Abstract:
The experiment was conducted at the Horticultural Farm of Sher-e-Bangla
Agricultural University, Sher-e-Bangla Nagar. Dhaka, during the period from October
2007 to March 2008 to determine the effect of planting time and growth regulators on
the growth and yield of cauliflower. The experiment consisted of two factors; Factor
A : Planting Time - 3 levels such as P
1
: Early
planting
at 1 November; P
2:
Mid
planting at 15 November and P
3
: Late planting at I December; Factor
B:
Plant growth
regulators - 4 levels, such as H
0
- No Hormone (control); H
1
: 10 ppm IAA (lndole-3
Acetic Acid); 11
2
: 70 ppm GA3
(Gibberelic Acid) and 1-1
3
: 10 ppm IAA + 70 ppm GA
3.
The experiment was laid out following Randomized Complete
Block
Desgin (RCI3D)
with three replications. In case of planting time highest plant height at harvest (63.82
cm), curd diameter (22.82 cm), marketable yield per hectare (28.11 tTha) was recorded
from P2
and the lowest was recorded from P
3
. In case of growth regulators highest
plant height at harvest (63.25 cm), curd diameter 022.65 cm, marketable yield per
hectare (29.88 tlha) was recorded from H
3
and the lowest was recorded from H
0.
Combination of planting time and growth regulators the highest plant height at harvest
(67.46 cm), curd diameter
(25.75
cm), marketable yield per hectare (31.03 t./ha) was
recorded from P
2113
and the lowest was recorded from
The highest benefit cost
ratio (2.20) was noted from the combination P
2H3
and the lowest
(1.59)
was obtained
from P31-10
. From economic point of view, it is apparent from the above results that the
combination of P
2H3
was more profitable rest of the combination.
