Abstract:
The experiment was conducted at the horticultural research field of Sher-e-Bangla
Agricultural University, Dhaka, during the period from April to August 2017 to study
the effect of sowing time and GA
3
on the growth and yield of okra. Two factors was
considered for the present study such as four levels of gibberellic acid (GA
3
) viz. G
0
= 0
ppm GA
3
, G
1
= 60 ppm GA
3
, G
2
= 80 ppm GA
3
and G
3
= 100 ppm GA
3
and three levels
of sowing time viz. S
1
= 15 April 2017, S
2
= 30 April 2017 and S
3
= 15 May 2017. The
experiment was laid out in Randomized Complete Block Design with three replications.
Most of the studied parameters showed significant influence affected by gibberellic
acid and time of sowing and their combination. The highest performance was found at
the application of G
2
and lowest performance was found at the application of G
0
. In
terms of sowing time, highest performance was found at okra seed sown at S
2
and
lowest performance was found at S
3
. For combined effect the treatment combination of
G
2
S
2
showed the highest number of branch
(5.00), dry weight (13.40%), fruit (11.60
cm), diameter of fruit (8.96 cm), number of flowers (35.50), fruits plant
(22.60) and
fruit yield ha
-1
(18.90 t). But the highest plant height (123.00 cm), highest number of
leaves plant
-1
(29.10 cm), highest leaf length (50.43 cm), highest leaf breadth (30.00
cm), highest length of petiole (29.88 cm), highest stem diameter (3.50 cm) and highest
length of internodes (7.33 cm) was found from G
3
S
1
. In terms of economic analysis, the
highest BCR (3.12) was obtained from G
2
S
2
. Application of 80 ppm GA
3
and 30 April
seed sowing was best for growth and yield of okra.
