Researchers tested new irrigation methods to save water on farms in China and Portugal. They studied different systems to see which saved the most water and money. By changing to better systems, they found that farmers could use water more efficiently and make more profit. For example, using wider irrigation basins in China increased water productivity by 40% and profit by 23%. In Portugal, using specific furrow designs increased water productivity by 65% and profit by 82%. The success of these new methods depended on adjusting them to fit the land and water available. The study shows that by updating irrigation systems, farmers can save water, earn more money, and help the environment.