Abstract:
This experiment was conducted to find the most suitable crop establishment method and
weed management practices for transplanted aman rice in Bangladesh. Rice variety
Bangladesh Rice Research Institute (BRRI) dhan44 was used as planting materials where
three crop establishment methods (T1: direct wet seeding by drum seeder; T2: hand
broadcasting; T3: transplanting) and four weeding options (W1: Hand weeding (HW); W2:
BRRI weeder+HW; W3: Herbicide+HW; and W4: no weeding) were tested. Among the
crop establishment methods, the highest grain yield (5.12 t ha-1) was obtained with the T3,
while the highest benefit cost ratio (BCR) of 2.08 was found in T2. In case of the weed
management method, W1 showed superior results on the plant density/m2 (139.66) at 60
days after transplanting (DAT), grain yield (4.97 t ha-1), and BCR (2.03). On the other hand,
the highest plant dry matter (36.20 g) at 60 DAT and the highest yield (6.10 t ha-1) were
obtained in a T3W1 combination. The results of this study show that the productivity of rice
during aman season could be most significantly increased with the use of transplanting (T3)
alone, hand weeding (W1) alone, or a combination of the two methods (T3W1).
