Effect of zinc on growth, yield and quality of Knol-khol [Brassica oleracea var. gongylodes (L.)]

Abstract

A field experiment was conducted on Knol-khol to find out the effect of foliar application of zinc at different doses on various growth, yield and quality traits. The study revealed that the application of zinc showed an increase in all the 16 traits studied but highest increase was observed at 0.6% zinc per ha over the control. Maximum growth, yield and quality parameters are increases were observed in the plant height (27.90 cm), number of leaves per plant (11.16), leaf area (165.91 cm2), chlorophyll content (1.83 mg/g), knob diameter (7.85 cm), knob weight (186.52 g), knob yield per plot (4.47 kg), total yield (198.77 q/ha), TSS (10.22 bricks), protein content (3.94), nitrogen content in leaves (0.25%) and in knob (1.03%), phosphorus content in leaves (0.28%) and in knob (1.12%), zinc content in leaves (28.9 ppm) and in knob (55.0 ppm) followed by presence of net returns (3,06,502 Rs/ha) and benefit cost ratio (3.35) were find out. The profound effect of zinc fertilizer on growth and quality attributes are increases metabolic activities leads to increase knob diameter, weight and yield per hectare was exhibits these research programme.