Browsing Research Articles (Plant Pathology) by Title
Now showing items 13-32 of 43
-
Epidemiology of botrytis cinerea on grape : wound infection by dry, airborne conidia
(South African Society for Enology and Viticulture, 2002)This study describes the infection of fresh wounds on berries exposed to freshly deposited airborne Botrytis cinerea conidia, and on berries carrying previously deposited conidia and germlings (latent infections). Grapes ... -
The essential symbiosis of mycology and plant pathology : present and future needs
(Academy of Science of South Africa, 1995)Correct disease diagnosis is essential for plant pathologists striving to combat plant disease. To support them, mycologists are integrating traditional and molecular techniques. Attention must therefore be given to ... -
First report of Phyllosticta citricarpa and description of two new species, P. paracapitalensis and P. paracitricarpa, from citrus in Europe
(Elsevier, 2017)The genus Phyllosticta occurs worldwide, and contains numerous plant pathogenic, endophytic and saprobic species. Phyllosticta citricarpa is the causal agent of Citrus Black Spot disease (CBS), affecting fruits and leaves ... -
Fitness on grape berries of botrytis cinerea isolates belonging to different dicarboximide sensitivity classes
(South African Society for Enology and Viticulture, 2003)Seasonal fluctuations in the frequency of dicarboximide-resistant Botrytis cinerea isolates in Western Cape vineyards suggest a reduced fitness of these isolates. In this study fitness of sensitive, ultra-low-level and ... -
Frequency of dicarboximide resistant strains of botrytis cinerea in South African table grape vineyards and influence of spray schedules on resistant sub-populations
(South African Society for Enology and Viticulture, 1998)Between 1993 and 1995, 1139 isolates of Botrytis cinerea were collected from table grape vineyards in the Western and Northern Cape provinces and tested for sensitivity to dicarboximides (vinclozolin) and benzimidazoles ... -
Fungicide efficacy against botrytis cinerea at different positions on grape shoots
(South African Society for Enology and Viticulture, 2003)Fungicide efficacy at different positions on grape shoots was determined on vinelets inoculated with Botrytis cinerea. To ensure proper fungicide coverage, vinelets (table grape cultivar Dauphine, wine grape cultivar Merlot ... -
Fungicide sensitivity of phaeomoniella chlamydospora, the causal organism of petri grapevine decline
(South African Society for Enology and Viticulture, 2000)Twelve fungicides, benomyl, chlorothalonil, fenarimol, fosetyl-Al, iprodione, kresoxim-methyl, mancozeb, metalaxyl, prochloraz manganese chloride, quintozene, tebuconazole and thiram were screened in vitro for their ability ... -
Fusarium spp. and levels of fumonisins in maize produced by subsistence farmers in South Africa
(Academy of Science of South Africa, 2011)Fusarium spp. produce fumonisins – mycotoxins that are of importance to maize production in South Africa. Fumonisins have been associated with human oesophageal cancer and cause various diseases in animals that are of ... -
High diversity of Diaporthe species associated with dieback diseases in China, with twelve new species described
(Pensoft Publishers, 2018-09-17)Diaporthe species have often been reported as important plant pathogens, saprobes and endophytes on a wide range of plant hosts. Although several Diaporthe species have been recorded in China, little is known about species ... -
Hymenochaetales associated with esca-related wood rots on grapevine with a special emphasis on the status of esca in South African vineyards
(Firenze University Press, 2015)Esca disease is a problem on grapevines worldwide. This disease complex is characterised by several external and internal symptoms including foliar tiger-stripe chlorosis and necrosis, dieback, wood necrosis and white rot. ... -
In vitro screening of fungicides against phomopsis viticola and diaporthe perjuncta
(South African Society for Enology and Viticulture, 2000)Phomopsis viticola is the cause of Phomopsis cane and leaf spot disease of grapevines, while Diaporthe perjuncta is associated with bud mortality. The efficacy of nine fungicides (azoxystrobin, flusilazole, folpet, fosetyl-Al ... -
In-vitro effects of garlic extracts on pathogenic fungi Botrytis cinerea, Penicillium expansum and Neofabraea alba
(Academy of Science of South Africa, 2015)The antifungal activity of garlic extracts applied directly and through volatile release was tested against the growth of postharvest pathogens Botrytis cinerea, Penicillium expansum and Neofabraea alba. Mycelial growth ... -
Incomplete cross-resistance to folpet and iprodione in botrytis cinerea from grapevine in South Africa
(South African Society for Enology and Viticulture, 2001)The sensitivity to folpet of Botrytis cinerea isolates obtained from table grape vineyards in the Western Cape province of South Africa with a known history of dicarboximide (DC) resistance and high-schedule DC and folpet ... -
Infection of table grape bunches by alternaria alternata
(South African Society for Enology and Viticulture, 1995)Infection of table grape bunches by Alternaria alternaJa was investigated by light, fluorescence and scanning electron microscopy. Conidia in 20-μ1 drops of spore suspension germinated readily on the fruit surface and ... -
An integrated strategy for the proactive management of grapevine trunk disease pathogen infections in grapevine nurseries
(South African Society for Enology and Viticulture, 2016)The aim of this study was to compare 11 treatment regimes (TR) in grapevine nurseries in order to eradicate trunk pathogens. Grapevine propagation material was subjected to treatments before cold storage, before and after ... -
Liberomyces pistaciae sp. nov., the causal agent of pistachio cankers and decline in Italy
(Pensoft Publishers, 2018)A new canker and decline disease of pistachio (Pistacia vera) is described from Sicily (Italy). Observations of the disease and sampling of the causal agent started in spring 2010, in the area where this crop is typically ... -
Morphological and molecular identification of fungi associated with South African apple core rot
(Springer, 2018)Core rot is a major contributor to postharvest losses in apples worldwide. Pathogens most commonly associated with the disease are Alternaria spp. and Penicillium spp. Although both genera show specific morphological ... -
Mycotoxigenic Fusarium species associated with grain crops in South Africa – a review
(Academy of Science of South Africa, 2017)Cereal grains include some of the most important crops grown in South Africa and play a major role in the local economy. Maize, wheat and sorghum are extensively consumed by humans and farm animals, and are also utilised ... -
Occurrence fungi causing black foot on young grapevines and nursery rootstock plants in Italy
(Firenze University Press, 2017)Young grapevine plants with decline and wood necrosis symptoms were collected from vineyards and nurseries in the Apulia and Molise regions, Italy, from 2013 to 2015. Isolations of fungi were prepared from 45 diseased ... -
Occurrence of fruit-decaying fungi on adult male Mediterranean fruit flies (ceratitis capitata) captured in orchards and adjacent vineyards
(South African Journal of Enology & Viticulture, 2004)The occurrence of adult male Ceratitis fruit flies and their potential to transmit fungi associated with pre- and postharvest decay of fruit in natura were investigated. Sensus fruit-fly traps were installed in orchards ...
