The following are some of Winetech's protocols, guidelines and overview articles.

Viticulture

  • Die geskiedenis van onderstokke in Suid Afrika/The history of rootstocks in South Africa

  • Astervergeling/Aster Yellows

  • Literature Study on Control of Nematodes in Irrigation Water (March 2006)

  • Beheer van tandpyn by wingerd (2009)

  • Sanitêre beheermaatreëls vir infeksies deur stampatogene in wingerdkwekerye (2010)

  • Plant material quality: A compilation of research results (2004)

    • Nurserymen, grape producers and winemakers have a joint responsibility to ensure that wine of the highest quality is possible and indeed made. Poor callus development, nursery performance and affinity of scions and rootstocks annually result in huge financial losses for both nurserymen and grape producers. The factors leading to poor performance of graft combinations during callusing and in nurseries and vineyards are not well known and are often ascribed as being of morphological, physiological and/or environmental origin. The quality of graft material can be defined as the ability for callusing, root formation, budding and growth during both the callusing period and in the nursery. Research was done to improve callus formation and affinity/growth of graft combinations and to contribute to the improvement of the cultivation of stocks to be delivered to the grape producer. A document is compiled that presents the research results obtained by ARC Infruitec-Nietvoorbij in collaboration with several role players from the SA Wine Industry over a 10 year period. In addition, some general information on important physiological and morphological aspects of plant material is included.

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  • Leafroll / Rolblaar

    • Over the last few years, Winetech has extensively funded research regarding leafroll virus in South Africa.
      From this research we now have an understanding of the virus, how to identify the symptoms, its vectors, how it spreads, but most importantly, how leafroll can be controlled. A formal protocol for managing leafroll infected vines and vineyards as well as how to eradicate the virus was formulated from this research.
      All the information is contained in a series of user-friendly fact sheets compiled by the Institute for Grape and Wine Sciences and is available via the following link: http://igws.co.za/content/fact-sheets/leafroll
      There are a number of winegrowing regions, internationally who have implemented this protocol, and in this way managed to completely eradicate leafroll from their vineyards.
      Grapevine nurseries in South Africa nowadays also adhere to strict protocols to ensure that virus-free planting material can be supplied to the industry.
      Through co-operation from producers, leafroll virus can be effectively controlled and eliminated in South African vineyards, to help promote the longevity of our vineyards and sustainability of our industry.
      The majority of this research was done by Prof Gerhard Pietersen from the Plant Protection Research Institute at the ARC in Pretoria. He can be contacted at the following email address: gerhard.pietersen@up.ac.za

      For further information or questions, please contact Lucinda Heyns at the Institute for Grape and Wine Sciences at leheyns@sun.ac.za

  • Epidemiology and Control of grapevine leafroll disease (2006)
  • Management of Grapevines During Drought Periods / Bestuur van Wingerde Tydens Droogte Toestande

    • A document for the management of grapevines during periods of drought was compiled by the Institute for Grape and Wines Sciences (IGWS) and is a collaboration between various organisations in the South African wine industry.

    • It highlights a few practical guidelines for managing vineyards during drought conditions. Always bear in mind that these are merely guidelines and vineyard practices should be tailored to the specific area, climate, soil type and wine goal.
      These guidelines are available on the IGWS website via the following link:
    • http://igws.co.za/article/guidelines/drought-conditions/management-of-grapevines-during-drought-periods
    • ‘n Dokument vir die bestuur van wingerde tydens droogte toestande is saamgestel deur die Instituut vir Wingerd- en Wynwetenskappe (IWWW) en is voltooi in samewerking met verskeie organisasies binne die Suid-Afrikaanse wyn industrie.

    • Dit bevat praktiese riglyne vir produsente om wingerde te bestuur tydens droogte periodes. Hou altyd in gedagte dat hierdie slegs riglyne bevat en dat wingerdkundige praktyke aangepas moet word vir die spesifieke area, klimaat, grondtipe en wyndoelwit.
      Die riglyne is beskikbaar op die IWWW webblad by die volgende skakel:
    • http://igws.co.za/article/guidelines/drought-conditions/management-of-grapevines-during-drought-periods

  • Rootstock cultivars in South Africa / Onderstokkultivars in Suid-Afrika

    • The use of rootstocks became critical due to the devastating effects of Filloxera on Vitis vinifera roots. Rootstocks that were resistant to this pest were hence used in grafting vines in South Africa since 1872.

      The Institute for Grape and Wine Sciences published a new book in September 2016 about the characteristics of the most important rootstock cultivars in South Africa.
      The book was written by Prof Eben Archer and an electronic version of the book can be accessed through the following link: (Currently only available in Afrikaans)  http://igws.co.za/content/books/rootstocks
    • Die gebruik van onderstokke het sy ontstaan te danke aan die vernietigende invloed van Filloksera op gewone Vitis vinifera wortels (makwortels). Dit het aanleiding gegee tot die gebruik van onderstokke wat teen die pes bestand is en sodoende het die eerste entings in 1872 begin.

      Die Instituut vir Wingerd- en Wynwetenskappe het in September 2016 ? nuwe boek oor die eienskappe van die belangrikste onderstokkultivars in Suid- Afrika publiseer.
      Die boek is geskryf deur Prof Eben Archer en die elektroniese weergawe is beskikbaar by die volgende skakel: http://igws.co.za/content/books/rootstocks

Oenology

General

  • Guidelines for handling, storage and disposal of agrochemicals in the South African wine industry (2009)