## 3 Results and Discussion
### Effect of the Ca, Si and Ca + Si foliar Treatments on Must Volatile Composition
\begin{table}
\begin{tabular}{c c c c c} \hline  & **Control** & **Ca** & **Si** & **Ca + Si** \\ \hline _Benzenoid compounds_ & & & & \\
2-Phenylethanol & 6.68 \(\pm\) 1.23 a & 11.32 \(\pm\) 1.07 b & 14.86 \(\pm\) 2.54 b & 14.84 \(\pm\) 3.53 b \\
2-Phenylethanol & 8.25 \(\pm\) 1.35 a & 18.58 \(\pm\) 4.08 b & 16.69 \(\pm\) 2.10 b & 26.84 \(\pm\) 5.05 c \\ Benzyl alcohol & 2.40 \(\pm\) 0.48 ab & 1.85 \(\pm\) 0.47 a & 2.46 \(\pm\) 0.49 ab & 2.78 \(\pm\) 0.12 b \\ Eugenol & 0.02 \(\pm\) 0.00 a & 0.03 \(\pm\) 0.01 a & 0.04 \(\pm\) 0.01 a & 0.06 \(\pm\) 0.01 b \\ _Total_ & _17.35 \(\pm\) 3.05 a_ & _31.78 \(\pm\) 2.62 b_ & _34.04 \(\pm\) 3.53 b_ & _44.52 \(\pm\) 8.47 c_ \\ \hline _Esters_ & & & & \\ Hexyl acetate & 0.07 \(\pm\) 0.01 ab & 0.06 \(\pm\) 0.01 a & 0.06 \(\pm\) 0.01 a & 0.09 \(\pm\) 0.02 b \\ Methyl salicate & 0.12 \(\pm\) 0.01 b & 0.11\(\pm\) 0.02 b & 0.06 \(\pm\) 0.01 a & 0.33 \(\pm\) 0.02 c \\ _Total_ & _0.20 \(\pm\) 0.02 b_ & _0.18 \(\pm\) 0.01 b_ & _0.12 \(\pm\) 0.01 a_ & _0.42 \(\pm\) 0.01 c_ \\ \hline _Alcohols_ & & & & \\
1-Heptanol & 0.05 \(\pm\) 0.01 a & 0.13 \(\pm\) 0.02 b & 0.18 \(\pm\) 0.02 b & 0.30 \(\pm\) 0.06 c \\
1-Octanol & 0.48 \(\pm\) 0.08 a & 0.76 \(\pm\) 0.12 a & 0.70 \(\pm\) 0.10 a & 1.83 \(\pm\) 0.34 b \\
1-Nonanol & 0.24 \(\pm\) 0.04 a & 0.27 \(\pm\) 0.05 a & 0.51 \(\pm\) 0.09 b & 0.96 \(\pm\) 0.14 c \\
1-Octen-3-ol & 0.80 \(\pm\) 0.08 a & 0.70 \(\pm\) 0.14 a & 0.67 \(\pm\) 0.03 a & 1.19 \(\pm\) 0.12 b \\
2-Ethyl-1-hexanol & 0.89 \(\pm\) 0.15 b & 0.57 \(\pm\) 0.12 a & 0.56 \(\pm\) 0.12 a & 2.38 \(\pm\) 0.11 c \\ _Total_ & _2.46 \(\pm\) 0.34 a_ & _2.44 \(\pm\) 0.24 a_ & _2.62 \(\pm\) 0.12 a_ & _6.66 \(\pm\) 0.42 b_ \\ \hline _Carbonyl compounds_ & & & & \\ Heptanol & 0.06 \(\pm\) 0.00 a & 0.08 \(\pm\) 0.02 a & 0.05 \(\pm\) 0.01 a & 0.11 \(\pm\) 0.02 b \\ Octanal & 0.07 \(\pm\) 0.01 a & 0.08 \(\pm\) 0.01 a & 0.07 \(\pm\) 0.01 a & 0.06 \(\pm\) 0.01 