## 3 Results
### Year 2021 Optimization of the Irrigation Water Volume for Each Clone
#### 3.2.3 Vegetative Development and Yield Response
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & & & & & & & & \\ \hline
**Clone** & **K** & **Ca** & **Mg** & **P** & **B** & **Cu** & **Mn** & **Zn** \\ \hline
4 & 1951c & 69.4b & 90.9 bc & 83.1 ab & 10.6a & 0.286 & 0.84b & 0.212 ab \\
94 & 1604a & 58.6a & 85.7 ab & 75.7a & 10.0a & 0.257 & 0.77 ab & 0.193a \\
188 & 1744 ab & 66.3 ab & 87.6 ab & 80.3 ab & 10.3a & 0.264 & 0.65a & 0.177a \\
276 & 1791 bc & 64.9 ab & 83.4a & 111.4c & 10.3a & 0.278 & 0.86b & 0.222 ab \\
360 & 2325d & 83.1c & 96.4c & 112.6c & 13.8b & 0.318 & 1.17c & 0.246c \\
372 & 1744 ab & 64.1 ab & 87.3 ab & 92.0b & 10.5a & 0.256 & 1.09c & 0.211 ab \\
373 & 1823 bc & 62.8 ab & 84.3a & 93.9b & 10.4a & 0.243 & 0.83b & 0.182a \\
**Treat.** & & & & & & & & \\ Control & 1889 & 65.7 & 88.4 & 88.2 & 9.9 & 0.289 & 0.89 & 0.197 \\
**Stress** & 1821 & 68.4 & 87.5 & 97.3 & 11.8 & 0.255 & 0.89 & 0.216 \\
**Clone \(\times\) Treat.** & & & & & & & & \\
4 & Control & 1938 de & 71.8 de & 93.2 cd & 76.1 ab & 8.7a & 0.277 bc & 0.97 de & 0.217 bc \\  & Stress & 1965e & 66.9 cd & 88.5 abc & 90.0 bcd & 12.5d & 0.295 bc & 0.72 abc & 0.208 abc \\
94 & Control & 1707 abcde & 62.7 abcd & 90.2 abc & 87.5 bc & 9.7 ab & 0.268 bc & 0.87 bcde & 0.182 ab \\  & Stress & 1500a & 54.4a & 81.3a & 64.0a & 10.2 bc & 0.247 abc & 0.67 ab & 0.204 abc \\
188 & Control & 1922 de & 64.3 abcd & 86.6 abc & 83.9 bc & 9.5 ab & 0.291 bc & 0.73 abc & 0.184 ab \\  & Stress & 1566 ab & 68.4 cd & 88.6 abc & 76.7 ab & 11.1 bcd & 0.237 ab & 0.58a & 0.170 ab \\
276 & Control & 1687 abcd & 55.3 ab & 84.1 ab & 80.7 abc & 9.8 ab & 0.262 abc & 0.68 ab & 0.143a \\  & Stress & 1895 cde & 74.5 def & 82.7 ab & 142.0f & 10.7 abcd & 0.294 bc & 1.03 def & 0.300d \\
360 & Control & 2329f & 85.3f & 99.5d & 111.0e & 12.1 cd & 0.330c & 1.26f & 0.255 cd \\  & Stress & 2321f & 80.9 ef & 93.3 bcd & 114.2e & 15.5e & 0.305 bc & 1.09 ef & 0.236 bcd \\
372 & Control & 1823 bcde & 62.1 abcd & 81.0a & 98.0 cde & 9.0 ab & 0.332c & 0.92 cde & 0.223 bc \\  & Stress & 1665 abc & 66.0 bcd & 93.5 cd & 86.0 bc & 12.0 cd & 0.179a & 1.27f & 0.200 abc \\
373 & Control & 1815 bcde & 58.3 abc & 84.0 ab & 79.9 abc & 10.2 abc & 0.261 abc & 0.78 abcd & 0.172 ab \\  & Stress & 1832 bcde & 67.4 cd & 84.7 abc & 108.0 de & 10.6 abcd & 0.225 ab & 0.88 bcde & 0.192 abc \\ \hline
**ANOVA** & & & & & & & & \\ Clone & *** & *** & *** & *** & ns & *** & ** \\ Treatment & ns & ns & ns & *** & *** & ns & ns \\ Interaction & ** & *** & *** & *** & *** & *** & ** \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Average annual values of mineral composition of must at harvest for each clone, irrigation treatment, and the interaction (clones \(\times\) irrigation treatment) during the 3-year period 2018–2020. Data are expressed as mg L\({}^{-1}\). 36% (188), compared to the average of other years (2018-2020, in the control treatment), as a consequence of a decreased irrigation water volume in 2021. In low-vigor clones, except for clone 276 under WS, where WUE\({}_{\text{yield}}\) decreased drastically, in clones 372, 373, and 360, WS also enhanced WUE\({}_{\text{yield}}\) by 34% (372), 158% (373), and 165% (360) compared to their controls (data not shown).