Abstract
A pot experiment was conducted at research area under plastic net house of Sher-e-Bangla Agricultural University, Dhaka-1207 during 2019-20. BRRI dhan50 was used as planting material. The experiment was laid out in 2x2x3 factorial design with five replications and comprised of three factors viz., Factor-1 (Biochar-2 levels): B1 = (Control) 0.0 t ha-1, B2 = 5.0 t ha-1; Factor-2 (Drought stress-2 levels): D1 = At reproductive stage, D2 = At grain filling stage and Factor-3 (Time of harvest-3 levels): H1 = 3 weeks after flowering, H2 = 4 weeks after flowering and H3 = 5 weeks after flowering. Application of biochar @ 5tha-1 along with drought stress imposed at grain filling stage and crop harvested 5 weeks after flowering showed the best result for brown rice yield, head rice recovery, amylose content, protein content, grain aroma and taste of BRRI dhan50. Application of biochar also increased soil organic carbon content. It can be concluded from the present study that, biochar application can help in reducing atmospheric carbon emitted from puddled rice soil in normal field condition under climate smart technology.
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