The present experiment was carried out to investigate the effect of biochar application as a soil amendment on rice yield under SAU (AEZ-28), Dhaka region Boro season condition in 2022-23. The rice variety, BRRIdhan100 were used as planting materials with treatment T0: without biochar, Treatment T1: Rice husk @ 3.0 t ha-1 + cowdung @ 10 t ha– 1, and T2: Biochar application types included Mango Biochar@ 3.0 t ha-1 which was applied at time of final land preparations for broadcasting in surface soil followed by base fertilizer application along with row position directly seeding the pre-germinated seeds)Mahagany biochar @ 3.0 t ha :(at initial stage of seedlings transplanting). The findings of the current study indicated that BRRI dhan100 biochar application treated by Mahagany biochar had significantly the tallest plant (114.78 cm), highest chlorophyll content (40.95) more tillers hill–1 total (1486.44) and filled grains panicle-1, longest panicle (26.72 cm) as well as highest weight of 1000-grain (22.54 g) which could be led to increase the grain yield 8.97 t ha-1, straw yield 9.47 t ha-1 and harvest index 48.66 %. In correlation coefficient, all the selected characters were positively correlated with grain yield means they have direct contribution for create grain yield but length of panicle and number of effective tillers hill–1 had greater contribution for BRRI dhan100. Further, PC analysis resulted positive and negative response showing such type of contribution for brings about the grain yield. Maximum change in postharvest soil nutrients were also found highest in Mahagany biochar applied plot of BRRI dhan100. Thus, the utilization of biochar might be a sustainable tool to improve plant growth and more yield production across the various agro-climatic zone of Bangladesh also justify the soil health and sustainable crop production.
Key words: Biochars, productivity, BRRI dhan100, soil improvement
Recent Comments