This study was carried out on sesame crops at the College of Agriculture and Marshlands, Dhi Qar University in south of Iraq, during the 2023 agricultural season to assess the impact of marine algae extract Ascophyllum nodosum (Seamac Power) on the growth indicators of the sesame crop in Dhi Qar Governorate. The research involved two treatments: soaking with herbal extract solutions at concentrations of 0.5, 1, 1.5, and 2g. L^-1, and spraying with the same extract at the same concentrations, plus a control treatment for both methods. Various growth indicators were examined, including absolute growth rate, biomass sustainability, leaf water content, and average dry weights of the root and shoot systems. The study found that soaking seeds in a 1-1.5g. L^-1 solution and spraying with a 1.5g. L^-1 solution of marine algae extract significantly improved most growth indicators.