Effect of spraying with nano, traditional nutrient solution, and cytokinin on some vegetative traits for orange seedlings grafted on rangpur (Citrus aurantium L.) rootstock

Abstract

Present investigation was carried out at the Khaykan district, southeast of Babil province, during the period 1/9/2023 to 1/6/2024, on Six-month-old orange seedlings grafted on Rangpur rootstock. The aim of the study is to examine the effect of spraying with nano nutrient solutions at concentrations (0.1.2 g/L), traditional nutrient solutions at concentrations 1.g/L, and cytokinin at concentrations (0, 50, 100, 200 mg/L) and their interactions in the vegetative traits of seedlings. The results indicated that spraying seedlings with the single and combined study treatments led to a significant increase in seedling height, stem diameter, number of branches, number of leaves, leaf area, and average dry weight of the shoot, as treatment with the nano nutrient solution 1 gm/L with a cytokinin concentration of 200 mg/L was superior. By obtaining the highest rates for these characteristics compared to the control treatment.