Abstract:
A field experiment was conducted at the Horticulture Farm of Sher-e-Bangla
Agricultural University, Dhaka 1207, Bangladesh, during October 2021 to February
2022 to evaluate the effect of nitrogen and gibberellic acid (GA
3
) on growth and yield
performance of cauliflower (white mountain variety). The experiment consisted of
two factors. Factor A: different concentrations of nitrogen (N) as N
0
= Control (No
nitrogen), N
1
= 150 kg ha
-1
, N
2
= 200 kg ha
-1
, N
3
= 250 kg ha
-1
and factor B: different
levels of gibberellic acid (GA
3
) as G
0
= Control (No GA
3
), G
1
= 180 ppm, G
2
= 200
ppm. The experiment was laid out in a Randomized Complete Block Design with
three replications. Significant variation was found for all parameters of cauliflower
due to different levels of nitrogen. The tallest plant at harvest (64.12 cm), highest
stem diameter (2.39 cm), curd diameter (23.27 cm), dry matter content (12.94 %) and
marketable yield per plant (0.95 kg) was found in N
3
(250 kg N/ha). On the other
hand, tallest plant at harvest (60.02 cm), highest stem diameter (2.55 cm), curd
diameter (21.69 cm), dry matter content (12.06 %) and marketable yield per plant
(0.91 kg) was recorded from G
2
(200 ppm GA
3
). In their combine effect, N
3
(250
kg ha
-1
N with 200 ppm of GA
3
) provide the highest dry matter content (13.77 %) and
marketable yield ha
-1
(36.24 t). Considering the economic aspect, application of 250
kg ha
-1
N with 200 ppm of GA
3
in cauliflower production gave the highest economic
return (BCR 2.19).
Description:
A Thesis
Submitted to Department of Entomology,
Faculty of Agriculture.
Sher-e-Bangla Agricultural University,
Dhaka-
In partial fulfillment of the requirements for the degree of
MASTERS OF SCIENCE (MS)
IN
DEPARTMENT OF HORTICULTURE
