Effect of organic manure and inorganic fertilizers on growth and yield of knol-khol (Brassica oleracea var. caulorapa L.)

The present investigation was conducted to study the effect of organic manure (farmyard manure and vermin-compost) and inorganic fertilizer (NPS) on growth and yield of knol-khol at Horticulture Research farm of SKNCOA, Jobner. The experiment consisted of five levels of organic manure and four levels of inorganic fertilizers including control. Among organic manures higher level of vermin-compost (5 t ha⁻¹) and among inorganic fertilizers 100 % recommended dose of NPS resulted in maximum increase in growth attributes (plant height at harvest, diameter of knob, volume of knob, chlorophyll content, days taken to initiation and maturity of knob), total yield (226.33 qha⁻¹) and yield attributes (fresh weight of knob/plant and knob yield/plot). The results show interactive effect of organic manure and inorganic fertilizer on fresh weight of knob/plant and total yield.