Abstract:
The experiment was conducted during the period of October 2017 to February
2018 in the Research farm of Sher-e-Bangla Agricultural University, Sher-eBangla
Nagar,
Dhaka-1207
to
find
out
the
effect
of
humic
acid
and
salicylic
acid
on
morphology and yield of mustard. BARI Sarisha 15 was used as planting
material in this experiment. The experiment comprised of two factors- Factor A:
Levels of humic acid (HA): 4 levels - i) HA
0
: 0 kg/ha (control), ii) HA
1
: 8.0
kg/ha, iii) HA
2
: 16.0 kg/ha, iv) HA
3
: 24.0 kg/ha and Factors B: Levels of
salicylic acid (SA): 4 levels - i) SA
0
: 0 mM SA (control), ii) SA
1
: 0.2 mM SA,
iii) SA
2
: 0.4 mM SA, iii) SA
3
: 0.6 mM SA. The two factors experiment was laid
out in Randomized Complete Block Design (RCBD) with three replications.
Data were recorded on different morphological characters, yield contributing
parameters and yield of mustard and significant variation was observed for
different treatments. For humic acid, at 30, 40, 50, days after sowing (DAS) and
at harvest, the tallest plant (63.35, 85.31, 97.21 and 103.99 cm, respectively) was
recorded from HA
3
, whereas the shortest plant (57.77, 75.02, 86.91 and 94.83
cm, respectively) from HA
0
. The highest number of siliqua (48.26) was recorded
from HA
3
, whereas the lowest number (40.21) from HA
0
. The highest seed yield
(1.89 t/ha) was recorded from HA
3
, whereas the lowest (1.34 t/ha) from HA
0
. In
case of levels of salicylic acid, at 30, 40, 50 DAS and at harvest, the tallest plant
(64.22, 89.09, 101.43 and 108.24 cm, respectively) was recorded from SA
3
,
while the shortest plant (55.91, 71.20, 80.88 and 89.54 cm, respectively) from
SA
0
. The highest number of siliqua (47.36) was recorded from SA
3
, while the
lowest number (40.11) from SA
0
. The highest seed yield (1.79 t/ha) was
recorded from SA
3
, while the lowest (1.36 t/ha) from SA
0
. Due to the interaction
effect of different levels of humic acid and salicylic acid, at 30, 40, 50 DAS and
at harvest, the tallest plant (69.77, 96.82, 111.49 and 114.98 cm, respectively)
was found from HA
3
SA
3
and the shortest plant (52.11, 62.00, 72.91 and 83.78
cm, respectively) from HA
0
SA
0
. The highest number of siliqua (52.07) was
found from HA
3
SA
3
and the lowest number (32.00) from HA
0
treatment
combination. The highest seed yield (1.97 t/ha) was found from HA
3
and the
lowest (1.06 t/ha) from HA
0
SA
0
treatment combination. Among the combination
of different levels of humic acid and salicylic acid, 24.0 kg/ha humic acid with
0.6 mM salicylic acid induced superior growth, yield contributing characters and
yield of mustard.
SA
0
SA
3