Abstract:
The experiment was conducted at the farm of Sher-e-Bangla Agricultural University,
Dhaka, Bangladesh during the period from January 2018 to May, 2018 to study the effect
of Rhizobium inoculation, nitrogen and phosphorus application on the growth, yield and
nodulation of soybean (glycine max L.). The experiment comprised of three factors viz.
Factor A: Rhizobium inoculation; Factors B: Levels of Nitrogen (3 levels)- viz. 0, 25 and
50 kg N ha
-1
denoted as N
0,
N
25
and N
; Factor C: Levels of Phosphorus (2 levels) – viz.
0 and 40 kg P ha
-1
denoted as P
0
and P
50
40
P
0
: 0 kg P ha
-1
. The three factors experiment was
laid out in Randomized Complete Block Design (RCBD) with three replications. The
highest plant height (51.64 cm
and 68.18 cm), number of leaves (17.13 and 24.17) and
branches plant
-1
(4.07
and 10.50) at 30 DAS and 60 DAS respectively were also observed
in RI
1
N
2
P
1
treatment combination. The highest weight of dry shoot (2.93 gm plant
), dry
root (0.66 gm plant
-1
) and total plant weight (11.88 gm plant
-1
) were respectively in
RI
1
N
2
P
treatment. The application Rhizobium inoculant along with N and P showed
positive effect on the number of pods plant
1
-1
, number of seed pod
-1
, number of seeds
plant
-1
, 100 seed weight (gm), seed wt. plant
-1
(gm) grain yield (t ha
-1
) and stover yield
(t ha
-1
). The maximum number of nodule plant
-1
(49.64), size of effective nodule (3.60
mm in diameter) were observed in RI
1
N
2
P
treatment. The highest seed yield ((2.06 t
ha
-1
) was observed from RI
1
N
2
P
1
1
treatment which was statistically similar with RI
treatment. It may be concluded that application of 25 kg N ha
-1
& 90 kg P ha
along with
rhizobium inoculation can be more beneficial for the farmers to get maximum yield.
-1
-1
1
N
1
P
1
Description:
A Thesis
Submitted to the Department of Soil Science
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
SOIL SCIENCE
Semester: January - June, 2018
