Response of growth and yield of Sorghum (Sorghum bicolor L.) to different levels of Humic acid and sea- ALgae extract

The experiment was carried out during spring season of 2021 in two locations; first at village of Al-Thulja (10 km) northwest of Mosul, and second at Al-Shuada’a village (35 km) southwest of Mosul, this experiment aimed study of effect of Humic acid, and Seaweed algae on growth and forage yield of Sorghum (Sorghum bicolor L.).This experiment was carried out according to Split-plot in Randomized Complete Block Design (RCBD) with three replications, where the main plot for Seaweed Algae with three levels (0, 2, and 4 ml.L-1) (dissolved in water), while Humic acid with three levels was in sub-plot (0, 6, and 12 kg.ha-1).The most of important results can be summarized as follow: most of growth, and dry forage yield traits at Seaweed Algae (4 ml.L-1) in both locations, were superior of dry forage yield (13 tons.ha-1) at (4 ml.L-1) in second location. Humic acid (12 kg.ha-1) had highest values for all traits at both locations where (12.8, and 12.85 tons.ha-1) for both locations respectively.