Effect of nano phosphorus and garlic extract Allium Sativum on growth, yield of pepper plant Capsicum annuum L.

الملخص

This study was conducted with the aim of investigating the effect of foliar application of nano fertilizer (phosphorus) at different concentrations of the nano fertilizer and varying concentrations of garlic extract, and their interactions on the vegetative growth traits, chemical content, and active substances of the pepper plant Capsicum annuum. This study was done in the fields belonging to the College of Science at Al-Qadisiyah University during the spring agricultural season of 2024/2025 from the period of 20/9/2024 to 25/11/2024. The experiment was designed including 36 experimental units with three replications. The first factor consisted of four concentrations (0, 2, 4, 6 g/L) of nano phosphorus fertilizer, in addition to a control treatment, while the second factor involved concentrations of the extract (0, 15, 20 g/L). The results showed that the use of nano fertilizers and garlic plant extracts, and the interaction between them at different concentrations, led to a significant increase in most of the studied vegetative growth traits of the plants, and the increase was greater with the increase in the concentration of the nano fertilizer, such as plant height. Foliar application of the nano fertilizer resulted in a significant increase in the average plant height, stem diameter (cm) of the plant, number of leaves (leaves/plant), average fresh yield of leaves (g/plant), leaf area (cm), average dry yield of leaves (g/plant).