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Current SA rootstock research trialsCurrent SA rootstock research trials
Project title: Monitoring the performance of rootstocks in different grape growing regions of SATimeframe: 2004 - 2009 Project aims:
Methodology: The collection of performance data from established, commercially grown blocks comprising in each case a single scion grafted to a range of different rootstocks, all planted at the same time and in the same location. There are sites in all the major grapegrowing regions of SA that have been monitored as part of this project. Variables assessed:
Results to date have informed the recommendations provided in the PGIBSA publication: Grapevine Rootstocks.
Project title: The effect of water stress on the reproductive performance of grafted vinesTimeframe: 2008 - 2012 Project aims:
Overview: This research consists of prolonged deficit irrigation on six rootstock blocks and one own-rooted block to examine the effects of water stress on reproductive development and wine quality in grafted vines. Rootstocks being compared are:
Methodology: Shiraz Clone BVRC30 grafted to each of the rootstocks listed below, as well as its own roots, will be assessed for their ability to maintain growth and produce a crop when subjected to a zero irrigation regimen. The vines were planted in 2003 at the SARDI research station in the Barossa Valley, which has an average annual rainfall of 500mm. Treated vines will be deprived of any irrigation while control vines will receive irrigation as the vines require and typically totalling to 0.5ML per hectare annually. Variables assessed:
Preliminary conclusions: The reportedly drought-intolerant rootstock Schwarzmann did not maintain yield and vine growth when compared with the V berlandieri x V. rupestris hybrid rootstocks (with the exception of 140 Ruggeri). The level of drought tolerance of rootstocks is not necessarily correlated with rootstock parentage. Other information: This project is a collaboration between:
Project title: Rootstocks and root knot nematode (RKN) studyTimeframe: 2009 - 2011 Project aims:
Overview: 1103 Paulsen has been widely recommended as a rootstock in many SA regions because of its excellent drought and salt tolerance. It has recently become apparent that 1103 Paulsen is under-performing and showing signs of poor health and decline in McLaren Vale and the Riverland on sites where very high levels of RKN have been found. The RKN is the suspected cause of the problem. It is not known whether the problem is specific to 1103 Paulsen, or whether all rootstocks would be similarly affected in the same situation. Rootstocks being compared are:
Methodology: Greenhouse evaluation (potted vines) of the resistance of the above rootstocks in naturally infested vineyard soils taken from the Riverland. Variables assessed:
Other information: This project is a collaboration between:
Download more detailed project overview
Project title: Assessing the performance of Boerner rootstock in South Australian conditionsTimeframe: 2006 - 2016 Project aims:
Overview: Previous work with Boerner in Germany has indicated that it fails to develop any galls when exposed to phylloxera, and phylloxera populations fail to establish on its roots. This makes it a potentially very useful rootstock in Australia, where it could effectively eradicate phylloxera from an infested region over time. However, its viticultural performance needs to be assessed in Australian conditions to determine its suitability as a rootstock for growers' requirements. Methodology: Replicated trials have been planted on two sites: one in the Adelaide Hills and one in Clare, using the most important variety for the region (Chardonnay and Riesling respectively). The trial sites were planted in 2006. Data collection will commence in 2009-10. Rootstocks being compared are: Site 1: Clare (scion: Riesling)
Variables assessed:
Other information: This project is a collaboration between:
Project title: A preliminary exploration of rootstock influence on grapevine phenologyTimeframe: 2007 - 2009 Project aims:
Methodology: The trial is being conducted at the University of Adelaide, Waite Campus. Field vines planted in 1991 of each treatment (see below) are maintained with nutrients as required and sprayed regularly for pest and disease control. Vines will be watered as required throughout the season. Rootstocks assessed: Shiraz grafted to:
Variables assessed:
Other information: A comprehensive literature review was completed by the Project Manager prior to the commencement of this study. Download literature review. Note that this is not a published or peer reviewed paper but a component of the study. Caution should be taken in interpreting the information.
Project title: Regional rootstock trialsTimeframe: 2004 - ongoing Project aims:
Methodology: The collection of performance data from newly planted trial blocks comprising either a single scion or a variety of scion clones grafted to a range of different rootstocks, all planted at the same time and in the same location. There are sites in various regions of SA that have been planted as part of this project. Currently the sites being actively assessed are:
Data collection will commence when the vines are three years old. Variables assessed:
Other information: This project is in collaboration with local wine industry, grape grower and vine improvement groups including:
Project title: Effects of rootstock on fruitset in WrattonbullyTimeframe: 2008 - 2012 Project aims: To examine reproductive performance, flowering and fruitset in grafted vines of traditionally poor setting varieties: Cabernet Sauvignon and Merlot, grown in a cool climate (Wrattonbully) Overview: This research will aim to explore whether rootstocks influence fruitset on traditionally poorer setting varieties Merlot and Cabernet Sauvignon grown on a commercial vineyard in Wrattonbully. All rootstocks will be managed consistently throughout the trial with identical nutrient and water supply as well as a constant spray regime for pests and diseases Rootstocks being compared are:
Methodology: The site was planted in 2002. It has an average annual rainfall of 561mm. The timing of fruitset will be recorded for each trial vine, as well as a comprehensive range of other measures related to growth and productivity (see below). Variables assessed:
Other information: This project is a collaboration between:
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