The researchers used a combination of field experiments and computer simulations to study how using salty water for irrigation affects soil salt levels and crop yield. They found that high salinity in irrigation water can reduce crop growth and water productivity, while evaporation is influenced by drainage depth. Soil salt levels increased with higher irrigation water salinity, leading to lower crop yields. The study suggests that using water with a salinity level of 4.0-4.4 dS m−1 under a drainage depth of 80 cm is best for maintaining soil health and crop yield in the long term. This approach could help manage soil salinity and improve crop production in the future.