Abstract:
The field experiment was accomplished at the Horticulture Farm in Sher-e-Bangla
Agricultural University, Dhaka, during the period from April to September 2020 to
find out the performance of okra in response to GA
3
and Potassium fertilizer . In this
experiment BARI Dherosh 1 was used as the test crop .The experiment consisted of
two factors and followed RCBD design with three replications. Factor A: Growth
regulators (three levels) as - G
0
: Control (no growth regulators/water), G
1
: (100 ppm
GA
3
) and G
2
: (120 ppm GA
3
) and Factor B: Potassium (three levels) as - K
0
: Control
(no K
2
O was applied), K
1
: 80 kg K
2
O ha
-1
and K
2
: 100 kg K
2
O ha
. With the
application of GA
3
, at 20, 40 and 60 DAS the longest plant (15.80 cm, 73.74 cm and
90.70 cm) was recorded from G
1,
and the shortest plant (13.91 cm, 64.98 cm and
79.55 cm) was found in G
0
. The highest yield per hectare (17.69 ton) was recorded
from G
1
,whereas the lowest yield per hectare (14.18 ton) from G
0
. In case of
potassium fertilizer, at 20, 40 and 60 DAS the longest plant (16.67 cm, 77.93 cm, and
90.70 cm) was found in K
2
and the shortest plant (13.01 cm,59.02cm and 79.22cm)
from K
0.
The highest yield per hectare (19.13 ton) was obtained from K
2,
whereas the
lowest yield per hectare (11.64 ton) was recorded from K
0
. In case of combination
effect of GA
3
and potassium fertilizer, the maximum pods/plant (40.62) and highest
yield per hectare (18.41 ton) was found from G
1
K
2
, again the minimum pods/plant
(21.72) and lowest yield per hectare (12.91 ton) from G
0
K
0
. In addition, hormone
treatment enhanced flowering and fruiting time of okra. The findings of the present
study indicate that 100 ppm GA
3
with 100kg K
2
O ha
-1
was suitable combination to
produce the highest growth and yield of okra.
