Different irrigation techniques are associated with significant differences in irrigation water productivity , and replacing inefficient systems can reduce average non-beneficial water consumption by up to 76% while maintaining stable crop yields . Several adjustments can improve water use efficiency, including extending irrigation intervals, shortening the time of watering crops or reducing the size of the plot being irrigated . Deficit irrigation is an important mechanism for improving water productivity  and increasing regional crop production under drying conditions . Access to irrigation can also play a role in alleviating poverty, contributing to reducing vulnerability and risks . However, the diversity of irrigation-related techniques and the consequent differences in effect and water-use intensity is often underreported .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report