INFLUENCE OF NITROGEN AND SULPHUR ON THE GROWTH AND YIELD OF BRRI dhan63 IN BORO SEASON

Abstract

The experiment was conducted during the period from 13 th December 2015 to May 2016atboro season in the research farm of Sher‐e‐Bangla Agricultural University, Sher‐e‐ Bangla Nagar, Dhaka, Bangladesh to find out the effect of different levels nitrogen and sulphur on the growth and yield of BRRI dhan63. As planting material BRRI dhan63 also known as ‘Soru balam’ was used. The experiment was comprised of two factors as Factor A: Levels of N (3 levels)‐ N 0 : 0 kg N ha ‐1 (control), N 1 : 100 kg N ha ‐1 , N 2 : 140 kg N ha and Factor B: Levels of S (3 levels)‐ S 0 : 0 kg S ha ‐1 (control), S 1 : 10 kg S ha ‐1 , S 2 ‐1 : 15 kg N ha .The experiment was laid out in a randomized complete block design (RCBD) with three replications.Data were recorded on different growth and yield attributes and nutrient status of post‐harvest soil and significant variation was observed for different treatment. In case of nitrogen, at 30, 50, 70, 90 DAT and harvest, the tallest plant (39.89, 59.45, 77.45, 85.74 and 89.93 cm, respectively) was recorded from N , whereas the shortest plant (34.89, 54.64, 72.30, 80.11 and 80.68 cm, respectively) was found from N 1 . The highest grain yield (5.48 t ha ‐1 ) was found from N 1 , while the lowest grain yield (4.46 t ha 0 ‐1 ) was observed from N . The highest total nitrogen (0.053%) was found from N , while the lowest (0.013%) was observed from N 0 1 .The highest available S (22.05 ppm) was found from N , while the lowest (19.57 ppm) was observed from N 0 1 . For sulphur, at 30, 50, 70, 90 DAT and harvest, the tallest plant (39.90, 59.62, 76.88, 85.36 and 91.85 cm, respectively) was observed from S , while the shortest plant (34.88, 54.39, 72.40, 75.26 and 77.35 cm, respectively) was observed from S . The highest grain yield (5.37 t ha ‐1 ) was recorded from S , whereas the lowest grain yield (4.35 t ha ‐1 ) was observed from S 0 2 .The highest straw yield (6.80 t ha ‐1 2 ) was recorded from S , whereas the lowest straw yield (6.01 t ha ‐1 ) was observed from S .The highest total nitrogen (0.045%) was recorded from S 2 0 , whereas the lowest (0.032%) was found from S .The highest available S (22.70 ppm) was recorded from S , whereas the lowest (18.76 ppm) was found from S 0 2 . Due to the interaction effect of nitrogen and sulphur, at 30, 50, 70, 90 DAT and harvest, the tallest plant (42.99, 63.52, 80.38, 87.85 and 99.44 cm, respectively) was observed from N 1 S and the shortest plant (30.30, 51.70, 69.71, 72.46 and 73.68 cm, respectively) was recorded from N 2 0 S 0 .The highest grain yield (5.89 t ha ‐1 ) was found from N 1 S 2 , while the lowest grain yield (4.13 t ha ‐1 ) was recorded from N 0 S .The highest straw yield (7.33 t ha ‐1 ) was found from N 1 S 2 0 , while the lowest straw yield (5.88 t ha ) was recorded from N 0 S 0 .The highest total nitrogen (0.067%) was found from N , while the lowest (0.008%) was observed from N 0 S .The highest available S (24.59 ppm) was found from N 2 S 2 0 , while the lowest (16.99 ppm) was observed from N 0 S .It was revealed that application of 100 kg N ha ‐1 and10 kg S ha ‐1 0 was more potential in regarding yield contributing characters and yield of BRRI dhan63. 1 0 S 1 ‐1 ‐1 0 0 2