, however, is currently being out competed by the much taller Acacia mearnsii trees, due to their competitive nature and ability to fix nitrogen, thereby enriching the soil. The invaded sections of the valley

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15

Jones, F. Elizabeth (Freda Elizabeth). "An assessment of the potential for utilisation of soil-stored seed, from on- and off 'conservation islands' (isolated mountains), as an indicator of restoration potential of degraded sites in semi-arid Karoo areas." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51592.

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Thesis (MSc)--University of Stellenbosch, 2000.<br>ENGLISH ABSTRACT: The composition and state of soil-stored seed banks on- and off the mesa Tafelberg, in the Nama Karoo rangelands of the Eastem Cape, South Africa, were investigated within the context of a broader restoration ecology project "Restoration of degraded Nama Karoo rangelands: the role of conservation islands'". The premise for this seed bank study was that restoration of degraded semi-arid rangelands is possible through applied management programs based on the methodology and practice of ecological restoration. Broadly ackn

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16

Simanga, Siyabulela. "Vegetation and soil characteristics around water points under three land management systems in semi-arid rangelands of the Eastern Cape, South Africa." Thesis, University of Fort Hare, 2013. http://hdl.handle.net/10353/d1015795.

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This study investigated the vegetation and soil characteristics in relation to distance from water points under different land management systems in semi-arid rangelands of South Africa. Six study sites, two each from communal grazing, commercial farming and game reserves were selected. Two watering points were selected in each study site. Two 500 m transects were laid from the selected watering points. Each transect was divided into sub-transects at 25 m, 50m, 100m, 200m, 300m and 500m from water points. A 100 m2 plot was marked in each sub-transect to record grass biomas, species composition

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17

Mupambwa, Hupenyu Allan. "Winter rotational cover crops effects on soil strength, aggregate stability and water conservation of a hardsetting cambisol in Eastern Cape Province, South Africa." Thesis, University of Fort Hare, 2012. http://hdl.handle.net/10353/453.

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Winter rotational cover crops (WRCC) are often used to boost soil fertility and plant nutrition. However, selection and use of WRCC for soil physical improvement is usually overlooked. The objective of this study was to determine the effects of WRCC on soil strength, aggregate stability and water conservation of a hardsetting soil. The soil physical properties were determined after four rotations of growing monocultures of vetch (Vicia dasycarpa cv. Max), lupin (Lupinus angustifolius cv. Tanjil) and oats (Avena sativa cv. Sederberg) and after two rotations of growing bicultures of oats (Avena

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18

Murungu, Farayi Solomon. "Evaluation and management of cover crop species and their effects on weed dynamics, soil fertility and maize (Zea mays L.) productivity under irrigation in the Eastern Cape Province, South Africa." Thesis, University of Fort Hare, 2010. http://hdl.handle.net/10353/335.

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The current interest in conservation agriculture (CA) technologies is a result of the need to reduce excessive land degradation in most crop producing areas as well as to enhance sustainable food production. Cover crops that are usually grown under CA to provide soil cover, may offer secondary benefits, depending on the farming system. The concept of growing cover crops is a relatively new phenomenon to smallholder farmers. Production of large biomass yields and weed suppression from cover crops were major challenges affecting success and uptake of CA technologies by smallholder irrigation far

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19

Jasson, Rene. "Management of Acacia species seed banks in the Table Mountain National Park, Cape Peninsula, South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/1655.

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Thesis (MScAgric (Conservation Ecology and Entomology)--University of Stellenbosch, 2005.<br>Within the Table Mountain National Park (TMNP), Western Cape, South Africa, various management practices have been undertaken in the removal of alien vegetation. While considerable success in the control of alien plants is evident from the removal of standing plants, it is not known if this effort has actually made any long-term difference in the effort to eliminate alien vegetation from the TMNP. This is because no coordinated effort has been made to assess the extent of the alien seed bank, nor the e

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20

Memiaghe, Herve Roland. "Old field restoration : vegetation response to soil changes and restoration efforts in Western Cape Lowlands." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/1956.

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Thesis (MScConsEcol (Conservation Ecology and Entomology))--Stellenbosch University, 2008.<br>In the Mediterranean climate regions of the world, agricultural practices have caused considerable landscape transformation and lead to introduction of alien species that now dominate secondary succession on abandoned agricultural fields. Various restoration attempts have been made to reduce alien plant species cover, and to enhance the re-establishment and cover of native plant species. However, results and successes were mostly short-term due to re-growth and persistence of the weedy alien spec

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21

Van, der Waal Benjamin Wentsel. "Sediment connectivity in the upper Thina Catchment, Eastern Cape, South Africa." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1019754.

