Drip irrigation is the most water-efficient irrigation method, as it delivers water directly to the root zone of plants with little to no runoff or evaporation. This method delivers water slowly and steadily, minimizing water waste and allowing plants to absorb water as needed. Drip irrigation also reduces weed growth and minimizes soil erosion. In contrast, surface irrigation and sprinkler irrigation can result in significant water loss due to runoff, evaporation, and wind drift. While drip irrigation may require a higher initial investment, it can save water and money in the long run, making it a popular choice for water-scarce regions and environmentally conscious farmers.