Irrigation efficiency refers to the effectiveness of water use in agricultural practices. It measures how much of the water applied to crops actually reaches the plants' roots, as opposed to being lost through evaporation, runoff, or deep percolation. Higher irrigation efficiency means that more water is utilized by the crops, leading to better growth and reduced waste. Improving irrigation efficiency can involve various techniques, such as using drip irrigation systems, which deliver water directly to the roots, or implementing soil moisture sensors to optimize watering schedules. These methods help conserve water resources while ensuring that crops receive the necessary hydration for optimal yield.