Abstract:
An experiment was conducted in the Horticulture farm of Sher-e-Bangla
Agricultural University, Dhaka, Bangladesh during the period from October 2019
to January 2020 to study the influence of seedling age and NAA on growth and
yield of Chinese cabbage. The experiment consisted of two factors, such as Factor
A: Seedling age (3
levels) as- A
1
: 15 days old seedlings, A
2
: 25 days old seedlings,
A
3
: 35 days old seedlings and Factor B: Different levels of NAA (4 levels) as N
0
: 0
ppm (control), N
1
: 40 ppm, N
2
: 80 ppm and N
3
: 120 ppm. The
two factorial
experiment was laid out in Randomized Complete Block Design (RCBD) with three
replications. Data on different yield components and yield of Chinese cabbage were
recorded. Statistically significant variation was recorded from all recorded
characters due to the different levels of naphthalene acetic acid (NAA). Seedling
age showed significant differences in all recorded characters. Seedling age and
different levels of NAA influenced significantly on most of the parameters.
Considerable highest values were recorded in head
weight (1.69 kg) and gross yield
(77.01 t/ha) from 25 days of seedling (A
2
) and the lowest were recorded from A
3
and A
1
. Considerable
highest values were recorded in head
weight (1.53 kg) and
gross yield (75.72 t/ha) from 80 ppm (N
2
) followed by 120 ppm (N
3
) and 40 ppm
(N
1
) of NAA and the lowest value was recorded from control treatments. Interaction
effect between different seedling age and NAA also
showed significant differences
and the considerable yield and yield contributing characters were recorded from the
treatment combination
A
2
N
3
, while the treatment combination A
3
N
0
gave the lowest
value. The highest gross return (Tk.
926,200), net return (Tk. 644,765) and benefit
cost ratio (3.29) were obtained from the
treatment combination A
2
N
3
and the
lowest
(Tk. 727,980, 457,139 and 2.69 respectively) were from the treatment
combination
A
1
N
0
.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
In Partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
HORTICULTURE
