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Browsing Natural and Agricultural Sciences by Supervisor "Labuschagne, Nico"
Now showing items 1-20 of 23
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(University of Pretoria, 2019)Plant growth promoting rhizobacteria (PGPR) are those bacteria that colonise the rhizosphere of various plants and promote growth either directly by improving nutrient uptake by the plant roots or indirectly through the ...
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(University of Pretoria, 2006-02-01)It was established that although the phytoalexin scoparone is associated with resistance/tolerance of citrus rootstocks to stem cancer caused by Phytophthora citrophthora, it does not dictate tolerance to root rot caused ...
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(University of Pretoria, 2008-08-05)Cowpea is a worldwide-distributed crop, and is important to the livelihood of poor people in developing countries. Cowpea is also susceptible to a wide range of pests and pathogens, which can cause damage to the crop at ...
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(University of Pretoria, 2018)Plant growth-promoting rhizobacteria (PGPR) are bacteria that colonize the rhizosphere and/or roots in the presence of other soil microflora and have growth promotion activity and/or biocontrol activity. Plant growth-promoting ...
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(University of Pretoria, 2008-02-27)A number of techniques were used to obtain a variety of bacterial and fungal species antagonistic to Pythium - F group in hydroponic systems. Isolations were made from roots of ‘escape’ lettuce plants in a commercial ...
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(University of Pretoria, 2008-08-13)Hydroponic production was initially explored as an alternative to field production due to the ease of plant growth control and the hopes of preventing the majority of disease causing agents known to be present in general ...
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(University of Pretoria, 2011-11-02)No abstract available.
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(University of Pretoria, 2012-10-11)Plant growth promoting rhizobacteria (PGPR) are found in the rhizosphere and directly contribute to nutrient availability and plant growth. Due to the global move away form reliance on chemical fertilisers and crop ...
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(University of Pretoria, 2009-08-12)In-vitro and greenhouse screening of 78 bacterial isolates from sorghum rhizosphere in Ethiopia and 86 isolates from the rhizosphere of grasses at Nylsvlei Nature Reserve in South Africa was conducted in terms of inhibition ...
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(University of Pretoria, 2014)Plant growth promoting rhizobacteria (PGPR) are bacteria that colonize the volume of soil surrounding plant roots (known as the rhizosphere) which, when in association with a suitable host plant, promote plant growth. The ...
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(University of Pretoria, 2011-05-24)In the current study potassium silicate (20.7% SiO2) induced a 100% inhibition of P. cinnamomi mycelial growth at all concentrations tested. Total inhibition for all fungi tested (Alternaria solani, Colletotrichum ...
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(University of Pretoria, 2008)Lettuce (Lactuca sativa L.) seedlings diseases caused by soilborne pathogens are characterised by root rot, stem rot and damping-off of the seedlings that can occur at any time during growth. Fusarium solani, Pythium ultimum ...
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(University of Pretoria, 2006-12-07)Radopholus similis is one of the key pests of banana in the East African Highlands and in the world. Although control of this pest has mainly relied on the use of clean planting material, re-infestation of plants in the ...
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(University of Pretoria, 2008-08-05)The aim of our study was to determine whether Polyphenon G (PPG, a concentrated Camellia sinensis extract) and the individual compounds in PPG had activity against phytopathogenic fungi in vitro and in vivo. The present ...
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(University of Pretoria, 2006-09-18)Please read the Summary/Samevatting on pp 138-141 in chapter 6 of this document
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(University of Pretoria, 2011-02-14)Management of Fusarium wilt of banana, one of the most important diseases of agricultural crops, is complicated and involves the consideration of factors such as the biology, epidemiology and population structure of the ...
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(University of Pretoria, 2019)Global food production has significantly increased mainly due to the use of high-yield crop varieties, fertilisers, fungicides and pesticides, and improved irrigation methods. Despite the increase in production, there has ...
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(University of Pretoria, 2018)The focus of this thesis is on the application of plant metabolomics methodologies to study citrus rootstock tolerance towards the root rot pathogen Phytophthora nicotianae. Initially, the tolerance of 16 citrus rootstocks ...
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Rhizobacteria-induced priming against Fusarium crown rot and desiccation stress in Sorghum bicolor (University of Pretoria, 2019)Untargeted ultra-high performance liquid chromatography-high definition mass spectrometry (UHPLC-HDMS) based metabolomics was applied to elucidate the metabolomic changes in Sorghum bicolor seedlings that attribute to ...
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(University of Pretoria, 2007-10-25)Please read the abstract on Chapter 5.
Now showing items 1-20 of 23