Masters Degrees (Plant Pathology)
Recent Submissions
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Occurrence of canker and wood rot pathogens on stone fruit propagation material and young stone fruit trees
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: The phytosanitary status of stone fruit propagation material and nursery trees in South Africa are not known. Canker and wood rot pathogens can be present in visibly clean material. Due to stress and ... -
Investigation of Trichoderma species colonization of nursery grapevines from improved management of black foot
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: Black foot disease (BFD) is one of the main fungal diseases associated with young grapevine decline. In recent years its incidence and severity has increased significantly, affecting both nurseries and ... -
The implementation and validation of reduced volume argrochemical applications in the south African citrus industry using novel technology
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: The South Africa citrus industry is the third largest exporter in the world and is considered one of the most important horticultural crops due to high economic export value. However, citrus trees ... -
Mycotoxin contamination of maize and groundnut produced by subsistence farmers in northern KwaZulu-Natal
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Subsistence farmers in South Africa face many production challenges including infection of their grain crops with mycotoxigenic fungi and concomitant mycotoxin contamination. Fusarium spp. and Aspergillus ... -
Understanding citrus replant disease in South Africa with the aim of developing a Methyl Bromide free management strategy
(Stellenbosch : Stellenbosch UniversityStellenbosch University, 2018-03)ENGLISH ABSTRACT: Citrus fruits are one of the most important fruit crops after deciduous fruit and vegetables cultivated in South Africa. The Citrus industry in South Africa, is seen as the third largest horticultural ... -
Dectection and quantification of soilborne pathogens in grapevine nurseries
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Black-foot disease (BFD) and crown and root rot (CRR) are important decline diseases of grapevines, worldwide. These diseases occur in both nurseries and vineyards. Black-foot disease is caused by species ... -
Diversity and detection of Kenyan and Nigerian populations of Fusarium oxysporum f. sp. strigae
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: The Genus Striga contains some of the most destructive plant-parasitic weed species in the world. These include S. hermonthica and S. asiatica, which attack important staple food crops in sub-Saharan ... -
Evaluation of maize breeding populations for resistance to Fusarium verticillioides and fumonisin contamination
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH SUMMARY: Maize is an important crop cultivated all around the world. It is the main source of carbohydrates for over 200 million people in Sub-Saharan Africa. Daily consumption rates can reach up to 500 g per person ... -
Monitoring fusarium, gibberella and diplodia ear rots and associated mycotoxins in maize grown under different cropping systems
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH SUMMARY: Maize ear rots represent a significant problem in most maize production areas resulting in reduced yield and quality due to visible fungal infection and mycotoxin contamination of maize grain. Mycotoxigenic ... -
Occurence of canker and woodrot pathogens in young apple trees and possible sources of inoculum
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: Apples are one of the most important deciduous fruit crops cultivated in South Africa. The deciduous fruit industry identified a higher occurrence of young apple trees that died due to canker or wood rot ... -
Determining the resistance or susceptibility of grapevine rootstocks used in South Africa towards fungal trunk disease pathogens
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: Grapevine fungal trunk diseases are responsible for reduced grapevine production world-wide. Trunk diseases are caused by endophytic, xylem-inhabiting pathogens associated with a wide range of symptoms. ... -
Singular and combined effect of postharvest treatments on viability and reproductive ability of phyllosticta citricarpa infections.
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: Citrus is one of the most important fruit crops globally and is currently being produced in over 100 countries. South Africa is one of the biggest shipping exporters of fresh citrus, with approximately ... -
Further optimisation of in-line aqueous application of imazalil to control citrus green mould caused by Penicillium digitatum
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: South Africa has a successful citrus export industry. A threat to fresh citrus fruit is the fungal pathogen Penicillium digitatum causing green mould. Imazalil (IMZ) is the most important fungicide to ... -
Optimisation of postharvest drench application of fungicides on citrus fruit
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: South Africa is the 2nd largest exporter of fresh citrus, after Spain, worldwide. Delays to the packline, i.e. degreening, can result in substantial postharvest decay such as green mould caused by Penicillium ... -
Quantification of apple replant pathogens from roots, and their occurrence in irrigation water and nursery trees
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Apple replant disease (ARD), an economically important disease of apple, occurs when young apple trees are planted on soil previously cultivated to apple or closely related species. Soil is considered as ... -
Mancozeb rainfastness and residue thresholds for control of Venturia inaequalis
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH SUMMARY: An important apple disease world-wide is Venturia inaequalis that causes scab-like lesions on fruit and defoliation of trees. In South Africa, the disease is mainly managed through fungicide sprays that ... -
Phosphite sensitivity of phytophthora cinnamomi and methods for quantifying phosphite from avocado roots
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Phytophthora root rot caused by Phytophthora cinnamomi threatens the production of avocado worldwide, but the disease can be effectively managed using phosphonates. The mode of action of phosphonates is ... -
Fusarium graminearum species complex (FGSC) composition in South African wheat and maize grown in rotation
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Fusarium graminearum is an important pathogen of economically important cereal crops. Recently, the morpho-species has been reclassified as a species complex consisting of 16 phylogenetic species, called ... -
Apple stem grooving virus (ASGV) and apple stem pitting virus (ASPV) : detection and isolate characterization in South African pome fruit
(Stellenbosch : Stellenbosch University, 2015-03)Apple stem grooving virus (ASGV) and Apple stem pitting virus (ASPV) are known to infect pome fruit in all pome fruit producing regions of the world. In this study, a comparison between double-antibody sandwich enzyme ... -
ELISA detection of Apple chlorotic leafspot virus (ACLSV) and Apple mosaic virus (ApMV) in comparison to RT-PCR detection and the determination of genetic variation of these virus species in South Africa
(Stellenbosch : Stellenbosch University, 2014-12)ENGLISH ABSTRACT: Apple chlorotic leaf spot virus (ACLSV) and Apple mosaic virus (ApMV) are responsible for reduced yield in the South African deciduous fruit industry. These two diseases are regulated by the South African ...
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