Abstract:
The experiment was conducted at the research field of Sher-e-Bangla Agricultural University,
Dhaka from June to December 2019 to investigate the comparative performance of organic and
inorganic phosphorus and to find out the best combination for better performances of modern wet
season rice varieties. The experiment consisted two factors, Factor A: Two rice varieties viz: V
1
=
BRRI dhan71 and V
2
= BRRI dhan72; and Factor B = Five nutrient treatments viz: T
1
= N
85
+ P
0
+
K
55
+ S
12
+ Zn
1.2
; T
2
= T
1
+ P
15
(from TSP),
T
3
= T
1
+ P
15 (from DAP),
T
4
= T
1
+ P
15
(from TSP)
+ Poultry
manure 3.7 t ha
-1
, and T
5
= T
1
+P
15 (from DAP)
+ Poultry manure 3.7 t ha
-1
. The experiment was laid
out in split plot design with three replications. Uniform and standard management practices were
followed for all the treatments and varieties. The treatments, varieties and their interactions had
significant effects on growth parameters, yield and yield components of .BRRI dhan72 produced
the statistically higher mean grain yield (6.30 t ha
-1
) compared to BRRI dhan71 (5.36 t ha
).
Among the treatments, the highest mean grain yield (6.60 t ha
-1
) was obtained in T
5
followed by
T
4
(6.15 t ha
-1
) and the lowest mean grain yield (4.65 t ha
-1
) was found in T
1
.and BRRI dhan72
produced the highest grain yield (7.10 t ha
-1
) in combination with the treatment T
5
that was
followed by BRRI dhan72 with T
4
(6.40 t ha
-1
) and the lowest grain yield (3.80 t ha
) was found
in BRRI dhan71 with T
1
. The highest grain yield (6.10 t ha
-1
) of BRRI dhan71 was attained along
with T
5
. Growth parameters, yield components, straw yield and harvest index of both the varieties
were followed the similar trend of grain yield. Both the rice varieties BRRI dhan72 and BRRI
dhan71 gave their highest performances when applied fertilizers of the treatment T
5
. Therefore,it
could be concluded that the treatment T
5
(N
85
+ P
15(from DAP)+
K
55
+S
12
+Zn
1.5
+ Poultry manure 3.7
tha
-1
) would be recommended for T. Aman rice to attain higher yield and better performance.
-1
-1
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
SEMESTER: JULY- DECEMBER, 2020
