Technical Report


Evaluation of varieties, clones, and rootstocks: I. Evaluation of phylloxera-resistant rootstocks for the cultivars Pinot noir, Chardonnay, Pinot gris and Merlot : 1998-1999 Public Deposited

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  • With new vineyard planting and the replanting of older vineyards on phylloxera-resistant rootstock on the rise, grape growers are looking for rootstocks that are good fits for a particular site and management style. Making an informed decision on rootstocks before planting can help create a vineyard that will be manageable and profitable. Factors such as vigor, sunlight use efficiency and water transpiration can be useful in evaluating which rootstock might be appropriate for a site with certain limitations or abundance. Side-by-side analysis of rootstocks can help in determining which rootstock has desirable or undesirable traits for a chosen need. The new rootstock experimental block at the Woodhall III vineyard was planted in the summer of 1997 and includes a trial of Pinot noir (clone FPMS 2A) grafted on nineteen rootstocks plus an own- rooted control. Another trial consisting of Pinot noir (clone FPMS 2A), Chardonnay (clone Dijon 95), Merlot (clone FPMS 3) and Pinot gris (clone Colmar 146) was planted, all four varieties grafted onto nine rootstocks and an ownrooted control. This report summarizes the analysis of the physiological growth responses during the 1998 growing season.
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