The study looked at ways to save water in growing tomatoes by using different irrigation techniques. They tested two methods, regulated deficit irrigation (RDI) and partial root zone drying irrigation (PRD), compared to full irrigation (FI). The results showed that RDI and PRD used less water but did not affect the tomato plants' ability to make food through photosynthesis. The tomatoes grown with RDI and PRD had higher levels of certain nutrients and acidity compared to those grown with FI. Overall, using these water-saving techniques could help farmers grow tomatoes more efficiently in arid climates.