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[Portion of abstract]: Sediment dynamics are influenced by transformed landscape connectivity in catchments worldwide. The upper Thina catchment, an important high rainfall resource in the northern Eastern Cape, South Africa, is an example of where ongoing subsistence farming on communal land has led to overgrazing and trampling that has initiated large erosive features (e.g. gullies) and river incision. The formation of gullies led to increased hillslope-channel connectivity and the resultant river incision decreased the channel-valley fill connectivity. These two changes in connectivity led

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22

Mehmel, Tara Olivia, and Heerden Tara Olivia Van. "Effect of climate and soil water status on Cabernet Sauvignon (Vitis vinifera L.) grapevines in the Swartland region with special reference to sugar loading and anthocyanin biosynthesis." Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5292.

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Thesis (MScAgric (Viticulture and Oenology))--University of Stellenbosach, 2010.<br>ENGLISH ABSTRACT: Cabernet Sauvignon, the most planted red wine cultivar in South Africa, is prone to vigorous growth with low yields. The aim of the study was to describe how Cabernet Sauvignon grapevines react to climate and irrigation within the Swartland region. Such knowledge would assist growers in decisions regarding long term as well as short term cultivation practices. This study was part of a larger project carried out by the Infruitec-Nietvoorbij institute of the Agricultural Research Council at

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23

Booi, Nozuko. "Structure and function of heuweltjies across a rainfall gradient in the South-Western Cape." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6467.

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Thesis (MScConEcol (Conservation Ecology and Entomology))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: Heuweltjies are below ground termitaria found along the west coast and the south-western and -eastern Cape. They traversing different climates, soil and vegetation types within the Succulent Karoo and Fynbos biomes. From a birds eye view, heuweltjies appear as near-circular landscape features, demonstrating clear difference in vegetation structure to their surroundings. A study of aspects of the structure and function of heuweltjies, mima-like mounds of south-western South Africa w

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24

Vosse, Shelly. "The restoration potential of fynbos riparian seed banks following alien clearing." Thesis, Stellenbosch : University of Stellenbosch, 2007. http://hdl.handle.net/10019.1/3049.

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Thesis (MScConsEcol(Conservation Ecology and Entomology)--University of Stellenbosch, 2007.<br>Riparian areas are highly complex systems with varying levels of disturbance that are highly susceptible to invasion by alien plants. Once invaded, riparian areas play a major role in the dispersal and spread of invasive alien plants (IAPs) through the river system and, in some cases, to neighbouring landscapes. Riparian areas have therefore been prioritized by many alien clearing initiatives in South Africa. Current practice for the restoration of cleared areas is minimal and relies mainly on the un

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25

Ghebremariam, Ghirmai Emun, Karen Joan Esler, and Leanne L. Dreyer. "Monitoring the success of an old-field rehabilitation trial in the winter rainfall succulent Karoo : the effect of Oxalis pes-caprae." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/4481.

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Thesis (MSc (Conservation Ecology)--University of Stellenbosch, 2004.<br>89 leaves single sided printed, preliminary pages i-xiv and numbered pages 1-89. Includes bibliography. List of tables, figures used.<br>Scanned with a Hp Scanjet 8250 Scanner to pdf format (OCR).<br>ENGLISH ABSTRACT: The main aim of an old field rehabilitation trial initiated in 2000 was to find a solution to the rehabilitation process for approximately 90 000 ha of unutilised land in the Little Karoo, South Africa. Depending only on a natural succession process to restore unutilised old fields would mean that the period

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26

Magoba, Rembuluwani Norman Nicholas. "Comparative impact of invasive alien trees and vineyards on arthropod diversity in the Cape floristic region, Western Cape." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5373.

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Thesis (PhD (Conservation Ecology and Entomology))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Invasive alien trees (IATs) and agriculture are rapidly altering the capacity of ecosystems to provide a variety of essential services, with decreasing habitat quality having an adverse effect on arthropod biodiversity. Although both agricultural intensification and IATs have an impact on ecosystems, it is unclear which of these two is currently the most severe. Here I compare the influences of vineyards and IATs on arthropod diversity in the Cape Floristic Region (CFR) from two perspecti

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27

Cooper, Amanda. "Soil conservation policy in South Africa, 1910-1992 : the human dimension." Thesis, 1996. http://hdl.handle.net/10413/8664.

