A field experiment was conducted during the Kharif season of 2019-2020 and 2020-2021 under acidic soil conditions in Nagaland. The experiment was laid out in randomized block design with 11 treatments and 3 replications. Growth and yield parameters were recorded. The data were analyzed and computed statistically to compare the treatment effect. The plant height, number of branches per plant, yield attributes, seed, stover yield and nutrient uptake are influenced significantly by the combined application of fertilizer, biochar, and pig manure. The highest values of these parameters were recorded with T9 (RDF + 2.0 t ha-1 pig manure + 5.0 t ha-1 wood biochar) treatment. The T9 treatment increased seed yield by 86.3% and 76.1% and stover yield by 30.8% and 30.3% during 2019-2020 and 2020-2021, respectively. From the experiment conducted, ricebean responded well to the combined application of biochar, pig manure, and fertilizer.