In order to determine the water requirement of sunflower cultivars. an experiment was conducted during 2015-2016 at Ardestan Station. Isfahan. The experiment was carried out in a factorial randomized complete block design with four replications. https://www.roneverhart.com/HP-Pavilion-15-eg1053cl-15-6-FHD-Touch-Intel-Core-i5-1235U-3-30-GHz-Intel-Iris-Xe-Graphics-12-GB-DDR4-RAM-512-GB-SSD-/