a \\ (E)-2-Octenal & 0.15 \(\pm\) 0.03 a & 0.16 \(\pm\) 0.03 a & 0.14 \(\pm\) 0.01 a & 0.17 \(\pm\) 0.03 a \\ Nonanal & 0.94 \(\pm\) 0.08 a & 1.37 \(\pm\) 0.32 b & 0.79 \(\pm\) 0.14 a & 1.63 \(\pm\) 0.19 b \\ (E)-2-Nonenal & 0.14 \(\pm\) 0.03 a & 0.23 \(\pm\) 0.05 b & 0.12 \(\pm\) 0.02 a & 0.21 \(\pm\) 0.02 b \\ Decanal & 0.22 \(\pm\) 0.04 c & 0.15 \(\pm\) 0.02 b & 0.12 \(\pm\) 0.02 ab & 0.09 \(\pm\) 0.02 a \\ (E,E)-2,4-Hexadienal & 2.83 \(\pm\) 0.17 b & 1.79 \(\pm\) 0.41 a & 1.12 \(\pm\) 0.20 a & 2.86 \(\pm\) 0.55 b \\ (E,E)-2,4-Heptaolenal & 2.29 \(\pm\) 0.42 c & 1.16 \(\pm\) 0.20 b & 0.56 \(\pm\) 0.12 a & 2.57 \(\pm\) 0.34 c \\ (E,E)-2,4-Nononadien & 0.16 \(\pm\) 0.02 b & 0.15 \(\pm\) 0.02 ab & 0.11 \(\pm\) 0.02 a & 0.26 \(\pm\) 0.03 c \\ (E,E)-2,4-Decadienal & 0.04 \(\pm\) 0.01 a & 0.04 \(\pm\) 0.01 a & 0.03 \(\pm\) 0.01 a & 0.06 \(\pm\) 0.01 b \\ \(\gamma\)-Decalactone & 0.31 \(\pm\) 0.06 a & 0.42 \(\pm\) 0.07 ab & 0.43 \(\pm\) 0.10 ab & 0.63 \(\pm\) 0.17 b \\
6-Methyl-3,5-heptadien-2-one & 0.05 \(\pm\) 0.01 b & 0.02 \(\pm\) 0.00 a & 0.03 \(\pm\) 0.00 a & 0.07 \(\pm\) 0.01 c \\ _Total_ & _4.95 \(\pm\) 0.19 b_ & _4.49 \(\pm\) 0.13 b_ & _2.99 \(\pm\) 0.36 a_ & _6.15 \(\pm\) 0.77 c_ \\ \hline _C6 compounds_ & & & & \\ Hexanal & 80.75 \(\pm\) 18.07 a & 100.09 \(\pm\) 17.52 a & 86.51 \(\pm\) 13.31 a & 111.05 \(\pm\) 20.55 a \\ n-Hexanol & 46.85 \(\pm\) 5.20 a & 45.33 \(\pm\) 10.17 a & 66.65 \(\pm\) 2.15 b & 65.55 \(\pm\) 11.66 b \\ (E)-2-Hexenal & 36.31 \(\pm\) 7.23 a & 43.23 \(\pm\) 4.70 a & 35.66 \(\pm\) 6.12 a & 46.02 \(\pm\) 9.12 a \\ (Z)-3-Hexen-1-ol+(E)-2-Hexen-1-ol & 2.95 \(\pm\) 0.57 ab & 2.09 \(\pm\) 0.39 a & 1.95 \(\pm\) 0.40 a & 3.01 \(\pm\) 0.69 b \\ _Total_ & _16.86 \(\pm\) 22.47 a_ & _190.74 \(\pm\) 2.28 eV_ & _190.78 \(\pm\) 19.23 ab_ & _225.63 \(\pm\) 41.71 b_ \\ \hline \end{tabular}
\end{table} 
Table 2: Benzenoid compounds, esters, alcohols, carbonyl compounds and C6 compounds concentrations (\(\mu\)g/L) in musts from control and Ca, Si and Ca + Si foliar treatments.