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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.
Noaman et al. (Thu,) studied this question.