Abstract
Kohlrabi (Brassica oleracea var. gongylodes) ‘White Vienna cv.’ was grown in the Experimental Station of the Department of Horticulture and Landscape in the College of Agriculture at Tikrit University in Salah al-Din, Iraq, during the winter of 2021–2022. The purpose of this research was to examine the impact of seedling age and NPK combinations on kohlrabi plant growth and yield. Most values for vegetative growth traits and yield were found to be highest for seedlings aged 45 days. Plant growth and yield were enhanced by applying a 120:90:50 kg, ha-1 NPK combination fertilizer rather than a single kind of NPK. For optimal growth and highest output, the 45-day-old seedlings plus the 120-90-50-kg-ha-1 NPK fertilizer combination treatment was chosen over other interaction treatments.
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