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Table 4
Productive and qualitative parameters of cv. Merlot at harvest (August 28th, 2018), depending on the treatments.
| Control | Trainer | Stimtide | |
|---|---|---|---|
| Grape yield (Kg/vine) | 4.6 a | 4.7 a | 4.9 a |
| Average cluster wt (g) | 148 a | 146 a | 150 a |
| Bud fertility | 1.4 a | 1.5 a | 1.5 a |
| Average berry wt (g) | 1.2 a | 1.2 a | 1.2 a |
| Soluble solids (° Brix) | 21.4 a | 20.3 a | 20.1 a |
| pH | 3.38 a | 3.29 a | 3.24 a |
| Titratable acidity (g/L) | 6.5 a | 6.4 a | 6.8 a |
| Tartaric acid (g/L) | 10.0 a | 10.1 a | 11.1 a |
| Malic acid (g/L) | 0.5 a | 0.6 a | 0.7 a |
| Anthocyanins (g/L) | 1.18 a | 1.00 a | 1.00 a |
| Polyphenols (g/L) | 2.51 a | 2.32 a | 2.37 a |
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