Abstract:
A pot experiment was conducted in the net house of Sher-e-Bangla Agricultural University,
Dhaka, Bangladesh, during the period from December 2015 to April 2016 to study the role of
modified chitosan on rice (BRRI dhan29) cultivation in saline soil. BRRI dhan29 was used as the
test crop in this experiment. The experiment consists of 2 factors i.e. salinity and modified
chitosan. Different doses of modified chitosan (C
0
-0 g modified chitosan/pot, C
-20 g modified
chitosan/pot and C
2
-40 g modified chitosan/pot). Different levels of salinity were (S
- normal
soil, S
1
- 4dSm
-1
, S
2
- 8dsm
-1
and S
3
- 12dsm
-1
). The experiments was laid out in randomized
complete block design (RCBD) with 3 replications. There were 12 treatment combinations.
Results revealed that salinity had significant effect on the yield and yield parameters. The highest
value of effective tillers/hill, plant height, panicle length, number of filled grain/panicle, 1000
grain weight, grain yield and straw yield were observed when the level of salinity was S
(normal
soil) and the lowest value was observed when the level of salinity was S
3
1
(12 dsm
). The Yield
contributing characters and yields were significantly affected by application of modified
chitosan. The highest effective tillers/hill (23.91), plant height (60.24 cm), panicle length
(19.37cm), 1000 grain wt. (14.83g), grain yield (38.08g) and straw yield (47.08g) were found
from C
(20 g modified chitosan/pot). On the other hand in most cases lowest values were
obtained from C
1
(40 g modified chitosan/pot). The highest values of effective tillers/hill (49.00),
plant height (78.687), panicle length (27.87), 1000 seed wt.(21.33), and grain yield (85.00),
recorded from (S
2
0
C
- normal soil + 20 g modified chitosan/pot). The lowest values were
observed from (S
3
1
C
2
-12dsm
-1
+ 40 g modified chitosan/pot). Our results concluded that
application of modified chitosan (20 g modified chitosan/pot) could play significant role to
increase the grain yield of rice and could improve the salt tolerance in rice.
-1
0
0
Description:
A Thesis
submitted to the Department of Soil Science
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree
of
MASTER OF SCIENCE (MS)
IN
SOIL SCIENCE
SEMESTER: JULY-DECEMBER, 2015
