Abstract:
The experiment was conducted at the research field of Sher-e-Bangla Agricultural
University, Dhaka from November 2020 to May 2021 to investigate the effects of
potassium and sulphur with vermicompost and to find out the best combination for
better performances of Boro rice (BRRI dhan81). The experiment consisted two
factors, Factor A: four potassium and sulphur fertilizer treatments viz: F
: Control (no
fertilizer), F
1
: 70 kg K ha
-1
+ 10 kg S ha
-1
, F
2
: 100 kg K ha
-1
+ 20 kg S ha
: 130
kg K ha
-1
+ 30 kg S ha
-1
and Factor B: three vermicompost treatments viz: V
: Control
(no vermicompost), V
1
: 2 t vermicompost ha
-1
and V
2
0
-1
and F
: 4 t vermicompost ha
. The
experiment was laid out in randomized complete block design with three replications.
Data were recorded on growth parameters, yield and yield components. The
treatments had significant effects on most of the parameters. Results indicated that F
,
among the potassium and sulphur treatments and V
, among the vermicompost
treatments performed best in case of most growth and yield related characteristics like
plant height, total number of tillers hill
-1
2
, number of panicles hill
-1
, panicle length,
number of spikelets panicle
-1
, number of filled spikelets panicle
-1
, number of unfilled
spikelets panicle
-1
, 1000 grain weight, grain yield and straw yield. In case of treatment
combinations the total number of tillers hill
-1
(17.9) and panicles hill
(16.7) were
received from F
2
V
2
. Again, F
2
V
treatment combination also performed the best result
in case of the panicle length (23.25 cm), number of filled spikelets panicle
2
(126.41),
total number of spikelets panicle
-1
-1
(147.50) and 1000-grain weight (20.94 g). F
treatment combination produced the highest grain and straw yield (6.60 t ha
and 8.74
t ha
-1
respectively). On the contrary, control treatments performed the lowest in all the
growth and yield related parameters. Finally, the treatment combination F
which is
100 kg ha
-1
potassium
and 20 kg ha
-1
sulphur with 4 t ha
-1
vermicompost performed
the best for increasing the yield of Boro rice and improved the nutrient status of postharvest
soil
of AEZ
28.
Description:
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the
requirements for the degree of
MASTER OF SCIENCE
IN
SOIL SCIENCE
