by Kobus Hunter, A. Carlomagno, Neels Volschenk, A. Ferrandino, C. Lovisolo, A. Genre & V. Novello | 1 Dec, 2018 | Viticulture research, Winetech Technical
Dehydration/shrinking of grape berries during late ripening is a common disorder of grapevine cultivars and has deleterious implications for yields and grape quality. The cultivar Shiraz is particularly sensitive to this disorder and often displays large variation in...
by Johan Fourie, Charles Ochse & Karen Freitag | 1 Nov, 2018 | Viticulture research, Winetech Technical
The aim of this study was to compare the performance of triticale established in the work row of a drip irrigated vineyard with that of triticale established in a micro-sprinkler irrigated vineyard in which the work row could be wetted. Introduction Triticale...
by Kobus Hunter, Neels Volschenk & Roberto Zorer | Viticulture research, Winetech Technical
Terroir factors, such as soil and climate, together with cultivation practices, have layered and integrated effects on growth, yield, grape and wine quality, and cost efficiency. Introduction Wrong choices and execution of viticulture practices may lead to or...
by Kobus Hunter, Neels Volschenk & Roberto Zorer | Viticulture research, Winetech Technical
Canopy physiological changes of differently orientated vertically trellised Shiraz grapevines (NS, EW, NE-SW and NW-SE rows) were investigated. Introduction Within a specific terroir, the effect of grapevine row orientation on the functioning of both leaves and...
by Kobus Hunter, Neels Volschenk & Roberto Zorer | 1 Oct, 2018 | Viticulture research, Winetech Technical
The prevailing wind direction and wind velocity are always considered when vineyards are established in a specific terroir. Introduction Establishment is often forced towards geo-morphologically complex terroirs where climatic conditions are affected by aspect,...
by Johan Fourie | Viticulture research, Winetech Technical
Cover crop management is widely applied in the vineyards of South Africa. Introduction The cover crops are grown during winter and controlled chemically any time from the end of August (end of winter) in non-irrigated bush vines, to early October (spring) in...
by Koos Bouwer | Viticulture research, Winetech Technical
Previous Confronting Climate Change industry trend reports have indicated that electricity consumption for the pumping of water is the largest source of farm-level carbon emissions. Irrigation of crops is a necessity in a water-scarce country and predominantly...
by Lorren de Kock | 1 Sep, 2018 | Oenology research, Viticulture research, Winetech Technical
In South Africa and globally there is increasing pressure from retailers and consumers for the disclosure of carbon emissions of the products that they purchase. Introduction It is important for South African fruit and wine producers to comply with the market...
by Kobus Hunter, Neels Volschenk & Roberto Zorer | Viticulture research, Winetech Technical
Climatic conditions, such as temperature, wind and humidity, and valley floor/edaphic conditions, such as soil water availability and drainage, often force the establishment of vineyards towards complex terroirs where aspect, slope, relief, erosion and execution of...
by Boredi Silas Chidi, Zovuyo Notshokovu, Mpho Mafata & Francois van Jaarsveld | Viticulture research, Winetech Technical
Maintaining the chemical composition of a wine is essential for the wine industry. Although the sugar-acid balance of a wine is of primary sensory importance, individual acids and oenological variables are equally important. Introduction Méthode Cap Classique...
by Roberto Zorer, Neels Volschenk & Kobus Hunter | Viticulture research, Winetech Technical
Several web-tools, available from the Photovoltaic Geographical Information System (PVGIS) online service, are freely available for use in viticulture. The Photovoltaic Geographical Information System (PVGIS ©European Communities, 2001 – 2017) was developed from...
by Kwaku Achiano | 1 Aug, 2018 | Viticulture research, Winetech Technical
The aim of this study was to establish whether the yellow delta trap used for monitoring male mealybug numbers can also effectively be used to monitor mealybug parasitoids. Farmers use yellow delta traps (Figure 1a) to monitor male vine mealybugs (Planococcus ficus)...
