Abstract:
The experiment was conducted during the period of July to November, 2017 in
the experimental farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla
Nagar, Dhaka to assess the effect of NPK briquette fertilization on the growth
and yield of aromatic rice variety BRRI dhan70. The experiment comprised of
the following 7 treatments as- T
0
: Control i.e. no fertilizer; T
1
ii
: 100% RFD; T
2
:
120% RFD; T
3
: 80% RFD; T
4
: 1 NPK briquette in between 4 hills and T
5
: 2
NPK briquette in between 4 hills and T
6
: 80% RFD + 1 NPK briquette in
between 4 hills. The experiment was laid out in Randomized Complete Block
Design (RCBD) with three replications. Data were recorded on different yield
contributing characters, yield and characteristics of post-harvest soil. Statistically
significant variation was recorded for different treatments. During harvest, the
longest plant (126.06 cm) was recorded from T
6
treatment, while the shortest
plant (110.68 cm) from T
0
. The maximum number of effective tillers hill
(22.80) was observed from T
6
treatment, whereas the minimum number (15.40)
from T
0
treatment. The longest panicle (26.63 cm) was recorded from T
6
treatment, while the shortest panicle (19.50 cm) from T
0
treatment. The
maximum number of filled grains panicle
-1
treatment, while the minimum number (101.60) from T
0
(120.60) was observed from T
6
treatment. The highest
grain yield (4.72 t ha
-1
) was recorded from T
6
treatment, while the lowest grain
yield (2.04 t ha
-1
) from T
0
treatment. In post-harvest soil, the highest total N
(0.067%) was found from T
6
treatment, while the lowest soil total N (0.021%)
from T
0
treatment. The highest available P (39.32 ppm) was observed from T
6
treatment, whereas the lowest available P (14.40 ppm) from T
0
treatment. The
highest exchangeable K (0.177 meq/100 g soil) was observed from T
6
treatment,
while the lowest exchangeable K (0.123 meq/100 g soil) from T
0
treatment.
Applications of T
6
treatment (80% RFD + 1 briquette NPK) was the superior
among the other treatments in consideration of yield contributing characters and
yield of aromatic rice variety BRRI dhan70.
