Yield performance of some short duration high yielding rice varieties during boro season in northern region of Bangladesh
Description
A field experiment was conducted at four locations of Rangpur Division during boro season from December 2021 to May 2022. Research field of BRRI regional station, Rangpur (Rashidpur, Mithapukur, Gopinathpur, Metro) and Dinajpur (Rampur, Parbatipur) were the trial sites. Five short duration Boro rice varieties, namely BRRI dhan28, BRRI dhan74, BRRI dhan81, BRRI dhan88 and Bangabandhu dhan100 were selected as treatment. The experiment was carried out in Randomized Complete Block Design (RCBD) with 4 replicates, using each site as a replicate. Highest yield performance was showed by BRRI dhan74 (8.2125 t ha-1) including best performance in overall production and effective tiller number per plant, panicle length, 1000 grain weight, biological yield and percent spikelet sterility. The second best yield performance was observed in BRRI dhan88 (6.89 t ha-1) followed by Bangabandhu dhan100 (6.33 t ha-1) and BRRI dhan81 (6.2875 t ha-1). The lowest yield performance was observed in BRRI dhan28 (5.305t ha-1). To replace BRRI dhan28, farmers may choose BRRI dhan74, BRRI dhan88, Bangabandhu dhan100 and BRRI dhan81. Farmers who prefer medium coarse rice can cultivate BRRI dhan74, while those who like medium slender to long slender grain can grow BRRI dhan88, Bangabandhu dhan100 and BRRI dhan81 respectively.