Abstract:
The experiment was conducted in the experimental area Agronomy Farm of Sher-e-
Bangla Agricultural University, Dhaka during the period from November 2012 to
April, 2013 in Boro season to study the effect of irrigation and weed management of
BRRI dhan28. The experiment comprised of five levels of irrigation viz. I
: All time
available water; I
2
: Irrigation at 2 days after field drying; I
: Irrigation at 4 days after
field drying; I
4
: Irrigation at 6 days after field drying and I
3
: Irrigation at 8 days after
field drying and three levels of weed management viz. W
0
5
: No weeding, W
: Weeding
at tillering stage and W
: Weeding at flag leaf initiation stage. The experiment was
laid out in split plot design with three replications. Data on weed population, different
growth parameter and yield of rice was recorded and significant variation was
observed for different treatments. The highest grain yield (5.90 t ha
2
-1
) was observed
from I
2
, whereas the lowest (4.94 t ha
-1
) was recorded from I
. The highest grain yield
(5.69 t ha
-1
) was recorded from W
1
, while the lowest (4.80 t ha
5
-1
1
1
) was found from W
.
The highest grain yield (6.44 t ha
-1
1
) was found from I
5
W
0
) was observed from I
2
W
1
and the lowest (3.59 t ha
treatment combination. The increased yield of I
was
attributed due to the greater plant growth and number of field grain per panicle.
2
W
1
0
Description:
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree
of
MASTER OF SCIENCE (MS)
IN
AGRONOMY
SEMESTER: JANUARY-JUNE, 2014
