Table 4.
Content of total soluble solids (°Brix) and pH of in the season 2019–2020 and 2020–2021.
| Year 2020 | Year 2021 | |||||||
|---|---|---|---|---|---|---|---|---|
| Treatment | TSS (°Brix) | pH | TSS (°Brix) | pH | ||||
| +T | 25.78 | b | 3.81 | b | 23.87 | b | 3.61 | b |
| −T | 24.28 | a | 3.62 | a | 23.29 | a | 3.49 | a |
| p-value | <0.0001 | *** | 0.000 | *** | <0.0001 | *** | 0.030 | ** |
| Cultivar | ||||||||
| Malbec | 24.68 | b | 3.73 | 24.30 | a | 3.63 | ||
| Syrah | 27.80 | a | 3.70 | 25.83 | b | 3.47 | ||
| Bonarda | 22.60 | c | 3.72 | 20.47 | c | 3.54 | ||
| p-value | <0.0001 | *** | 0.746 | NS | <0.0001 | *** | 0.059 | NS |
| Treatment × Cultivar | ||||||||
| +T × Malbec | 25.27 | 3.82 | 24.67 | 3.66 | ||||
| −T × Malbec | 24.10 | 3.64 | 23.93 | 3.59 | ||||
| +T × Syrah | 28.40 | 3.81 | 26.07 | 3.59 | ||||
| −T × Syrah | 27.20 | 3.59 | 25.6 | 3.35 | ||||
| +T × Bonarda | 23.67 | 3.82 | 20.07 | 3.53 | ||||
| −T × Bonarda | 21.53 | 3.63 | 20.87 | 3.56 | ||||
| p-value | 0.200 | NS | 0.877 | NS | 0.612 | NS | 0.200 | NS |
Values are expressed as average (n = 3). Different letters within the same column indicate significant differences among Treatment (+T, −T), Cultivar (Malbec, Syrah and Bonarda) and Treatment × Cultivar interaction. Tukey test p ≤ 0.01 (**), p ≤ 0.001 (***), and NS indicates not significant.