Abstract:
A pot experiment was conducted at the Net I louse and Laboratory of Soil Science
Division. Bangladesh Agricultural Research Institute (BARI). Joydehpur. Gazipur (luring
September to December 2007 to study the effect of nitrogen. molybdenum. boron and
Brad yrhizobium
inoculant on growth. nodulation. yield, yield contributing characters,
nitrogen uptake of blackgram. The variety. BARI Mash-3 and
I3radyrhizohiwn
(BARI RVm-301) were used in the present experiment. There were twelve treatment
combinations viz. T
1
: Control (non-inoculated and non-fertilized control). T
2
: PKMo, T
3:
PKB. T
4
: Brad vrhizohi urn
inoculant. Tj: N, T
(
,: PKMo +
Brad_vrhizobiuin
Inoculant. 1',: PKB
-f
Bradyrhizahium
lnoculanL Tg: NPKMo,
Bradyrhizohiurn
Inoculatit and T
inoculant
TC)
: NPKB. T
jI):
PKMoB. T
3
PKMoB i-
12
: NPICMoB laid out in a Complete Randomized Block
Design with 3 (three) replication. Nitrogen
ha* muriate of potash (@ 42 kg K ha
1
P. 50 kg N ha
1
, triple super phosphate
Cip
22 kg P
, boron.@ I kg B ha' and molybdenum ( I kg Mo
ha4
were applied as per treatments of the experiment as recommended levels. Gypsum @ 20
kg S ha
S
' and zinc sulphate @
5 kg ha
1
were applied as basal in all pots except in control pot. After
30.
45 and 60 days of sowing. 2 plants were uprooted from each pot to study
nodulation, dry matter production and plant growth. At maturity, yield and yield contributing
charactcrs were recorded.
Bradyrhizohi urn
inoculation increased significantly the number of
nodules. nodule weight, root and shoot length. seed and stover yield, yield attributes, nitrogen
and protein content of blackgram compared to non-inoculated control.
Bradyrhizohiurn
inoculation in presence of Mo and B recorded the highest nodule number and nodule weight,
and also seed and stover yield.
Rradyrhizohiwfl
inoculation alone or in presence of Mo or
boron also recorded higher nodulation over other treatmenL combinations.
Brad yrhizohi urn
inoculation was better than nitrogen in almost all the parameters studied. Molybdenum and
boron performed better results. This result indicated that the use of
liradyrhizohiurn
inoculants with molybdenum and boron appeared to be an effective method for successful
blackgram production.
Description:
A Thesis
Submitted to the l)epartmcnt of Soil Science,
Sher-e-Bangla Agricultural University, IThaka
in partial fulfillment of requirement for the degree of
MASTER OF SCIENCE (M.S)
IN
SOIL SCIENCE
Semester: July—December 2008