Abstract:
A field experiment was conducted at the Agronomy field, Sher-e-Bangla Agricultural
University, Dhaka from December 2013 to July 2014. The experiment consisted of two
factors: Factor A: Variety viz. BRRI dhan28 (V
1
) and BRRI hybrid dhan2 (V
) and Factor B:
Methods of urea application viz. 100% Urea of the recommended dose (RD) was applied as 3
top dressing (T
1
), 100% Urea of RD was applied as 3 foliar spray (T
), 100% Urea of RD
was applied as 1 top dressing and 2 foliar spray (T
dressing and 2 foliar spray (T
4
3
2
2
), 75% Urea of RD was applied as 1 top
), 75% Urea of RD was applied as 3 foliar spray (T
) and 50%
Urea of RD was applied as 3 foliar spray (T
), following split-plot design with three
replications. The maximum number of filled, unfilled and total grains panicle
6
(155.2, 21.63
and 176.8 cm, respectively) were obtained from BRRI hybrid dhan2 while the minimum
(114.4, 19.31 and 133.7, respectively) were recorded from BRRI dhan28. The maximum
1000-grain weight (23.77 g) was obtained from hybrid variety and the minimum (21.35 g)
was found from the inbred variety. The highest grain yield (6.19 t ha
1
) and biological yield (13.93 t ha
-1
-1
-1
5
), straw yield (7.74 t ha
) were recorded from BBRI hybrid dhan2 whereas the
lowest (4.17, 3.53 and 7.70 t ha
-1
) were from BRRI dhan28. BRRI hybrid dhan2 has better
yield potential than BRRI dhan28 in boro season. Grain yield and biological yield were not
significantly influenced by methods of urea application. In the case of interactions, the
highest grain yield (6.50 t ha
-1
) was observed in 100% Urea of the recommended dose (RD)
was applied as 3 top dressing in BRRI hybrid dhan2.
-
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
AGRONOMY
SEMESTER: JANUARY-JUNE, 2015
