Browsing Doctoral Degrees (Plant Pathology) by Title
Now showing items 13-32 of 47
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The effects of Trichoderma (Eco-T) on biotic and abiotic interactions in hydroponic systems.
(2003)The following body of research provides a detailed overview of the interactive effects of biocontrol agents and environmental factors and how these influence both the host plant and pathogen populations within hydroponic ... -
An epidemiological analysis of the Phytophthora and Alternaria blight pathosystem in the Natal Midlands.
(1980)The history of the development in Natal of a forecasting service to warn of outbreaks of late blight disease caused by Phytophthora infestans is presented. The late blight pathogen and Alternaria solani, the causal ... -
The epidemiology and control of Leptosphaeria maculans cause of Crucifer Blackleg, in KwaZulu-Natal.
(1996)The perfect stage of Leptosphaeria maculans is reported for the first time in South Africa. Viable pseudothecia and pycnidia were found on dead, weathered tissue, sometimes in close association, whereas only pycnidia ... -
Epidemiology and management of grey leaf spot : a new disease of maize in South Africa.
(1996)Grey leaf spot is a relatively new fungal disease of maize in South Africa. It has become well established in the province of KwaZulu-Natal, and is capable of reducing grain yields by 20 to 60%. The disease is spreading ... -
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 ... -
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 ... -
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 ... -
Genetic effects and associations between grain yield potential, stress tolerance and yield stability in southern African maize (Zea mays L.) base germplasm.
(2005)Maize (Zea mays L.) is the principal crop of Southern Africa but production is threatened by gray leaf spot (Cercospora zea-maydis L.) and phaeosphaeria leaf spot (Phaeosphaeria maydis L.) diseases, drought and the use 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 ... -
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 ... -
Infection of Kikuyu grass (Pennisetum clandestinum) by the rust fungus Phakopsora apoda.
(1998)A rust fungus on kikuyu grass (Pennisetum clandestinum Hochst. ex Chiov.) was identified as Phakopsora apoda (Har. & Pat.) Mains., and was reported for the first time in South Africa. An investigation was conducted into ... -
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, ... -
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 ... -
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 ... -
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. ... -
Organogenesis and genetic transformation of dierama erectum hilliard.
(2016)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. -
Some effects of drying rate and wet storage on aspects of the physiology and biochemistry of embryonic axes from diesiccation- sensitive seeds.
(2004)Desiccation-sensitive seeds show differential viability characteristics during drying at different rates. A number of studies have demonstrated that rapid dehydration permits survival to lower water contents than does ... -
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 ... -
Studies on Cercospora zeae-maydis, the cause of grey leaf spot of maize in KwaZulu-Natal.
(2000)In 1983, Latterell and Rossi described grey leaf spot (GLS) of maize (Cercospora zeae-maydis Tehon and Daniels) as "a disease on the move". This pathogen has more than lived up to its reputation. It is estimated to be ...