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Doctoral Degrees (Soil Science)
Recent Submissions
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Evaluating soil and terrain variables in a production environment: implications for agricultural land assessment
(Stellenbosch : Stellenbosch University, 2022-12)ENGLISH ABSTRACT: Agricultural land in South Africa is under increasing pressure to produce more food from an ever-shrinking land base, as more land is being converted to non-productive uses. Additional to these ... -
Using remote sensing and geographical information systems to classify local landforms using a pattern recognition approach for improved soil mapping
(Stellenbosch : Stellenbosch University, 2022-05)ENGLISH ABSTRACT: Presently, a major focus of digital soil mapping (DSM) in South Africa is unlocking the soil-landscape relationships of legacy soil data by disaggregating the only source of contiguous soil information ... -
Evaluation of old store-and-release covers on discard dumps and backfilled pits to improve and predict their performance for rehabilitated mines at Mpumalanga Highveld, South Africa
(Stellenbosch : Stellenbosch University, 2021-12)ENGLISH ABSTRACT: Store-and-release covers (SRCs) are an important mitigation method to protect the environment at rehabilitated mines in the Mpumalanga Highveld, South Africa. The long-term performance of SRCs can be ... -
Digital soil mapping techniques across multiple landscape scales in South Africa
(Stellenbosch : Stellenbosch University, 2019-12)ENGLISH ABSTRACT: Digital soil mapping has seen increasing interest due to environmental concerns and increasing food security issues. Digital soil mapping offers a quantitative approach which is cost effective as less ... -
Mapping soil organic carbon stocks by combining NIR spectroscopy and stochastic vertical distribution models : a case study in the Mvoti River Catchment, KZN, South Africa
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: The agricultural and environmental importance of maintaining and increasing soil organic carbon (SOC) has been increasingly recognized globally. To a large extent, this recognition can be attributed to ... -
Lipid humification by soil clays
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: We studied three aspects of the natural polymerisation (humification) of lipids by soil clays – namely, the products formed, reaction mechanism and kinetics – at environmental temperatures (c. 20–50°C). ... -
Effect of different biochars on inorganic nitrogen availability
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Biochar (a fine pyrolysed organic material) is an amendment used to increase and sustain productivity, reduce environmental pollution and sequester carbon (C) in soils. Successes were reported in improving ... -
Mitigation of soil and ground water pollution caused by on-land disposal of olive mill wastewater
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Olive mill wastewater (OMW) is generated in large quantities, particularly in the regions with a Mediterranean climate where olive oil is produced on a commercial scale. Some producers collect the effluent ... -
Using diluted winery effluent for irrigation of Vitis Vinifera. Cv. Cabernet Saugvignon and the impact thereof on soil properties with special reference to selected grapevine responses.
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Wine production is an important industry in the Western and the Northern Cape regions of South Africa. Wineries produce large volumes of poor quality wastewater, particularly during harvest. International ... -
In situ denitrification on nitrate rich groundwater in South Africa
(Stellenbosch : Stellenbosch University, 2015-12)ENGLISH ABSTRACT: South Africa is a water scarce country and in certain regions the quantity of surface water is insufficient to provide communities with their domestic water needs. In many arid areas groundwater is often ... -
Modeling and regulating hydrosalinity dynamics in the Sandspruit river catchment (Western Cape)
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Bugan, R.D.H. Modelling and regulating hydrosalinity dynamics in the Sandspruit River catchment (Western Cape). PhD dissertation, Stellenbosch University. The presence and impacts of dryland salinity ... -
The contribution of indigenous vegetables to food security and nutrition within selected sites in South Africa
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: South Africa is rich in biodiversity among which are semi-domesticated vegetable species which are known as wild or indigenous vegetables. These wild indigenous vegetables have been reported to be good ... -
Remote sensing of salt-affected soils
(Stellenbosch : Stellenbosch University, 2013-03)ENGLISH ABSTRACT: Concrete evidence of dryland salinity was observed in the Berg River catchment in the Western Cape Province of South Africa. Soil salinization is a global land degradation hazard that negatively affects ... -
Interrelationships among soil water regime, irrigation and water stress in the grapevine (Vitis vinifera L.)
(Stellenbosch : Stellenbosch University, 1984-12)ENGLISH ABSTRACT: No abstract available -
Die gronde van die Karoo
(Stellenbosch : Stellenbosch University, 1988)ENGLISH ABSTRACT: Soil information pertaining to one of the most extensive arid and semi-arid areas of South Africa is limited. This area, known as the Karoo, comprises 36 million hectares or 32% of the surface area of ... -
Water consumption of South African vineyards : a modelling approach based on the quantified combined effects of selected viticultural, soil and meteorological parameters
(Stellenbosch : Stellenbosch University, 1998-12)AFRIKAANSE OPSOMMING: Normaalweg word slegs een of twee stelle gewasfaktore in kombinasie met 'n verwysingwaterverbuik (ET) vir die beraming van gewas waterverbruik (ET) van wingerde gebruik. As gevolg van variasie tussen ... -
Evaluation of selected legumes for sustainable weed ecology/soil fertility/livestock management interactions in crop-livestock systems of the moist savannah of Nigeria
(Stellenbosch : Stellenbosch University, 2004-03)ENGLISH ABSTRACT: This project aimed at enhancing the net benefit in production systems. It took a holistic approach to evaluate the potential interactions of herbaceous legumes in relation to weed dynamics, soil fertility ... -
Reciprocal relationships between vegetation structure and soil properties in selected biomes of South Africa
(Stellenbosch : Stellenbosch University, 2003-12)Please refer to full text to view abstract. -
Sanjeevak as a source of nutrients and phytohormones for production and propagation of plants
(Stellenbosch : Stellenbosch University, 2012-03)ENGLISH ABSTRACT: The use of cowdung as an organic fertilizer in Asian and African agriculture is an ancient practice. This explains its renewed interest, partly due to the financial inability of most farmers to purchase ... -
Soil Formation on the Namaqualand Coastal Plain
(Stellenbosch : University of Stellenbosch, 2008-03)The (semi-)arid Namaqualand region on the west coast of South Africa is wellknown for its spring flower displays. Due to the aridity of the region, soils research has lagged behind that of the more agriculturally productive ...