Effect of Different Nutrient Practices and Methanotrophs on Growth of Rice under Submerged Condition

An investigation was undertaken during kharif, 2022-23 at the Experimental Farm, Department of Soil Science and Agricultural Chemistry, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth Dapoli, Dist. Ratnagiri. The field experiment was laid out in the factorial complete randomized design, consisting 16 treatment combinations comprising two factors i.e. four different nutrient source viz, control, recommended dose through chemical fertilizer, recommended dose through konkan Annapurna briquette and gliricidia application and four different methanotrophic consortium viz, control, type I, type II, and type Ib which were replicated three times to study the effect of different nutrient sources and methanotrophic bacteria on growth parameters. The significantly highest yield attributes like highest grain yield and straw yield was found were application of methanotrophic bacteria type II @ 5ml per pot combined with recommended dose of fertilizer 100:50:50 N:P2O5:K2O kg ha-1 as chemicals fertilizer. Also growth parameter viz. number of tillers, plant height and number of panicles were recorded highest in the treatment recommended dose of fertilizer 100:50:50 N:P2O5:K2O kg ha-1 through chemicals fertilizer was applied.