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Table 2

Effects of irrigation and tillage on total soluble solids (TSS: °Brix), titratable acidity (TA: % tartaric acid), pH, ascorbic acid (AA: mg 100 mL−1 grape juice), total phenols (gallic acid equivalent: GAE 100 g−1 Fwt), anthocyanins (mg cyn-3-glu 100 g−1 Fwt) and tannins (mg 100 mL−1 grape juice)

TSSTApHAAPhenolsAnthocyaninsTannins
No irrigation No tillage 24.07 ± 0.38a 0.635 ± 0.028a 3.11 ± 0.04ab 0.81 ± 0.17a 5.33 ± 0.09b 90.25 ± 1.50a 43.49 ± 8.91b 
Tillage 22.37 ± 0.22b 0.636 ± 0.014a 3.14 ± 0.03ab 1.19 ± 0.32a 5.81 ± 0.09a 81.11 ± 4.49b 33.82 ± 2.16bc 
Irrigation No Tillage 20.50 ± 0.18c 0.646 ± 0.023a 3.05 ± 0.04b 1.02 ± 0.33a 4.09 ± 0.11c 62.01 ± 2.79c 66.04 ± 4.61a 
Tillage 22.85 ± 0.75ab 0.664 ± 0.028a 3.17 ± 0.02a 1.26 ± 0.17a 5.92 ± 0.18a 47.52 ± 0.35d 19.33 ± 3.52c 
TSSTApHAAPhenolsAnthocyaninsTannins
No irrigation No tillage 24.07 ± 0.38a 0.635 ± 0.028a 3.11 ± 0.04ab 0.81 ± 0.17a 5.33 ± 0.09b 90.25 ± 1.50a 43.49 ± 8.91b 
Tillage 22.37 ± 0.22b 0.636 ± 0.014a 3.14 ± 0.03ab 1.19 ± 0.32a 5.81 ± 0.09a 81.11 ± 4.49b 33.82 ± 2.16bc 
Irrigation No Tillage 20.50 ± 0.18c 0.646 ± 0.023a 3.05 ± 0.04b 1.02 ± 0.33a 4.09 ± 0.11c 62.01 ± 2.79c 66.04 ± 4.61a 
Tillage 22.85 ± 0.75ab 0.664 ± 0.028a 3.17 ± 0.02a 1.26 ± 0.17a 5.92 ± 0.18a 47.52 ± 0.35d 19.33 ± 3.52c 

Values (n= 4) in columns followed by the same letter are not significantly different. P ≤ 0.05 according to Duncan's multiple range tests.

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