The experiment proceeded in the Telafer site during the year 2022, with two seasons (spring and autumn) to study two maize (Zea mays L.) cultivars (Furat and Dijla) and eight levels of fertilizers (control treatment, 120 kg N₁₅P₁₅K₁₅ ha^-1 of traditional compound fertilizer, 1.5 and 3 g liter^-1 of N₂₀P₂₀K₂₀ nano fertilizer, 1 and 2 ml liter^-1 of Optimum Plus organic fertilizer, 1.5g liter^-1 of N₂₀P₂₀K₂₀ nano fertilizer + 1 ml liter^-1 of organic fertilizer, and 3 g liter^-1 of N₂₀P₂₀K₂₀ nano fertilizer + 2ml liter^-1 of organic fertilizer) on yield traits of the maize grain. The research employed a randomized complete block design (RCBD) using the s p li t-pl o t system, with the cultivars placed in the main plots, and the fertilizers in the secondary plots. Results indicated that the Furat cultivar excelled in all yield trai t s in the two seasons, except for the weight of the cob and the w e ig h t of 500 g r a i n s in the autumn season; cultivar Dijla was superior in the biological yield for the two seasons. As for the fertilizers, the treatment 2ml L^-1 of the organic fertilizer achieved the highest rate in all studied traits for both seasons, except for the traits cob weight and biological yield, where the treatment was superior in 3 g L^-1 of the N₂₀P₂₀K₂₀ nanofertilizer. The interaction showed significant differences in all studied traits of maize in both seasons.

Keywords: Maize (Zea mays L.), cultivars, organic fertilizer, NPK, nano fertilizer, foliar application, grain yield

Key findings: The possibility of replacing costly and field-strained ground fertilization with cheaper and more efficient foliar fertilization to grain yield and its components and its reflection on productivity and the maize (Zea mays L.) cultivars significantly impacted these traits.