Vol. 9, Special Issue 9, Part I (2025)

The present investigation entitled “Effect of levels of fertilizers and different spacing on growth, yield and quality of knol-khol (Brassica oleracea L. var. gongylodes) cv. Pusa Virat” was carried out during the Rabi season of 2024–25 at the Horticulture Research Farm, Department of Horticulture, B. A. College of Agriculture, Anand Agricultural University, Anand, Gujarat.The experiment was laid out in a Factorial Randomized Block Design with three replications. The treatments consisted of three levels of NPK combination (110:70:70, 90:70:70, 70:60:60 kg/ha) and four spacing (30 x 20, 20 x 45, 45 x 45 and 45 x 20 cm).The data on growth, yield, quality and soil properties were recorded and statistically analyzed treatments.The results revealed that application of 110:70:70 NPK kg/ha (C1) significantly enhanced growth parameters such as plant height (53.15 cm), number of leaves (19.44) and leaf area (442.55 cm²). Among spacing treatments, wider spacing of 45 × 45 cm (S3) recorded the highest plant height (54.67 cm), leaf number (18.58) and maximum leaf area (480.17 cm²). The earliest knob initiation (21.22 days) and highest individual plant dry matter (137.60 g) were also observed under 45 × 45 cm (S3).Yield-related traits such as knob length (8.50 cm), knob diameter (8.16 cm), knob weight (414.85 g), knob volume (339.61 cm³) and fresh plant weight at harvest (697.99 g) were significantly higher under C1. Similarly, spacing S3 yielded the best knob development and individual plant biomass. However, the maximum yield per plot (46.61 kg) and per hectare (28.77 t/ha) was recorded under closer spacing S1 (30 × 20 cm), indicating higher land-use efficiency due to greater plant population. The interaction between fertilizer levels and spacing was found non-significant for all parameters.