YIELD OF AROMATIC RICE AS INFLUENCED BY HERBICIDAL WEED CONTROL

Abstract

The experiment was conducted at the Agronomy field, Sher-e-Bangla Agricultural University (SAU), Dhaka-1207, Bangladesh during July to December 2018 to find out the performance of modern aromatic rice as influenced by herbicidal weed control. Weed control viz., W0-No herbicide used (Control), W1-Metsulfuron methyl 10% + Chlorimuron ethyl 2% @ 15 g ha−1, W2-Metsulfuron methyl 10% + Chlorimuron ethyl 2% @ 20 g ha−1 and W3-Metsulfuron methyl 10% + Chlorimuron ethyl 2% @ 25 g ha−1 and 30 days old seedlings of V1-BRRI dhan70, V2-BRRI dhan79 and V3-BRRI dhan80 were transplanted under present study as treatment. The experiment was laid out in a split plot design with three replications where herbicidal weed control was placed along the main plot and variety in the sub plot. The results revealed that different herbicidal treatments had significant effect on crop growth parameters, yield and yield contributing characters of three aromatic rice varieties. The highest effective tillers hill−1 (18.87), longest panicle (35.81 cm), maximum total grains panicle−1 (97.97), maximum filled grains panicle−1 (86.46), highest 1000-grain weight (29.24 g), highest grain yield (6.24 t ha−1) and maximum days to weed emergence (24.33) were obtained from the combination Metsulfuron methyl 10% + Chlorimuron ethyl 2% @ 20 g ha−1 in BRRI dhan70 compared to that of other herbicidal treatments in other two rice varieties.