AbstractThe goal of this study was to find out how the fine rice cultivar BRRI dhan 34 production was affected by nitrogen levels and weeding techniques. The experiment included three nitrogen levels viz. 50, 100, and 150 kg N ha-1 as well as three weeding schedules viz. one hand weeding at 15 DAT, two hand weeding at 15 and 30, and three hand weeding at 15, 30, and 45 DAT. Three replications of the experiment were set up in a randomized full block design. The findings demonstrated important correlations between weeding techniques, nitrogen levels, and yield components. When the crop was fertilized with 50 kg N ha-1, the best numbers of total tillers hill-1 (8.53), effective tillers hill-1 (7.51), grains panicle-1 (128.0), and grain yield (3.97 t ha-1) were attained. Regarding weeding practices, two manual weeding carried out at 15 and 30 DAT reported the highest numbers of effective tillers hill-1 (7.62), grains panicle-1 (128.1) and grain yield (4.10 t ha-1). The highest effective tillers hill-1 (8.33), the most grains panicle-1 (129.8), the grain yield (4.36 t ha-1) and straw yield (6.40 t ha-1) were found in two hand weeding combined with 50 kg N ha-1, and the lowest grain yield (3.53 t ha-1) was obtained from one hand weeding given at 15 DAT along with 150 kg N ha-1. In order to get the best grain production of fine rice, cv. BRRI dhan34, two manual weeding at 15 and 30 DAT and 50 kg N ha-1 are thus recommended.
Haque et al. (2024) studied this question.