Abstract:
An experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University,
Dhaka, Bangladesh during the period from October, 2019 to March, 2020 to study the influence
of organic manure and potassium on yield and seed quality of soybean. The experiment was laid
out in Split plot Design (2 factor) replicated with three times. For this study, factor A- V
1
: BARI
Soybean 6 and V
2
: BINA Soybean 1 and factor B- T
1
ii
: Trichoderma (2 t/ha); T
2
: Trichoderma (2
t/ha) + 70 kg/ha K; T
3
: Trichoderma (2 t/ha) + 90 kg/ha K, T
4
: Biochar (10 t/ha), T
5
: Biochar (10
t/ha) + 70 kg/ha K, T
6
: Biochar (10 t/ha) + 90 kg/ha K, T
7
: Recommended dose of fertilizer (50,
150, 100, 50 & 8 kg/ha of urea, TSP, MoP, Gypsum and boric acid, respectively) and T
0
: Control.
The yield attributing characteristics (i.e. plant height (52.18 cm), number of leaves/plant (13.80
leaves), number of pods/plant (49.88 pods), pod length (3.14 cm), seeds per pod (2.50 seeds), 1000
seeds weight (123.5 g), seed yield (2.23 t/ha), stover yield (3.96 t/ha), biological yield (6.19 t/ha)
and harvest index (35.90 %)) and seed quality (seed viability (71.88 %) and seed germination
(85.00 %)) were highest and the timing of 1
st
flowering (30.88 days) and timing of pod maturity
(51.63 days) were lowest for BARI Soybean 6. The yield attributing characteristics (i.e. plant
height (54.60 cm), number of leaves/plant (15.22 leaves), number of pods/plant (61.50 pods), pod
length (3.36 cm), seeds per pod (3.50 seeds), 1000 seeds weight (137.9 g), seed yield (2.55 t/ha),
stover yield (4.41 t/ha), biological yield (6.96 t/ha) and harvest index (36.65 %)) and seed quality
(seed viability (78.50 %) and seed germination (93.00 %)) were highest and the timing of 1
flowering (28.50 days) and timing of pod maturity (49.50 days) were lowest for Biochar (10 t/ha)
+ 70 kg/ha K treatment. Again, BARI Soybean6 along with Biochar (10 t/ha) + 70 kg/ha K showed
the best performance in the yield attributing characteristics (i.e. plant height (55.89 cm), number
of leaves/plant (15.47 leaves), number of pods/plant (66.00 pods), pod length (3.45 cm), seeds per
pod (4.00 seeds), 1000 seeds weight (138.8 g), seed yield (2.63 t/ha), stover yield (4.49 t/ha) and
biological yield (7.12 t/ha)) and seed quality (seed viability (84.00 %) and seed germination (94.00
%)) and the timing of 1
st
flowering (28.00 days) and timing of pod maturity (49.00 days) were
lowest. The combined effect of BARI Soybean 6 with Biochar + 70 kg/ha K showed the best
performance in case of increasing soybean growth, yield and seed quality compared to other
treatments.
Description:
A Thesis
submitted to the Institute of Seed Technology,
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
SEED TECHNOLOGY