Effect of Biofertilizers and Fertility Levels on Phenology, Agronomic Efficiency and Crop Recovery Efficiency of Gobhi Sarson (Brassica Napus L.)
Keywords:
Agronomic efficiency, <i>Azotobacter</i>, Biofertilizers, Crop recovery efficiency, <i>Gobhi sarson</i>, PhenologyAbstract
A field experiment was conducted during rabi 2022-23 at CSKHPKV Shivalik Agricultural Research and Extension Centre, Kangra (H.P.) to study the influence of fertility levels viz. control, 75% of recommended dose of fertilizer (RDF) and 100% RDF in main plots and seed inoculations with six liquid biofertilizers viz. Azotobacter, Phosphate solubilizing microorganism (PSMO), Potassium mobilizing biofertilizer (KMB), NPK consortia + Zinc solubilizing biofertilizer (ZSB), ZSB and control (no biofertilizer) as subplots of split plot design in gobhi sarson “GSC-7†on phenological stages and agronomic as well as crop recovery efficiency. Seed inoculation with liquid biofertilizers was done by soaking the seeds for 30 minutes in liquid biofertilizers procured from IFFCO. Application of 100% RDF recorded early flowering (79.6) and physiological maturity (165.5) being at par with 75% RDF compared to control. The higher values of agronomic efficiency and crop recovery efficiency were recorded in75% RDF and 100%RDF, respectively. Among biofertilizers, PSMO and Azotobacter recorded higher agronomic efficiency whereas crop recovery efficiency for total NPK was more with Azotobacter seed inoculation. The results indicated that seed inoculation with biofertilizers showed positive influence on phonological characteristics, agronomic as well as crop recovery efficiency. Amongst biofertilizers, Azotobactor was found to be the most efficient followed by PSMO. Thus, gobhi sarson seed treatment with liquid biofertilizerAzotobacter/PSMO and application of 120 kg N, 60 kg P2 O5 and 40 kg K2 O/ha is advisable.Downloads
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