Water management is a crucial factor in sustainable agriculture, directly influencing crop productivity and resource conservation. Digital weighing lysimeters have emerged as precise tools for monitoring soil water balance by measuring real-time weight fluctuations in a soilplant system. This article explores the installation, operation, principles, and applications of digital weighing lysimeters in modern agriculture. The installation process includes site selection, excavation, and assembly of load cells, drainage systems, and soil refilling to ensure natural water flow dynamics. Operational principles rely on high-precision sensors, automated data acquisition, and real-time monitoring of evapotranspiration and percolation. Applications include optimizing irrigation, enhancing crop yields, and preventing water stress. While these systems offer high accuracy and efficiency, challenges such as cost, maintenance, and technical expertise remain. Future advancements integrating AI and remote sensing are expected to enhance predictive modelling, making lysimeter technology more accessible for sustainable water management in agriculture.