Department of Soil Science
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Recent Submissions
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Survivorship of spekboom (Portulacaria afra) planted within the Subtropical Thicket Restoration Programme (with Corrigendum)
(Academy of Science of South Africa, 2017)No abstract available. -
Annual dynamics of winery wastewater volumes and quality and the impact of disposal on poorly drained duplex soils
(South African Society for Enology and Viticulture, 2018)The composition and volume of winery wastewater change throughout the year. Quality is usually at its worst when vintage operations are dominated by the production of red wines. The objective of this study was to investigate ... -
Searching for David within the Goliath of alien woody plant invasions in the Western Cape Province
(Academy of Science of South Africa, 2018)No abstract available. -
Restoration of wetlands on the Agulhas Plain is unlikely to generate peat
(Academy of Science of South Africa, 2018-02)Wetlands in the Nuwejaars Special Management Area (NSMA) on the Agulhas Plain of South Africa are classified as Western Cape Floodplain Wetlands1 and are characterised by dense stands of palmiet (Prionium serratum L.f.). ... -
Soil spectral characteristics and their predictive value in relation to spatial and temporal variability in wheat yield and soil quality within a long-term field trial
(Stellenbosch : Stellenbosch University, 2019-12)ENGLISH ABSTRACT: Soil is a heterogeneous growing medium, with complex processes and mechanisms that are not easy to be fully understood. Soil spatial variations may be encountered within short distances, and these variations, ... -
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 ... -
Response of soil chemical properties to irrigation with winery wastewater on a well-drained sandy soil
(South African Society for Enology and Viticulture, 2019)Most wineries in South Africa dispose of their wastewater through land application. This is carried out by irrigating small areas of cultivated pasture with the wastewater or ponding, with the former being the more general ... -
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, 2019-02)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). ... -
Improving phosphate fertilizer recommendations using soil phosphorus buffer capacity and evaluation of various P extraction tests on a variety of South-African soils
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: Phosphorus (P) fertiliser recommendations are based on extractable P levels as measured by a variety of extraction tests and should incorporate factors such as depth, bulk density and the soils phosphorus ... -
Soil and grapevine responses to irrigation with treated municipal and winery wastewaters
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: In recent years, water scarcity and the ongoing drought have had serious implications for the agricultural industry in the Western Cape. The present study investigated the sustainability of two different ... -
Organic and mineral fertilizer field trial on rooibos tea under Northern Cape climatic conditions
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: Prior to this study there was little or no information regarding fertilizer recommendations for cultivated rooibos tea under Northern Cape growing conditions. The first aim of the study was to examine the ... -
Design of a pot experiment to study the effect of irrigation with diluted winery wastewater on four differently textured soils
(South African Water Research Commission, 2016-01)Due to the intensification of environmental legislation, the wine industry is expected to find solutions for the treatment or re-use of winery wastewater. The objective of the study was to design and evaluate a pot experiment ... -
Effect of NPK application on rooibos (Aspalathus linearis) under Clanwilliam field conditions
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Currently no macronutrient fertiliser recommendations have been established for rooibos plants under field conditions. The aim of this study was to examine the interactive effect of NPK (nitrogen, phosphorus, ... -
Development, optimization and use of a reduced-sample, water dispersible clay extraction technique for taxonomic horizon discrimination
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Water dispersible clay (WDC) is defined as the colloid fraction which disperses in water without removal of cementing compounds or the use of dispersing agents. It is a commonly determined parameter and ... -
Evaluation of a peri-urban smallholder farmers’ soil amendment practices on soil quality and crop growth, yield and quality
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Peri-urban, smallholder farmers surrounding Cape Town, which are the main producers of fresh vegetables in the region, are generally not producing at their optimum level due to lack of agronomic support, ... -
Soil water balance and root development in Rooibos (Aspalathus linearis) plantations under Clanwilliam field conditions
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Rooibos (Aspalathus linearis) can only grow in certain parts of the Western– and Northern Capes, whereas the production declines every year. If the global demand trend continues to increase, the production ... -
The effect of irrigation scheduling on the performance of young apple trees in newly established orchards
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: During a study conducted in a newly established orchard on a gravelly soil in Grabouw, the most effective irrigation schedule for optimum performance, including root growth and root distribution, of ... -
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 ... -
Prescribing innovation within a large-scale restoration programme in degraded subtropical thicket in South Africa
(MDPI, 2015)Commonly cited requirements for bridging the “science‑practice divide” between practitioners and scientists include: political support, communication and experimentation. The Subtropical Thicket Restoration Programme was ...
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