EFFECTS OF NITROGEN AND BORON ON GROWTH AND YIELD OF KHOI BHUTTA

Abstract

An experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka-1207 during the Boro season of the year 2017-18 to evaluate the effects of nitrogen and boron on growth and yield of Khoi Bhutta. The two factorial experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Factor A: Four different levels of nitrogen [N 0 = Control (0 kg N ha -1 ), N 1 , N 2 = 100 kg N ha -1 , N 3 =

140 kg N ha -1 = 60 kg N ha ] and Factor B: Four different levels of boron [B 0 = Control (0 kg B ha -1 ), B 1 = 0.8 kg B ha -1 , B 2 = 1.2 kg B ha -1 , B 3 = ]. Significant variation was observed on growth and yield of Khoi Bhuttadue to application of different doses of nitrogen and boron. In case of nitrogen, the highest plant height at different days after sowing (76.8 cm, 121.8 cm and 166.8 cm respectively), number of leaves/plant at different days after sowing (14.25, 16.25 and 18.25 respectively), number of grain rows/cob (14.92), number of grains/row (41.25), number of grains/cob (542.10), 1000-grain weight (141.20 g), grain yield (3.78 t ha -1 ), stover yield (4.56 t ha ), biological yield (5.66 t ha -1 ), harvest index (45.32%), N in grain (1.65%), N in straw (1.48%), N in root (0.95%), B in grain (0.52%), B in straw (0.47%) and B in root (0.45%) were recorded from N 3 and lowest from N 0 . In case of boron, the highest plant height at different days after sowing (67.95 cm, 112.9 cm and 157.9 cm respectively), number of leaves/plant at different days after sowing (10.58, 12.58 and 14.58 respectively), number of grain rows/cob (12.58), number of grains/row (38.33), number of grains/cob (480.50), 1000grain weight (129.80 g), grain yield (3.33 t ha -1 ), stover yield (4.17 t ha -1 ), biological yield (7.51 t ha -1 ), harvest index (44.47%), N in grain (1.14%), N in straw (0.84%), N in root (0.34%), B in grain (0.58%), B in straw (0.42%) and B in root (0.37%) were recorded from B 3 and lowest from B 0 . In interaction, the highest plant height at different days after sowing (79.60 cm, 124.60 cm and 169.60 cm respectively), number of leaves/plant at different days after sowing (16.00, 18.00 and 20.00 respectively), number of grain rows/cob (16.67), number of grains/row (43.33), number of grains/cob (559), 1000-grain weight (43.70 g), grain yield (3.92 t ha -1 ), stover yield (4.66 t ha -1 ), biological yield (8.58 t ha -1 ), harvest index (45.69%), N in grain (1.78%), N in straw (1.54%), N in root (0.98%), B in grain (0.69%), B in straw (0.57%) and B in root (0.48%) were recorded from N 3 and lowest from N 0 B 0 . Therefore, the application of 140 kg N ha -1

1.6 kg B ha -1 with 1.6 kg B ha was suitable for better growth and yield of Khoi Bhutta. -1 -1 -1 B 3