Abstract:
An experiment was conducted at research field of Sher-e-Bangla Agricultural
University, Sher-e-Bangla Nagar, Dhaka during the period from March to June, 2016
to find out the effect of GA
and nitrogen (N) on growth, yield and protein content of
mungbean. The experiment consisted of two factors: Factor A: Three levels of GA
3
viz.G
0
: control (no GA
3
); G
1
: 50 ppm GA
ii
3
; G
2
: 100 ppm GA
and Factor B: Four
levels of nitrogen (N). viz.N
0
: Control (no urea), N
1
3
: 22 kg urea ha
-1
: 44 kg urea
ha
-1
, N
3
: 66 kg urea ha
-1
. There were 12 treatment combinations. The experiment was
laid out in Randomized Complete Block Design (RCBD) with three replications. Data
on different growth and yield contributing characters and yield were recorded to find
out the optimum levels of GA
3
, N
2
and nitrogen (N) on mungbean production. Due to GA
application maximum number of pods plant
-1
(107.52), seeds pod
-1
(9.97), chlorophyll
content (52.75 %), seed yield (2.16 t/ha), stover yield (1.05 t/ha), nitrogen content
(4.11 %) and protein content (25.72 %) were recorded from G
1
(50 ppm GA
)
treatment while minimum from G
(control) treatment. Due to nitrogen application
maximum number of pods plant
-1
0
(108.94), seeds pod
-1
(10.14), 1000 seed weight
(47.22 g), seed yield (2.16 t/ha), stover yield (1.08 t/ha), nitrogen content (4.16 %),
protein content (26.00 %) were observed from N
2
(44 kg urea ha
-1
) treatment while the
minimum were observed from N
(control) treatment. In the case of interaction effect
maximum number of pods plant
0
-1
(132.27), seeds pod
-1
(11.30), 1000 seed weight
(47.92 g), seed yield (2.38 t/ha), stover yield (1.28 t/ha), nitrogen content (4.20 %)
and protein content (26.25 %) were recorded from G
1
N
2
(50 ppm GA
with 44 kg urea
ha
-1
) treatment combination while the minimum from G
0
N
0
3
(control) treatment
combination. The overall results suggest that 50 ppm GA
3
along with 44 kg urea ha
can be applied to obtain optimum mungbean yield, nitrogen and protein contents
under the agro-climatic condition of SAU.
