Browsing Doctoral Degrees (Plant Pathology) by Issue Date
Now showing items 21-40 of 49
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Biological control of the common house fly (Musa domestica L.) using Bacillus thuringiensis (Ishiwata) berliner var. Israelensis and Beauveria bassiana (Bals.) vullemin in caged poultry facilities.
(2008)The entomopathogenic fungus Beauveria bassiana and the bacterium Bacillus thuringiensis var. israelensis (Bti) have been widely studied for their role in biocontrol against many arthropods and extensively exploited for ... -
Bioremediation of arsenic contaminated groundwater.
(2008)Sulphate-reducing bacteria (SRB) mediate the reduction of metals/metalloids directly or indirectly. Bioremediation of arsenic contaminated water could be a cost-effective process provided a cheap carbon source is used. To ... -
Studies on the use of biocontrol agents and soluble silicon against powdery mildew of zucchini and zinnia.
(2008)Powdery mildew (PM) is an important foliar disease of many crops, occurring under both greenhouse and field conditions. The application of biological control and soluble silicon (Si) against PM has received increasing ... -
Management of fusarium wilt diseases using non-pathogenic Fusarium oxysporum, and silicon and Trichoderma harzianum (ECO-T®)
(2008)In the genus Fusarium are many important plant pathogens. The diversity of hosts the genus attacks, the number of pathogenic taxa and the range of habitats in which they cause disease are the greatest in plant pathology. ... -
Isolation of entomopathogenic gram positive spore forming bacteria effective against coleoptera.
(2009)Fourteen spore-forming bacterial strains were isolated and screened for entomopathogenic activity. Five displayed toxicity towards the common mealworm, Tenebrio molitor L., (Coleoptera: Tenebrionidae). The majority of the ... -
Biological control of the two-spotted spider mite, Tetranychus urticae Koch (Acari : tetranychidae).
(2009)The two-spotted spider mite (TSM), Tetranychus urticae Koch, is an important pest of many greenhouse and field crops worldwide. The development of resistance in TSM populations to chemical acaricides, allied with public ... -
Integrated use of yeast, hot water and potassium silicate treatments for the control of postharvest green mould of citrus and litchi.
(2010)There is a growing recognition globally that many agrochemicals are hazardous to humans, animals and the environment. Therefore, there is a need to substitute these chemical products with biological and physical treatments, ... -
A study of the diversity of Burkina Faso rice landraces and identification of source of resistance to rice yellow mottle virus (RYMV)
(2011)The main goals of this study were to ascertain farmers' preferred traits in rice landraces and their perception of Rice yellow mottle virus, to collect rice landraces across Burkina Faso, investigate their genetic diversity, ... -
Biological and molecular characterization of South African bacteriophages infective against Staphylococcus aureus subsp. aureus Rosenbach 1884, casual agent of bovine mastitis.
(2012)Bacteriophage therapy has been exploited for the control of bacterial diseases in fauna, flora and humans. However, the advent of antibiotic therapy lead to a cessation of most phage research. Recently, the problem of ... -
A genetic study of resistance to African Rice Gall Midge in West African rice cultivars.
(2012)The African Rice Gall Midge (AfRGM), Orseolia oryzivora Harris and Gagné (Diptera: Cecidomyiidae), is an endemic rice pest found throughout Africa. The failure of most other control methods imposes the need to use crop ... -
Genetic diversity of Oryza species in Niger ; screening and breeding for resistance to rice yellow mottle virus (RYMV)
(2012)Rice is a staple food in many West African countries, including Niger. However, both regional and national rice production have failed to meet demand due to several constraints, among which is the Rice yellow mottle virus ... -
Evaluation of diazotrophic bacteria as biofertilizers.
(2013)Inoculation with diazotrophic bacteria is well documented as a means to enhance growth and increase yields of various crops, especially when used as an alternative or a supplement to the use of nitrogenous fertilizers and ... -
The development of transgenic sweet potato (Ipomoea batatas L.) with broad virus resistance in South Africa.
(2013)Sweet potato (Ipomoea batatas Lam.) is ranked as the seventh most important food crop in the world and its large biomass and nutrient production give it a unique role in famine relief. However, multiple virus infection is ... -
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 ... -
A study on avocado sunblotch disease.
(1980)Avocado sunblotch disease is a graft-transmissible disorder known for over 60 years and has now been recorded in at least eight countries around the world. Affected trees develop yellow, depressed streaks on young ... -
Application of transmissible agents to control citrus tree size.
(1997)Establishing citrus orchards at higher densities has become standard practice in South Africa. These plantings make more efficient use of inputs such as land, fertilizer, irrigation and spraying, and they are capable of ... -
Use of trichoderma and bacillus isolates as seed treatments against the rootknot nematode, meloidogyne javanica (chitwood)
(2015)Abstract available in PDF file. -
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 ... -
The characterisation of turkey rhinotracheitis virus from chickens and the development of a suitable vaccine.
(1994)Three turkey rhinotracheitis virus-like (TRTV-like) isolates were isolated from chickens with swollen heads. All grew well via the yolk sac (y/s) , chorioallantoic membrane (CAM), tracheal organ culture (TOC) , chicken ... -
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 ...