Tabla 4
Concentración de sólidos solubles totales S.S.T. (ºbrix), pH, Acidez titulable (g ac. tartárico/L), Ácido tartárico (g/L), Ácido málico (g/L), Concentración de Potasio (ppm) e Índice de polifenoles totales (I.P.T.) de los tratamientos (Trat.): R0, R1, R2 y R3. Significación estadística (Sig.): -, no significativo; *, p<0,1; **, p<0,05 05 (letras distintas indican diferencia significativa entre tratamientos).
| Trat. | S.S.T. | pH | Acidez titulable | Ácido tartárico | Ácido málico | Potasio | I.P.T. | |
|---|---|---|---|---|---|---|---|---|
| 2015 | R0 | 25,3 | 3,72 | 3,12 c | 5,42 | 1,25 b | 1735 | 15 |
| R1 | 25,7 | 3,78 | 3,35 bc | 5,40 | 1,31 b | 1695 | 16 | |
| R2 | 24,5 | 3,82 | 3,72 ab | 5,22 | 1,50 ab | 1583 | 15 | |
| R3 | 25,2 | 3,67 | 3,99 a | 5,21 | 1,70 a | 1665 | 16 | |
| Sig. | ̵ | ̵ | ** | ̵ | ** | ̵ | ̵ | |
| 2016 | R0 | 24,3 | 3,58 | 4,48 b | 6,72 b | 1,46 c | 1635 c | 11 |
| R1 | 24,5 | 3,57 | 4,84 b | 7,86 a | 1,67 bc | 1823 b | 11 | |
| R2 | 23,9 | 3,54 | 4,89 b | 7,22 b | 1,73 ab | 1868 ab | 11 | |
| R3 | 24,2 | 3,52 | 5,41 a | 8,28 a | 1,95 a | 2003 a | 12 | |
| Sig. | ̵ | ̵ | ** | ** | ** | ** | ̵ | |
| 2017 | R0 | 26,2 a | 3,85 a | 3,47 c | 6,36 c | 1,21 b | 1813 | 13 |
| R1 | 26,4 a | 3,74 b | 4,12 b | 7,14 b | 1,24 b | 1830 | 11 | |
| R2 | 25,1 b | 3,71 b | 4,26 b | 7,14 b | 1,32 b | 1810 | 11 | |
| R3 | 25,2 b | 3,67 b | 4,69 a | 7,81 a | 1,55 a | 1935 | 11 | |
| Sig. | ** | ** | ** | ** | * | ̵ | ̵ | |
| 2018 | R0 | 24,3 a | 3,54 | 4,80 | 5,81 | 2,04 | 1423 | 10 |
| R1 | 23,5 b | 3,50 | 4,79 | 6,15 | 2,06 | 1445 | 10 | |
| R2 | 23,7 b | 3,47 | 5,28 | 6,37 | 2,19 | 1485 | 10 | |
| R3 | 23,5 b | 3,47 | 5,04 | 6,40 | 2,09 | 1483 | 10 | |
| Sig. | ** | ̵ | ̵ | ̵ | ̵ | ̵ | ̵ | |
| Media (2015-2017) | R0 | 25,3 | 3,72 | 3,69 | 6,17 | 1,31 | 1728 | 13 |
| R1 | 25,5 | 3,70 | 4,10 | 6,80 | 1,41 | 1783 | 13 | |
| R2 | 24,5 | 3,69 | 4,29 | 6,53 | 1,52 | 1754 | 12 | |
| R3 | 24,9 | 3,62 | 4,70 | 7,10 | 1,73 | 1868 | 13 |
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