Table 1.
Physicochemical parameters of grape berries from the different treatment groups.
| Parameter | RDI-1 | RDI-2 | RDI-3 | Control | ||||
|---|---|---|---|---|---|---|---|---|
| R | 2015 | 2016 | 2015 | 2016 | 2015 | 2016 | 2015 | 2016 |
| Yield (ton/ha) | 7.12b | 7.70b | 7.77ab | 7.94b | 8.36a | 8.58ab | 9.06a | 9.57a |
| Weight (g/100 berries) | 110.14b | 118.18b | 105.01c | 110.10c | 118.38a | 124.81a | 122.50a | 122.70a |
| Total soluble solids (Brix) | 23.92a | 23.45a | 23.53ab | 23.95a | 23.56ab | 23.31a | 22.30b | 23.26a |
| Titratable acidity (g/L tartaric acid) | 4.42b | 3.25b | 4.81ab | 3.14b | 5.12ab | 3.51a | 5.46a | 3.71a |
| pH | 3.90a | 4.13b | 3.72b | 4.31a | 3.69c | 3.92c | 3.67c | 3.86c |
| Midday stem water potential from fruit set to harvest (MPa) | −0.56 | −0.58 | −0.49 | −0.52 | −0.38 | −0.43 | −0.30 | −0.34 |
Different letters in the row indicate significant differences (p < 0.05) among treatments for the same vintage.