Effects of Rootstock on Grapevine Performance, Petiole and Must Composition, and Overall Wine Score of Vitis vinifera cv. Chardonnay and Pinot noir

  • J. Wooldridge ARC Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa
  • P.J.E. Louw Sapex Exports (Pty) Ltd, P.O. Box 1000, Stellenbosch 7599, South Africa
  • W.J. Conradie ARC Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa
DOI: https://doi.org/10.21548/31-1-1399

Abstract

Characteristics of Chardonnay and Pinot noir vines on Richter 99 (99R), Richter 110 (110R), Ruggeri 140 (140Ru)
and SO4 rootstocks were assessed over six consecutive seasons in a factorial field trial on an Avalon soil in Stellenbosch
that had been limed to pH 5.75 (1M KCl). Ruggeri 140 promoted the highest cane mass (vigour), highest petiole
and must nitrogen (N), lowest ratio of yield to cane mass, and lowest overall wine quality. The lowest cane mass and
highest wine quality were produced by vines on 110R. Petiole N, phosphorus (P), calcium (Ca) and magnesium (Mg),
and must N and Ca, were also lower for vines on 110R than for those on 140Ru.

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Published
2016-12-09
Issue
Vol. 31 No. 1 (2010)
Section
Articles

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