Abstract:
The experiment was conducted at Sher-e-Bangla Agricultural University,
Dhaka-1207 during the period from March 2019 to June 2019 to observe the
effect of bio-fertilizer on yield and seed quality of blackgram with combination
of nitrogen and phosphorus. The experiment consisted of two factors viz.
Factor A: two bio-fertilizer levels; (i) B
= Without bio-fertilizer (control) and
(ii) B
1
ii
0
= With bio-fertilizer and Factor B: Five N+P levels; F
= Control
(without N+P fertilizer), F
= 40% lower than recommended doses of N+P
fertilizer, F
2
1
= 20% lower than recommended doses of N+P fertilizer, F
=
recommended doses of N+P fertilizer, F
4
=
20% higher than recommended
doses of N+P fertilizer and F
5
=
40% higher than recommended doses of N+P
fertilizer. The experiment was conducted in split-plot design with three
replications. A significant variation among the treatments was found while biofertilizer
application
and
different
levels
of N+P fertilizers applied in different
combinations. The maximum number of pods plant
-1
(38.52), pod length (4.22
cm), number of seeds pod
-1
(6.50), 1000-seed weight (44.05 g), seed yield (1.76
t ha
-1
), stover yield (3.40 t ha
-1
) and biological yield (5.16 t ha
-1
) were obtained
from the treatment combination of B
1
F
but the highest harvest index (34.28%)
was obtained from the treatment combination of B
3
1
F
whereas the lowest was
from the treatment combination of B
0
F
0
2
. Considering seed quality parameters,
all the parameters were significantly affected by combined effect of biofertilizer
and N+P treatments. The highest percent germination (94.70%) and
shoot length (25.40 cm) were obtained from the treatment combination of B
but the highest root length (10.86 cm) and dry weight plant
-1
(0.15 g) and also
lowest electrical conductivity (7.83) were obtained from the treatment
combination of B
1
F
compared to all other treatment combinations. As a result,
it can be accomplished that application of bio-fertilizer and N+P treatment
combination B
1
F
3
4
is very much effective for higher yield and better seed quality
of blackgram.
Description:
A Thesis
Submitted to the Institute of Seed Technology
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
SEED TECHNOLOGY
