Water productivity in crops refers to the amount of crop yield produced per unit of water used, making it an essential concept for sustainable agriculture. Improving water productivity involves efficient water management practices such as deficit irrigation, where crops receive less water than traditional irrigation schedules, but in a way that doesn’t compromise yield. Additionally, selecting drought-tolerant crop varieties and using technologies like drip irrigation can improve water use efficiency. By optimizing water resources and reducing waste, farmers can achieve higher yields with less water, ensuring better productivity in areas with limited water availability and enhancing food security globally.