• A comparative study of two Eucalyptus hybrid breeding strategies and the genetic gains of these strategies 

  Van den Berg, Gert J. (University of Pretoria, 2018)

  The hybrid combination between Eucalyptus grandis and Eucalyptus urophylla plays a significant role in the production of pulp in the South African Forestry Industry. Superior clones of this hybrid combination have been ...
• Effectiveness of coated seed in the establishment of herbaceous species on different mined substrates as influenced by pH and salinity 

  Pretorius, Petrus Johannes (University of Pretoria, 2018)

  Mining throughout the world is needed, especially coal mining to satisfy our need for electricity, and our entire economy is therefore dependant on mining. Competition exists for resources between mining and agriculture, ...
• Quantifying water use and nutritional water productivity of two sweet potato (Ipomoea batatasL.) cultivars grown in South Africa 

  Mulovhedzi, Ntsieni Eliah (University of Pretoria, 2018)

  The most accurate way of quantifying water use or evapotranspiration (ET) is achieved through direct physical measurements. Therefore, quantifying water use of sweet potato using the eddy covariance (EC) system which is ...
• Improved growth of hydroponically-grown rough lemon (Citrus jambhiri Lush) seedlings treated with kelp and vermi extracts 

  Muchena, Lindsay (University of Pretoria, 2018)

  A substantial number of South African citrus trees are rooted on rough lemon rootstocks. In order to ensure the successful establishment of a high percentage of young citrus trees, it is necessary to ensure that farmers ...
• Validating sap flux density measurement methods in Citrus sinensis (L.) 

  Banda, Mathew (University of Pretoria, 2018)

  Sap flux density (SFD) measurements methods have been widely used in woody plants to accurately quantify tree water use (transpiration). Two different methods viz., heat ratio method (HR) and the compensation heat pulse ...
• Estimating the volumetric water footprint of swiss chard (Beta vulgaris) and carrot (Daucus carota) grown in the Highveld Region South Africa 

  Matlala, Matswatswe Nosey (University of Pretoria, 2018)

  This study estimated the total volumetric water footprint (WF) of two vegetable crops, a root vegetable crop (carrot) and a leafy vegetable crop (Swiss chard) grown in Gauteng Province, South Africa. South Africa is a water ...
• Maximizing dry bean (Phaseolus vulgaris L.) production through selected agronomic practices 

  Mathobo, Rudzani (University of Pretoria, 2018)

  Dry bean production in South Africa is lower than required for human consumption. Dry beans are rich in protein and thus an ideal replacement for expensive meat protein, especially for rural and poor communities in South ...
• A framework to apply water footprinting for sustainable agricultural water management : a case study on the Steenkoppies Aquifer 

  Le Roux, Betsie (University of Pretoria, 2018)

  This study was conducted to better understand the usefulness of water footprint (WF) information for vegetable crops produced on a water-stressed aquifer in South Africa. Different methodologies were investigated in a ...
• Nitrogen biovailability in Mauritian soils under sugarcane cultivation amended with agricultural composts 

  Laurent-Ragavan, Patricia (University of Pretoria, 2018)

  Nitrogen (N) plays a vital role in plant metabolic processes, and may cause severe economic losses in crop production if deficient. When agricultural composts are used to counteract soil impoverishment and supply crop ...
• Conyza bonariensis glyphosate tolerance as affected by origin temperature and growth stage 

  Hamman, Jacobus Muntingh (University of Pretoria, 2018)

  Glyphosate was patented as a broad-spectrum, non-selective, systemic herbicide in 1974. In 1996, glyphosate-resistant Lolium rigidum (rigid ryegrass) was reported in Australia. Since then 34 other weeds the world over have ...
• Evaluation of morpho-agronomic and nutrient variability in germplasm collection of Corchorus spp. in South Africa 

  Dube, Sweetbird Phindile (University of Pretoria, 2018)

  South Africa is known as food secure at a national level producing enough food coupled with the ability to import food if necessary to meet food and nutritional requirements of its population. However, the same cannot be ...
• Quantifying the water use of apple orchards 

  Doko, Qamani (University of Pretoria, 2018)

  High yielding apple orchards (>100 t ha-1) are becoming the norm in South Africa and it is assumed that as yields increase, transpiration rates will also increase. This raises the need for improved knowledge on water use ...
• Contributions towards a new classification of Eugenia L. (Myrtaceae) in Southern Africa 

  Van Wyk, Abraham Erasmus (Braam) (University of Pretoria, 1985)

  This study extends the work on the comparative stem and leaf anatomy of the southern African species of Eugenia presented by the author as an M.Sc. thesis in 1978. Additional sources of potential taxonomic evidence were ...
• Molecular, biochemical and physiological characteristics associated with quality and tolerance to drought and low temperature in tea (Camellia sinensis (L) O. Kuntze) 

  Mphangwe, Nicholas Ishumael Kosamu (University of Pretoria, 2017)

  Tea cultivars that make high black tea quality and are drought or low temperature tolerant are needed for sustainable tea cultivation. However, there is still a lack of precise, time- and costeffective selection criteria ...
• Calibration of sap flow techniques in citrus using the stem perfusion method 

  Sam, Mpaballeng Catherine (University of Pretoria, 2017)

  The aim of this study was to calibrate and decide on the most appropriate sap flow technique for citrus species in the laboratory by pushing water through cut branches. Various sap flux density techniques, including heat ...
• Measurement and modelling of water use of citrus orchards 

  Mahohoma, Walter (University of Pretoria, 2017)

  Water requirements of evergreen citrus orchards in semi-arid regions of the world are mostly met through irrigation. Definitive knowledge of crop water use is the fundamental basis for sound water management under these ...
• Yield and quality decline in vegetatively propagated cultivar tea (Camellia sinensis (l) O. Kuntze) under continuous mechanical harvesting 

  Madamombe, Godwil Mirirai (University of Pretoria, 2017)

  Manual plucking is highly labour intensive, occupying almost 70% of the total labour force on tea estates and accounting for approximately 40 - 45% of cost of production. The high labour costs and shortages and the cost ...
• An assessment of the local sociocultural concept of climate change and its perceived effect on forestbased livelihoods : case study of rural communities of Vhembe District South Africa 

  Ofoegbu, Chidiebere (University of Pretoria, 2017)

  Forests play an important role in climate-change management, particularly at rural community level. At the same time, forests are essential resources for human welfare and an important part of the landscape. In addition ...
• HPLC and colourimetric quantification of shikimic acid levels in crops after glyphosate treatment 

  Bestbier, Johannes Botha (University of Pretoria, 2016)

  The shikimic acid pathway is one of the major biosynthetic pathways in higher plants responsible for the biosynthesis of aromatic amino acids (tryptophan, tyrosine and phenylalanine) and multiple secondary metabolites, ...
• The contribution of manganese oxides to redox buffering in selected soils of the South African Highveld 

  Mudaly, Leushantha (University of Pretoria, 2016)

  The definition of a wetland places great importance on inundation and saturated soil conditions. The use of redoximorphic features as a soil wetness indicator is widely practiced. The reduction of Fe3+ to Fe2+, resulting ...

View more