Table 1.
Vine ages, training systems and average yields for the study sites. Data were provided by vineyard owners. VSP Vertical shoot positioning
| Site | Shiraz | Cabernet Sauvignon | Chardonnay | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Age (years) | Training | Yield (t/ha) | Age (years) | Training | Yield (t/ha) | Age (years) | Training | Yield (t/ha) | |
| Chapman Valley | 10 | VSP | 5.5–6.0 | 10 | VSP | 4.5–5.0 | –a | – | – |
| Gin Gin | 5 | VSP | 1.0 | 5 | VSP | 1.0 | 5 | VSP | 1.3 |
| Swan Valley | 20 | VSP | n.a.b | – | – | – | 5 | VSP | 3.7–4.0 |
| Peel | 25 | VSP | n.a. | 25 | VSP | n.a. | 25 | VSP | n.a |
| Capel | 20 | T-trellis | 9.5–10.9 | 20 | T-trellis | 8.4–9.0 | 20 | T-Trellis | 7.9–12.6 |
| Wilyabrup | Unknown | VSP | n.a | Unknown | T-trellis | 10.1–12.3 | Unknown | VSP | 5.9–9.0 |
| Rosa Brook | 11 | VSP | 6.4 | 14 | VSP, spur | 3.04 | 11 | VSP | 4.0 |
| Kudardup | – | – | – | 8 | VSP, spur | n.a. | 8 | VSP | n.a. |
| Frankland | 10 | Bi-lateral | 5.7 | 10 | Bi-lateral | 5.7 | 10 | Bi-lateral | 4.5 |
| Pemberton | 11 | VSP | 5.2–9.2 | 17 | VSP | 2.7–6.8 | 18 | VSP, spur | 4.9–6.2 |
aIndicates that the particular variety was not available on that vineyard for sampling
bData not available