Abstract:
A field experiment was conducted at the Sher-e-Bangla Agricultural University Farm,
Dhaka 1207 (Tejgaon series under AEZ No.28) during Kharif-I (March – September),
2019 to study the growth and yield performance of BARI Surjomukhi 2 in response to
sowing date, potassium and their combination. The experiment consisted of two
factors: Factor A: Four sowing date viz, S
1
: 21 March, S
ii
2
:21 April, S
: 22
June and Factor B: three levels of potassium; K
1
3
: recommended potassium (84 kg K
ha
-1
), K
2
: 125% recommended potassium (105 kg K ha
-1
), K
: 150% recommended
potassium (126 kg K ha
-1
3
). The experiment was laid out in split - plot design with
three replications. Sowing date was considered to main-plot and potassium level as
sub-plot. Data on different growth, yield and yield parameters were taken. Result
revealed that S
(21 March) showed highest plant height (141.60 cm) at 80 DAS, head
diameter (13.90 cm.) at harvest, no. of seed plant
1
-1
: 22 May, S
(693.6), seed yield plant
(40.03
g), weight of 1000-seed (45.17 g), seed yield (2.98 t ha
-1
), harvest index (44.51%).
The lowest head diameter at harvest(12.83cm), no. of seeds plant
-1
(514.33), seed yield
(2.14 t ha
-1
)was obtained from 22 May (S
).The shorten maturity days (73.78 days)
found from 21 March (S
1
3
). But in case of potassium level highest plant height
(131.43cm) at 80 DAS, no. of seeds plant
-1
(613.83), seed yield plant
(36.57g),
weight of 1000-seed (43.00g), seed yield (2.63 t ha
-1
-1
-1
) was obtained from 105kg K ha
(K
2
),whereas the lowest no. of seeds plant
-1
(514.33),seed yield plant
(30.31g), seed
yield (2.45 t ha
-1
)was found from 126 kg Kha
-1
(K
). The maximum plant height
(142.67cm), head diameter (14.90cm.), no. of seeds plant
3
-1
-1
(717.67), seed yield plant
(43.25g), weight of 1000-seed (46.33g) and seed yield (3.19 t ha
-1
) were obtained with
the combined effect of 21 March/105 kg K ha
-1
(S
1
K
)while the minimum no. of seeds
plant
-1
(512) and seed yield (2.08 t ha
-1
2
) found by sowing on22 May applying 126 kg
K ha
-1
(S
3
K
3
Description:
A Thesis
Submitted to the Department of Agronomy, Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka in partial
fulfillment of the requirement for the degree of
MASTER OF SCIENCE (MS)
IN
AGRONOMY
