Effect of Integrated Use of Nitrogen and Biofertilizer on Yield of Cabbage (Brassica oleracea var. capitata L.)

An investigation was conducted at research farm, Department of Horticulture, Udai Pratap Autonomous College, Varanasi (U.P.) during 2018-19 to assess the effect of integrated use of nitrogen and biofertilizer on growth of cabbage cv. Golden Acre. The experiment comprised of 12 treatments viz. T0- Control, T1 - Azotobacter, T2 – Azospirillum, T3 - 75 % RDN + No biofertilizer, T4 - 75% of RDN + Azotobacter, T5 - 75% of RDN + Azospirillum, T6 - 100% of RDN + No Biofertilizer, T7 - 100% of RDN + Azotobacter, T8 - 100% of RDN + Azospirillum, T9 - 125% of RDN + No Biofertilizer, T10 - 125% of RDN + Azotobacter, T11- 125% of RDN + Azospirillum were evaluated in Randomized Block Design with three replications. The experimental findings revealed that number of days taken to 50% head maturity (65.21), number of days taken to 100% head maturity (73.23), diameter of stem (19.70 mm), head diameter (96.28 mm), gross weight per plant (1.71 kg), net weight of head per plant (1.48 kg), yield of head per plot (7.57 kg), yield of head per hectare (406.01 q/ha) were recorded under 75% of RDN + Azotobacter treated plot. Overall results indicated that conjoint use of inorganic N and biofertilizers (Azotobacter & Azospirillum) significantly increased the performance of cabbage as compared to chemical fertilizers alone. In this investigation, application of 75% of RDN + Azotobacter reduced the 25% chemical nitrogen.