Abstract:
ABSTRACT
The present study was carried out at the roof of second floor of Academic Building,
Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh
during the period from June to September 2019 to investigate the performance of okra
with different doses of nitrogen (N) in rooftop garden. Four levels of N viz. N
=
Control (No N), N
1
= 120 kg N ha
-1
, N
2
= 150 kg N ha
-1
and N
3
= 180 kg N ha
. The
experiment was laid out in a Completely Randomized Design (CRD) with three
replications. Data on different growth, yield contributing parameters and yield were
recorded and analyzed statistically. The recorded data on different growth yield and
yield contributing parameters were significantly influenced by different N doses.
Regarding growth parameters, the highest plant height (123.20 cm), leaf length (30.17
cm) and stem base diameter (3.25) were recorded from the treatment N
whereas
control treatment gave the lowest values. Again, the highest leaf breadth (37.49 cm),
number of leaves plant
-1
(62.07), number of branches plant
-1
(9.87), number of nodes
plant
-1
(24.20), number of internodes plant
-1
(23.87), fruit petiole length (5.76 cm),
fruit length (13.20 cm) and fruit diameter (2.11 cm), number of fruits plant
(24.10),
single fruit weight (16.59 g), yield plot
-1
(3.80 kg) and yield ha
-1
(13.89 t) were found
in N
2
treatment. The lowest single fruit weight (15.14 g), number of fruits plant
(16.30), yield plot
-1
(2.53 kg) and yield ha
-1
(9.21 t) were recorded in control
treatment. Regarding quality parameters of soil moisture and light, the highest soil
moisture (22.13%) and soil temperature (16.20°C) were found from the treatment N
but the highest light intensity (32.54 klux) was found from N
whereas the lowest soil
moisture (20.55%), soil temperature (15.82°C) and light intensity (30.46 klux) were
recorded from the control treatment. From the above result, it can be concluded that
application of 150 kg N ha
-1
2
may ensure higher yield of okra in rooftop garden.
3
-1
-1
0
-1
3
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
AGROFORESTRY AND ENVIRONMENTAL SCIENCE
SEMESTER: JANUARY- JUNE, 2020
