Efficient irrigation scheduling ensures crops receive the right amount of water at the right time, boosting productivity while conserving water. With growing water scarcity and climate change impacts, precise management is essential for sustainable farming. This guide covers key methods, including soil moisture, evapotranspiration (ET), crop growth stage, and weather-based scheduling. It also highlights advanced technologies like automated systems, remote sensing, and mobile apps for improved accuracy. Effective irrigation reduces water waste, increases yields, and supports environmentally sustainable agricultural practices.