Doctoral Degrees (Plant Pathology)
Recent Submissions
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A study on avocado sunblotch viroid (asbvd) with a focus on symptomless carrier trees.
The avocado (Persea americana Mill.) is an important subtropical fruit worldwide (Blakey et al, 2014). South Africa is among the top five avocado exporters and the exports are primarily aimed at the European market ... -
Banana bunchy top virus in South Africa: the distribution, molecular relationship and transmission studies.
(2021)The first report of Banana bunchy top virus (BBTV) in KwaZulu-Natal (KZN), South Africa in 2016 has raised the need to study the virus in South Africa. The aim of this research project was to conduct surveys across ... -
Scirtothrips aurantii faure (thysanoptera: thripidae) population dynamics, biological control, and the characterisation of bracharoa mixta (snellen) (lepidoptera: erebidae) and wind in scarring avocado, persea americana miller (lauraceae)
(2020)Avocado (Persea americana miller) production is a growing, multibillion rand, export oriented industry in South Africa employing tens of thousands of people and contributing significantly to the local GDP. To remain ... -
Study on the use of biopesticides against cotton insect pests under field conditions and their cost benefits.
(2022)Cotton (Gossypium hirsutum L.) is one of the essential fibre crops. However, production is affected by several factors including low yields, high input costs, pests, and weeds infestations. Biopesticides can play a vital ... -
Biological control of sorghhm and rice stem borers, chilo partellus and sessamia calamistis using endophytic strains of beauveria bassiana.
(2018)Sorghum and rice are two of the major cereals grown across the world. Both of these crops are subjected to a range of abiotic and biotic constraints. Insect pests are important biotic stress factors, which affect both of ... -
Ethnopharmacological study on plants used for skincare and beauty by some Xhosa communities.
(2018)The paraphrase “beauty lies in the eyes of the beholder” by Plato, a Greek philosopher, has echoed through the fabrics of time and still echoes in our generation. The statement simply ought to refer to that the observer ... -
Biological control of three grain storage pests: maize weevil, Sitophilus zeamais (Motschulsky), almond moth, Ephestia cautella (Walker) and cigarette beetle, Lasioderma serricorne (Fabricius), using novel strains of Beauveria bassiana (Balsamo) Vuillemin in powder formulation.
(2017)Abstract available in PDF file. -
Prevalence, detection and characterization of tomato spotted wilt and iris yellow spot tospoviruses occuring in Zimbabwe.
(2017)Abstract available in PDF file. -
Identification and characterization of viruses infecting cucurbits in the province of KwaZulu-Natal, Republic of South Africa, with the purpose of developing transgenic virus-resistant cucurbits.
(2016)The continued presence of cucurbit-infecting viruses across the Province of KwaZulu- Natal (KZN), South Africa requires exploration of alternative methods of controlling these viruses. The aim of this research project ... -
Integrating microdosing of fertilizers with biological control agents for maize production in the Eastern Cape, South Africa.
(2015)Maize is an important staple crop in South Africa, and is also used for animal feed. In the Eastern Cape Province in South Africa a larger percentage of the farmers are small scale farmers and lack financial resources to ... -
Organogenesis and genetic transformation of dierama erectum hilliard.
(2016)Abstract available in PDF file. -
Use of trichoderma and bacillus isolates as seed treatments against the rootknot nematode, meloidogyne javanica (chitwood)
(2015)Abstract available in PDF file. -
Development of a new entomopathogenic nematode species, steinernema innovation : biological characterization and mass production.
(2014)Entomopathogenic nematodes belonging to the genera Steinernema and Heterorhabditis are employed as environmental friendly biopesticides to control key pests in high value agricultural crops. Their successful application ... -
Studies on Puccinia recondita f. sp. tritici with special emphasis on adult plant resistance in wheat.
(1986)Leaf rust (Puccinia recondita f.sp. tritici) of wheat (Triticum aestivum) was widespread in South Africa during 1983, 1984 and 1985 and often reached epidemic levels, especially on autumn-sown spring wheat in the Cape ... -
The use of Agrobacterium for plant improvement.
(1994)Agrobacterium species have potential as tools for plant improvement, in that they can be used as biological control agents against crown gall disease, vectors for gene insertion into plants and plant root-inducing ... -
Studies on the expression of resistance to stem rust of wheat caused by Puccinia graminis f.sp. tritici.
(1991)The endogenous cytokinin levels of healthy primary leaves and seeds of a stem-rust susceptible wheat cultivar Little Club were compared with those of Little Club containing the stem rust resistance gene Sr25. Use was ... -
Studies on Alternaria porri and Stemphylium vesicarium on Allium spp.
(1993)During surveys in South Africa, Alternaria porri (Ellis) cif. and Stemphylium vesicarium (Wallr.) E. Simmons were found to be destructive seed-borne pathogens of onion (Allium cepa L. ). These two pathogens are also ... -
A study on the ultrastructure and control of the gladiolus rust pathogen, Uromyces transversalis.
(1988)The substomatal vesicle of Uromyces transversalis develops in five distinct stages after the formation of a single infection peg in the host plant Gladiolus spp. The primary hyphae of the substomatal vesicle orientate ... -
Studies on the expression of resistance of Coffea selections to Hemileia Vastatrix.
(1990)Physiological races of Hemileia vastatrix in southern Africa were identified. Prevalent races were I (2.2%), II (88.9%) and III (2.2%). Six samples could not be identified. Twelve biotypes of race II were distinguished. ...
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