Abstract:
The experiment was conducted during October 2019 to April 2020 to improve yield
and seed quality of soybean through integrated nutrient management. The variety BARI
Soybean 5 was used as the test crop. In this experiment, the treatment consisted of
fourteen different levels of integrated nutrient management viz. T
= no chemical
fertilizer, no organic manure (control), T
2
= cow dung (10 t ha
-1
), T
= vermi compost (5
t ha
-1
), T
4
= recommended dose of fertilizer (RDF) ( Urea 50 kg ha
3
-1
1
,TSP 150 kg ha
,
MoP 100 kg ha
-1
, Gypsum 80 kg ha
-1
, Boron 8 kg ha
-1
) T
= trichoderma compost (2 t
ha
-1
), T
6
= biochar (10 t ha
-1
), T
7
= cowdung (10 t ha
-1
5
) +50% RDF,T
= cowdung(10 t
ha
-1
) + 75% RDF, T
9
= vermi compost (5 t ha
-1
) + 50% RDF, T
10
8
= vermi compost (5 t
ha
-1
) + 75% RDF, T
11
= trichoderma compost (2 t ha
-1
) + 50% RDF, T
= trichoderma
compost (2 t ha
-1
) + 75% RDF, T
13
= biochar (10 t ha
-1
)+ 50% RDF, T
= biochar (10 t
ha
-1
) + 75% RDF. The experiment was laid out in a Randomized Complete Block
Design (RCBD) with three replications. Different levels of integrated nutrient
management showed statistically significant variation on all parameters of soybean.
The tallest plant (37.3, 50.67, 52.53 and 52.93 cm at 30, 50, 70 days after sowing and at
harvest, respectively) was recorded from Biochar( 10 t ha
-1
)+50%RDF. The maximum
number of leaves plant
-1
, pod length (cm), number of pods plant
-1
12
14
, number of seeds
pod
-1
and thousand seed weight (g) as well as the highest seed yield (1333 kg ha
),
stover yield(181 kg ha
-1
), biological yield (1513 kg ha
-1
), was observed from Biochar(
10 t ha
-1
)+ 50% RDF. On the other hand, the lowest seed yield (639 kg ha
) was
observed from T
0
(control) treatment. The highest harvest index was recorded from T
(biochar 10 t ha
-1
) treatment . The highest germination 94.33% was obtained in T
(Biochar 10 t ha
-1
+ 50% RDF) treatment.. The highest germination index, coefficient of
velocity, energy of emergence, shoot length, root length, vigour index, viability was
recorded in T
13
(Biochar 10 t ha
-1
+ 50% RDF) treatment.. Therefore Biochar(10 t ha
)
+ 50% RDF may be possible to use in reducing inorganic fertilizer which will increase
seed quality with lower production cost without significant yield reduction of soybean.
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 (M.S.)
IN
SEED TECHNOLOGY