Abstract
The study was conducted at Latif Experiment Farm, Sindh Agriculture University, Tandojam on a non-saline and non-sodic medium textured soil, to determine the effect of water stress (different irrigation frequencies) on growth, yield and oil content of sunflower variety Hysun-33. There were significant differences among the water stress treatments for all the growth and yield parameters, seed yield and seed oil content. Four regular irrigations with 10-day interval and first irrigation after 40 days after sowing (DAS), produced significantly higher seed yield of 931 kg/ha with 41.81% seed oil content was recorded for four regular irrigations followed by three and two irrigations, giving 918 and 620 kg/ha, respectively. Similar trend was noted for oil content and most of the growth parameters. Key words: sunflower, water stress
