The J vineyards are farmed with nine different types of rootstock. They are matched to specific soil types and depths to achieve balanced growth and control the vigor of the vine. The diversity of locations, soils, trellises, rootstocks and clones gives the winemaking team a tremendous range of flavor profiles to work with in crafting the different wines.

Benefits
The main benefits that rootstocks can provide in addition to phylloxera tolerance are:

• Nematode resistance
• Soil salinity (salt) tolerance
• Water use efficiency/drought tolerance
• Increase set
• Increases or decreases in scion vigour
• Advancing fruit maturity
• Lime tolerance
• Soil acidity tolerance

Considerations
There are around 20 varieties of rootstock for wine grapes commonly available. However, there is no single rootstock that can meet the different challenges of every site. Each rootstock has its own particular set of characteristics, strengths and weaknesses.

Rootstocks used at J:
AXR1
5 BB
5C
101-14
420 A
3309
SO4
4453
039-16