srjalsSRJALSSRJALS2788-9386https://doi.org/10.47310/srjals.2023.v03i02.012Effect of foliar spraying with an atonic growth regulator on some indicators of vegetative growth and yield of Sesamum indicum L.SamahSaleh AL-ShybanyDepartment of Biology, College of Science, Al-Qadisiyah University, IraqIn order to know the effect of the atomic growth regulator on some field characteristics and seed yield of the local cultivar of sesame plant, the experiment was conducted in an agricultural field in Afak district, Al-Diwaniyah governorate during the summer 2021 season., following the order of the splinter panels with the design of complete random sectors and three replicates, where the Atonic growth regulator was used at a concentration of 1, 2 and 3 mg/liter, in addition to the comparison treatment. Some characteristics of vegetative growth and yield were studied (plant height, number of branches, number of leaves, leaf area, total chlorophyll index in leaves, total plant dry matter weight at flowering stage, number of fruit capsules, number of fruits in each fruit capsule, weight of 1000 seeds). The results showed an increase in the vegetative and physiological growth indicators, where the concentration of (1 mg/L) caused an increase in plant height, while the concentration of (2 mg/L) caused an increase in leaf area and chlorophyll content in the leaves, while the concentration of (3 mg/L) caused an increase in the number of branches and The number of leaves and the dry weight of the treated plants. As for the results of the yield indicators, the concentration of (3 mg/L) caused an increase in the number of fruit capsules and the concentration of (2 mg/L) caused an increase in the number of seeds in each fruit capsule. As for the weight of 1000 seeds, the comparison treatment outperformed the rest of the treatments.