Int.J.Curr.Microbiol.App.Sci.2020.9(6) : 86-97

DOI : https://doi.org/10.20546/ijcmas.2020.906.011

A field experiment was conducted during kharif season of 2019, at crop research farm of Department of Agronomy at Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj which is non-traditional area of basmati cultivation in North Eastern plains of Eastern Uttar Pradesh with the objective to study the effect of biofertilizers on growth, yield and economics of rice (Oryza sativa L.) Var. Pusa Basmati-1 under Randomized block design comprising of 11 treatments of  which farmer’s practice (T₁) (N:P:K at 100:40:20 kg ha^-1) and rest of treatments (T₂-T₁₁) with sole and in combination of biofertilizers (Azotobacter, PSB, Azospirillum, Azolla) along with inorganic fertilizers (RDF N:P:K at 120:60:60 kg ha^-1) which are replicated thrice. The experimental results revealed that application of T₉ (RDF + PSB at 2 kg ha^-1 + Azospirillum at 2 kg ha^-1) has recorded highest No. of grains panicle^-1 (151.93) and No. of panicles hill^-1 (21.80). Highest Benefit: Cost ratio was recorded by application of T₂ (RDF + Azotobacter at 2 kg ha^-1) and the application of T₇ (RDF + Azotobacter at 2 kg ha^-1 + Azospirillum at 2 kg ha^-1) has recorded significantly maximum grain yield (6.88t ha^-1), gross return (Rs.1,92,550 ha^-1) and net return (Rs.1,34,470 ha^-1).

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