Bepaling van die bydrae van grondwaterstatus en geselekteerde atmosferiese parameters op waterspanning in wingerd

Project Number
WW 13-14

Project title
Bepaling van die bydrae van grondwaterstatus en geselekteerde atmosferiese parameters op waterspanning in wingerd

Project leader
Myburgh, P A

Project description
Due to excessive water stress in grapevines, some localities are not suitable for all cultivars. Since soil water content per se does provide an indication of the energy required to absorb water from the soil, it would be more realistic to relate water stress to soil water matric potential. Knowledge on actual soil water matric potentials in non-irrigated vineyards, particularly during ripening, is limited. The purpose of this project is to determine (i) what the extent of soil water depletion over the season would amount to in terms soil matric potential, (ii) what the relationship is between plant water stress and the combined effect of soil and atmospheric conditions and (iii) what the maximum water stress would be in grapevines at a specific locality as predicted at the hand of soil and atmospheric parameters.

Presentation(s)
Bruwer, R J. 2008. Effect of climate, soil type and irrigation on Cabernet Sauvignon yield and wine quality in the Lower Orange River region. Winetech VinPro Information Days at Robertson, Rawsonville, Stellenbosch, Paarl and Vredendal, 16,17,18 & 23 September.

Bruwer, R J, Myburgh, P and Carey, V A. 2008. Effects of soil water status and atmosferic conditions on yield and wine quality of Vitis vinifera L. cv. Cabernet Sauvignon in the Lower Olifants River region. Paper. 29th National Congress of the South African Society for Enology and Viticulture, Somerset West, South Africa, 14-17 November

Myburgh, P A and Bruwer, R J. 2009. Effect of soil type on Cabernet Sauvignon growth, yield and wine quality in the Lower Olifants River region. Paper. Soil Science Society of South Africa Conference, Stellenbosch, South Africa, 21 January,

Article
Marais, J. 1996. Sauvignon blanc: metoksipirasiene en mikroklimaat, Wynboer, Mnth Mar (p. T7-8)

Myburgh, P A, Cornelissen, M, Southey, T. 2016. Interpretasie van stamwaterpotensiaal-metings, WineLand, Mnth June (p. 78-80)
Article.pdf

FinalReport.pdf

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