## 4 Conclusions  
The results of the present work highlight the importance of biostimulant application in alleviating the negative effects of salinity stress on the chemical composition and mineral profile of _Diplotaxis tenuifolia_ plants; however, a varied response in relation to harvesting time was recorded for most of the studied parameters, which indicates the pivotal effect of growing conditions in addition to the complexity of plants' responses to biostimulants and salinity stress. In conclusion, further research is needed in order to suggest those conditions that allow the alleviation of the negative effects of salinity stress through biostimulant application and prescheduled harvesting time. Moreover, special consideration is needed regarding the nitrate content of leaves, which tend to increase with biostimulant application, while moderate salinity and proper harvesting time seem to reduce the health risks associated with nitrate accumulation in _D. tenuifolia_ leaves.  
Figure 3: Effect of biostimulants and harvesting time on minerals K (**A**) and Cl (**B**) in _Diplotaxis tenuifolia_ leaves, regardless of salinity level. Different letters indicate significant differences according to [PERSON]’s honestly significant difference (HSD) test at \(p=0.05\). Roman numbers (I–VI) indicate the successive harvests. BC: no biostimulants added; BA: plants treated with Auvym®; and BT: plants treated with Trainer®. All data are expressed as mean \(\pm\) SE (standard error), n = 3.  
**Supplementary Materials:** The following supporting information can be downloaded at: [[https://www.mdpi.com/article/10.3390/app13031569/s1](https://www.mdpi.com/article/10.3390/app13031569/s1)]([https://www.mdpi.com/article/10.3390/app13031569/s1](https://www.mdpi.com/article/10.3390/app13031569/s1)), Table S1: Analysis of variance of hydrophilic antioxidant activity (HAA), ABTS antioxidant activity, total phenols, total ascorbic acid (TAA), chlorophylls (a, b, and total chlorophyll), and total carotenoids; Table S2: Analysis of variance of minerals content; Table S3: Effect of biostimulant and harvesting time on hydrophylic antioxidant activity (HAA), ABTS antioxidant activity, total phenols, and total ascorbic acid (TAA) content in _Dipidaxis tenifolia_ leaves, regardless of salinity level; Table S4: Effect of biostimulants and harvest on minerals (Na, K, Ca, Mg, Cl, S, and P) and nitrate content in _Dipidaxis tenifolia_ leaves, regardless of salinity level.  
**Author Contributions:** Conceptualization, I.D.M., E.C. and M.M.; methodology, S.A.P. and Y.R.; software, L.O. and C.E.-N.; validation, I.D.M., L.O. and C.E.-N.; formal analysis, S.A.P.; investigation, Y.R. and M.M.; resources, E.C.; data curation, L.O.; writing--original draft preparation, I.D.M. and S.A.P.; writing--review and editing, C.E.-N. and Y.R.; visualization, I.D.M. and S.A.P.; supervision, E.C. and M.M.; project administration, E.C.; funding acquisition, Y.R. and M.M. All authors have read and agreed to the published version of the manuscript.  
**Funding:** This research received no external funding.  
**Institutional Review Board Statement:** Not applicable.  
**Informed Consent Statement:** Not applicable.  
**Data Availability Statement:** The datasets generated for this study are available on request to the corresponding author.  
**Acknowledgments:** The authors would like to thank [PERSON], [PERSON], and [PERSON] for their support in the laboratory work.  
**Conflicts of Interest:** The authors declare no conflict of interest.