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The overwhelming focus of documentary sources indicate that traditional approaches to land degradation and soil erosion in South Africa have focussed on the physical dimension of the problem and the development of practical solutions to its reduction. This study was undertaken from the viewpoint that this emphasis has resulted in the neglect of other (for example, socio-political) aspects of soil erosion and that such neglect has exacerbated the soil erosion problem manifest in South Africa. An examination of the 'human dimension' of soil erosion in South Africa was therefore undertaken throug

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Oosthuizen, Pieter Hendrik. "Die effektiwiteit van natuurlike geotekstiele in die beheer van gronderosie gemeet met behulp van reenvalsimulasietoetse." Thesis, 2014. http://hdl.handle.net/10210/10281.

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M.Ing. (Civil Engineering)<br>The purpose of this study was to determine the effectiveness of a sisal fibre natural geotextile in controlling the rate and extent of soil erosion. The effectiveness of this locally produced material was compared to other natural fibre geotextiles and other methods commonly used for the control of soil erosion. The different materials and methods were tested under the same conditions to compare the relative effectiveness of these products. The various erosion control products were subjected to laboratory tests. A rainfall simulator and an adjustable slope simulat

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Lentsoane, Peter Mpipi Morwaswi. "Evaluation of erosion models and field assessment methods as tools for monitoring and evaluation of soil erosion in landcare." Diss., 2004. http://hdl.handle.net/2263/24186.

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Land and water degradations are serious environmental concerns facing South Africa. One of the major causes is human-induced soil erosion due to intensified land uses and environmental degradation caused by bad agricultural practices and inappropriate land uses. Soil erosion is a typical and important example of land degradation that the LandCare program intends to address. In order to evaluate the success of LandCare project in addressing soil erosion evaluation tools which can be applied during the project monitoring and evaluation process. Several soil loss models and field assessment metho

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Goodman, Peter Styan. "Soil, vegetation and large herbivore relations in Mkuzi Game Reserve, Natal." Thesis, 2012. http://hdl.handle.net/10539/11291.

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Horswell, Michael Wilbur. "Spatial modelling to establish priorities for erosion control in commercial forestry plantations." 2002. http://hdl.handle.net/10413/4514.

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Commercial forestry is recognized for both its economic contribution as well as its environmental impact. Of particular concern, is the soil erosion and sedimentation of watercourses associated with forestry plantations. Environmental laws regulate many of the activities of the forestry sector. It is critical that the forestry sector ensure that its operations are compliant with the legal requirements that govern its use of natural resources. In pursuing legal compliance it is necessary to ensure that erosion control strategies are developed so as to ensure the positive effects of any interven

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Bootsma, Antoinette Alexandra. "Natural mechanisms of erosion prevention and stabilisation in a Marakele Peatland ; implications for conservation management." Diss., 2016. http://hdl.handle.net/10500/23115.

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The Matlabas mire, an actively peat accumulating wetland, is located in the headwaters of the Matlabas River, Marakele National Park, Limpopo Province, South Africa. Various seepage zones and artesian peat domes are contained in this peatland that consists of two tributaries of which the western one is partially channelled. The occurrence of decaying peat domes and desiccated areas with terrestrial vegetation, as well as the apparent erosion on the western tributary, have raised concerns on the health of this wetland. A network of piezometers was installed in the mire and results confirm tha

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Mochesane, Moseketsi Valencia. "Plant diversity in grassland of selected nature reserves and adjacent grazing areas within the Gauteng province , South Africa." Diss., 2019. http://hdl.handle.net/10500/26144.

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The relations between environmental resources and biodiversity are crucial in the proper management and conservation of grasslands. Three nature reserves were chosen around the Gauteng Province, namely Roodeplaat Nature Reserve (RNR) in Tshwane, Suikerbosrand Nature Reserve (SNR) in Heidelberg, and Abe Bailey Nature Reserve (ANR) in Carletonville. We selected three sites within RNR, SNR and ANR, and paired these with adjacent sites in private farming/grazing areas adjacent to the nature reserves. At each site, species composition, species richness and plant diversity were determined with the u

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