Effect of foliar application of seaweed extract , nano fertilizer, and addition of humic acid on the chemical traits of fig seedling.

Abstract

     A factorial experiment was conducted according to the complete  Randzom Block Design(CRBD )in Babil Governorate during the 2025 growing season to study the effect of soil application of humic acid (0 and 10 g pot ¹), foliar spraying with nano ferrous oxide fertilizer (0, 1000, and 2000 mg L⁻¹), and seaweed extract at concentrations of (0, 4, and 8 mL L⁻¹) on some vegetative and chemical traits of the fig cultivar (Aswad Diyala).After the experiment ended on 10/11/2025, the results were analyzed using the GenStat program, and means were compared using the Least Significant Difference (LSD) test at a probability level of 0.05. The results showed that the treatment of humic acid application at 10 g pot⁻¹ significantly outperformed the other treatments in the studied vegetative traits. The foliar spraying with nano fertilizer at a concentration of 2000 mg L⁻¹ showed significant superiority in all studied traits. Likewise, foliar spraying with seaweed extract at a concentration of 8 mL L⁻¹ resulted in significant superiority in all studied traits