## 4 Discussion
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{**Treatments**} & \multicolumn{2}{c}{**Chlorophyll (g)**} & \multicolumn{2}{c}{**Na\({}^{\star}\) (\%)**} & \multicolumn{2}{c}{**Ca\({}^{2\star}\) (\%)**} & \multicolumn{2}{c}{**K\({}^{\star}\) (\%)**} \\ \cline{2-10}  & **1 st Season** & **2 nd Season** & **1 st Season** & **2 nd Season** & **1 st Season** & **2 nd Season** & **1 st Season** & **2 nd Season** \\ \hline \hline (a) Salinity & & & & & & & & \\ S1 & 56.4 \({}^{\text{a}}\) & 58.1 \({}^{\text{a}}\) & 0.22 \({}^{\text{a}}\) & 0.20 \({}^{\text{a}}\) & 1.71 \({}^{\text{a}}\) & 1.76 \({}^{\text{a}}\) & 3.41 \({}^{\text{a}}\) & 3.53 \({}^{\text{a}}\) \\ S2 & 47.4 \({}^{\text{b}}\) & 48.8 \({}^{\text{b}}\) & 0.16 \({}^{\text{b}}\) & 0.17 \({}^{\text{b}}\) & 1.53 \({}^{\text{b}}\) & 1.52 \({}^{\text{b}}\) & 3.01 \({}^{\text{b}}\) & 3.05 \({}^{\text{b}}\) \\ S3 & 36.2 \({}^{\text{c}}\) & 37.3 \({}^{\text{c}}\) & 0.11 \({}^{\text{b}}\) & 0.14 \({}^{\text{b}}\) & 1.44 \({}^{\text{c}}\) & 1.41 \({}^{\text{c}}\) & 2.69 \({}^{\text{c}}\) & 2.75 \({}^{\text{c}}\) \\ (b) Nutrient recipe & & & & & & & & \\ N1 & 48.1 \({}^{\text{a}}\) & 49.2 \({}^{\text{a}}\) & 0.12 \({}^{\text{a}}\) & 0.18 \({}^{\text{a}}\) & 1.62 \({}^{\text{a}}\) & 1.63 \({}^{\text{a}}\) & 3.35 \({}^{\text{a}}\) & 3.38 \({}^{\text{a}}\) \\ N2 & 47.8 \({}^{\text{a}}\) & 49.2 \({}^{\text{a}}\) & 0.14 \({}^{\text{a}}\) & 0.17 \({}^{\text{a}}\) & 1.53 \({}^{\text{b}}\) & 1.54 \({}^{\text{b}}\) & 3.21 \({}^{\text{b}}\) & 3.22 \({}^{\text{b}}\) \\ N3 & 45.6 \({}^{\text{a}}\) & 46.9 \({}^{\text{a}}\) & 0.17 \({}^{\text{b}}\) & 0.17 \({}^{\text{a}}\) & 1.52 \({}^{\text{b}}\) & 1.42 \({}^{\text{b}}\) & 2.96 \({}^{\text{b}}\) & 3.03 \({}^{\text{b}}\) \\ N4 & 45.5 \({}^{\text{a}}\) & 46.8 \({}^{\text{a}}\) & 0.15 \({}^{\text{b}}\) & 0.16 \({}^{\text{b}}\) & 1.41 \({}^{\text{c}}\) & 1.38 \({}^{\text{c}}\) & 2.62 \({}^{\text{c}}\) & 2.71 \({}^{\text{c}}\) \\ (c) Grafting & & & & & & & & \\ Grarded & 48.7 \({}^{\text{a}}\) & 50.1 \({}^{\text{a}}\) & 0.18 \({}^{\text{a}}\) & 0.17 \({}^{\text{a}}\) & 1.61 \({}^{\text{a}}\) & 1.57 \({}^{\text{a}}\) & 3.93 \({}^{\text{a}}\) & 3.18 \({}^{\text{a}}\) \\ Non-grafted & 41.7 \({}^{\text{b}}\) & 43.2 \({}^{\text{b}}\) & 0.13 \({}^{\text{b}}\) & 0.12 \({}^{\text{b}}\) & 1.46 \({}^{\text{b}}\) & 1.43 \({}^{\text{b}}\) & 3.28 \({}^{\text{b}}\) & 3.04 \({}^{\text{b}}\) \\ (b) Cultivars & & & & & & & & \\ Valouro-RZ & 47.8 \({}^{\text{a}}\) & 49.2 \({}^{\text{a}}\) & 0.14 \({}^{\text{b}}\) & 0.16 \({}^{\text{a}}\) & 1.53 \({}^{\text{b}}\) & 1.52 \({}^{\text{a}}\) & 3.23 \({}^{\text{a}}\) & 3.22 \({}^{\text{a}}\) \\ Ghandowra-F1 & 45.6 \({}^{\text{a}}\) & 46.9 \({}^{\text{a}}\) & 0.17 \({}^{\text{a}}\) & 0.16 \({}^{\text{a}}\) & 1.62 \({}^{\text{a}}\) & 1.61 \({}^{\text{a}}\) & 3.37 \({}^{\text{a}}\) & 3.38 \({}^{\text{a}}\) \\ Feisty-Red & 38.4 \({}^{\text{b}}\) & 39.2 \({}^{\text{b}}\) & 0.12 \({}^{\text{b}}\) & 0.14 \({}^{\text{b}}\) & 1.52 \({}^{\text{b}}\) & 1.42 \({}^{\text{b}}\) & 2.96 \({}^{\text{b}}\) & 3.03 \({}^{\text{b}}\) \\ \hline \hline \end{tabular} Note: The values with different superscript letters in a column are significantly different (\(p<0.05\)).  
\end{table} 
Table 5: Influence of salinity (S) and nutrient recipe (N) treatments on leaf chlorophyll and mineral composition: salinity stress, nutrient recipe, grafted condition, and tomato cultivars. compared with that under both S1 and S2. The WUE results followed the same trend of total fruit yield. The mean WUE showed significant differences under different salinity levels, with the WUE under S1 conditions (31.3 kg m\({}^{-3}\)) being the highest, followed by that under S2 conditions (30.4 kg m\({}^{-3}\)). However, the mean WUE under S3 conditions (17.7 kg m\({}^{-3}\)) was significantly lower compared with that under both S1 and S2 conditions. The results of grafted and non-grafted Ghandowra-F1 plants showed a significant decrease in total fruit yield with an increase in salinity concentration.