Response of Seed Yield and Its components of Several Genotypes of Vicia faba L. to Spraying of Zinc Nanoparticle Fertilizer

A field experiment was conducted at a College of Agriculture research station at - the University of Anbar during the winter season of 2021-2022 to study the response of seed yield and its components of several genotypes of Vicia faba L. to spraying of zinc nanoparticle fertilizer. The experiment was carried out by Split Plots arrangement according to the Randomized Complete Block Design (R.C.B.D.) at three replications. The main plots included four concentrations of zinc nanoparticle fertilizer (0, 60, 12 and 180mg L-1 ), whereas the sub-plots included four faba bean genotypes (Local, American, Dutch and Italian). The results showed that the American genotype was significantly superior in the number of pods per plant (21.40 pod plant-1 ), fertility percentage per pod (88.80%), seed yield (6.57 Mg ha-1 ) and biological yield (11.01 Mg ha-1 ). In contrast, the Dutch genotype achieved the highest mean of the number of seeds per pod (5.64 seed pod-1 ) and weight of 100 seeds (107.68 g). Also, the spraying of zinc nanoparticles at 180 mg L-1were significantly superior in the number of pods per plant (22.35 pod plant1 ), weight of 100 seeds (111.40 g), fertility percentage per pod (90.30%), seed yield (6.23 Mg ha-1 ) and biological yield (10.78 Mg ha-1 ), while the spraying of zinc nanoparticle at a 120 mg L-1 gave the highest mean of the number of seeds per pod (5.66 seed pod-1 ). The interaction between two factors had a significant effect on the most studied traits; the American genotype with the spraying of zinc nanoparticle at 180 mg L-1 gave the highest values of the number of pods per plant (25.23 pod plant-1 ), fertility percentage in a pod (91.14%) and seed yield (7.88 ton ha-1 ). Keywords: Viciafaba L., nano-zinc, seed yield, yield components.