Abstract:
The present piece of work was carried out at the Research Farm of Sher-e-Bangla
Agricultural University, Dhaka, Bangladesh during the period from November 2019
to April 2020 in Boro season to investigate the morpho-physiological attributes and
yield response of boro rice to boron and zinc. The experiment consisted of two
factors, and followed Randomized Complete Block Design. Factor A: Boro rice
varieties viz (3); V
1
: BRRI dhan29, V
2
: BRRI dhan50, V
: BRRI dhan55, Factor B:
Different level of boron and zinc fertilizers viz (4); F
0
3
: Control, F
: Boron @ 15 kg
ha
-1
, F
2
: Zinc @ 20 kg ha
-1
and F
3
: Boron @ 15 kg ha
-1
1
+ Zinc@20 kg ha
. Data on
different growths, yield contributing characters and yield were recorded to find out
the response of boro rice varieties to different doses of zinc and boron fertilizers and
different parameters of boro rice showed significant variations. Among the varieties,
V
(BRRI dhan29) treatment perform the best and recorded the maximum number of
effective tillers hill
1
-1
(16.09), panicle length (26.72 cm), filled grains panicle
(148.45), number of total grains panicle
-1
(166.19), 1000 grains weight (26.24 g),
grain yield (5.92 t ha
-1
), straw yield (7.08 t ha
-1
), biological yield (12.99 t ha
) and
harvest index (45.36 %). In case of different doses of zinc and boron fertilizers
applications, the maximum, number of effective tillers hill
-1
(17.72), panicle length
(26.99 cm), filled grains panicle
-1
(150.75), total grains panicle
-1
(167.78), 1000 grains
weight (28.39 g), grain yield (5.69 t ha
-1
), straw yield (6.54 t ha
-1
), biological yield
(12.22 t ha
-1
) and harvest index (46.38 %) were recorded in F
(Boron @ 15 kg/ha+
Zinc @ 20 kg/ha) treatment. In respect of treatment combinations V
3
1
F
performed the
best and recorded the highest grain yield (6.86 t ha
-1
). Thus BRRI dhan29 along with
application of Boron @ 15 kg ha
-1
+ Zinc @ 20 kg ha
-1
considered as a suitable
treatment combination for boro rice production.
3
-1
-1
-1
Description:
A Thesis
Submitted to the Department of Agricultural Botany,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE
IN
AGRICULTURAL BOTANY
SEMESTER: JANUARY-JUNE, 2021
