Browsing Masters Degrees (Plant Pathology) by Title
Now showing items 19-38 of 71
-
The ecology of Botrytis cinerea on grape in the Western Cape Province
(Stellenbosch : Stellenbosch University, 2004-03)ENGLISH ABSTRACT: Botrytis cinerea Pers.: Fr., a pathogen of grapevine (Vitis vinifera L.), moves mainly through conidia by air currents in vineyards which are deposited intermittently on the surfaces of leaves, ... -
The effect of garlic extracts on the control of postharvest pathogens and postharvest decay of apples
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Apples are an important export commodity for the South African market, and postharvest losses that occur as a result of decay due to infection with pathogenic fungi such as Botrytis cinerea Pers., ... -
The effect of haloxyfop-R-methyl ester and imazamox herbicides, tine or no tillage and nine different medic cultivars on the seed and dry matter production as well as the quality of medic pastures
(Stellenbosch : Stellenbosch University, 2001-12)ENGLISH ABSTRACT: The aim of this study was to determine the effect of a grass herbicide, a broadleaf herbicide with some grass control capabilities, method of tillage (tine and no-tillage) at planting of wheat as well ... -
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 ... -
Epidemiology and control of Pseudocercospora angolensis fruit and leaf spot disease on citrus in Zimbabwe
(Stellenbosch : Stellenbosch University, 2005-12)ENGLISH ABSTRACT: Fruit and Leaf Spot Disease (FLSD) of citrus, caused by Phaeoramularia angolensis, is found only in 18 countries in Africa, the Comores Islands in the Indian Ocean and Yemen in the Arabian peninsula. ... -
Etiology and management of Neofabraea lenticel decay (bull’s eye rot) of apples in the Western Cape of South Africa
(Stellenbosch : Stellenbosch University, 2019-12)ENGLISH ABSTRACT: Postharvest lenticel decay of apple and pear fruit caused by Neofabraea malicorticis, N.perennans. N. vagabunda and N. kienholzii is a disease more commonly known as Bull’seye rot. In South Africa, only ... -
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 ... -
The expression of yeast antifungal genes in tobacco as possible pathogenesis-related proteins
(Stellenbosch : Stellenbosch University, 2003-12)ENGLISH ABSTRACT: The resistance of plants to infection by phytopathogenic microorganisms is the result of multiple defence reactions comprising both constitutive and inducible barriers. While disease is the exception, ... -
Fungicide resistance and control of citrus green mould
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Please refer to full text for abstract -
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 ... -
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 ... -
Genetic characterization and fungicide resistance profiles of Botrytis cinerea in rooibos nurseries and pear orchards in the Western Cape of South Africa
(Stellenbosch : Stellenbosch University, 2012-03)ENGLISH ABSTRACT: Botrytis cinerea Pers. Fr. [teleomorph Botryotinia fuckeliana (de Bary) Whetzel] causes serious losses of over 200 crops worldwide, including rooibos seedlings and pears. This pathogen is characterized ... -
Genetic diversity in Plasmopara viticola in South Africa
(Stellenbosch : Stellenbosch University, 2007-03)ENGLISH ABSTRACT: Downy mildew, caused by the obligate pathogen Plasmopara viticola, is a very destructive grapevine disease. The asexual phase (sporangia) of the pathogen has long been viewed as the life cycle stage ... -
Identification of differentially expressed mRNA species in Vitis vinifera in reaction to infection by Uncinula necator
(Stellenbosch : Stellenbosch University, 1999-12)ENGLISH SUMMARY: Powdery mildew is one of the most important grapevine diseases and is a problem in all the grapevine producing areas. Losses caused by uncontrolled powdery mildew force producers to follow extensive ... -
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 ... -
Incidence and epidemiology of apple core rot in the Western Cape of South Africa
(Stellenbosch : Stellenbosch University, 2012-12)ENGLISH ABSTRACT: This study looked at the incidence, etiology and epidemiology of core rot of apples in orchards situated in the Western Cape, South Africa. Core rot is a post-harvest disease, with three symptoms, namely ... -
Infection by dry, airborne Botrytis cinerea conidia and fungicide efficacy on different parts of grape bunches and vinelets
(Stellenbosch : Stellenbosch University, 2002-03)ENGLISH ABSTRACT: The evaluation of fungicide efficacy in commercial vineyards can be influenced by the sporadic occurrence of Botrytis cinerea at various positions on vines, differences in bunch structure during bunch ... -
Infection pathways of Botrytis cinerea on selected wine grape cultivars
(Stellenbosch : Stellenbosch University, 2002-12)ENGLISH ABSTRACT: An understanding of the infection pathways of Botrytis cinerea in grape bunches will help to combat this devastating pathogen of grape. Many studies have been done to determine the possible infection ... -
The influence of chemical seed treatment on germination, seedling survival and yield of canola
(Stellenbosch : Stellenbosch University, 2004-12)ENGLISH ABSTRACT: The influence of chemical seed treatments on the germination, seedling survival and yield of canola (cv. Varola 44) was investigated in a series of incubation studies, glasshouse experiments, as well ... -
The influence of light intensity, light quality and root zone temperature on patato minituber production
(Stellenbosch : Stellenbosch University, 2007-12)ENGLISH ABSTRACT: In South Africa the production of minitubers, as starting material for seed potato production, is achieved by transplanting in vitro plantlets to a hydroponic growth medium in the greenhouse, but current ...
