The study looked at how different levels of soil moisture affect the yield and quality of processed tomatoes. By testing four different soil moisture levels, researchers found that the best results were achieved with soil moisture at 70-75% of field capacity before irrigation. This led to the highest yield, better quality tomatoes, and the most efficient use of water. Too much or too little water in the soil before irrigation can negatively impact the amount of lycopene, soluble solids, soluble sugar, and soluble acid in the tomatoes. The study shows that maintaining the right soil moisture level is crucial for growing high-quality tomatoes efficiently.