Abstract:
The experiment was conducted in the Farm of Sher-e-Bangla Agricultural University,
Dhaka, Bangladesh during the period from November 2014 - April 2015 to study the effect
of different levels of salicylic acid (SA) on growth and yield of BRRI hybrid dhan3.The
experiment included six levels of SA viz. T
1
= 0, T
2
= 200, T
3
= 400, T
4
= 600, T
= 800 and
T
= 1000 µM. The experiment was laid out in a randomized complete block design with
three replications. The results revealed that, Lower dose of SA has a positive role on plant
height of rice and higher doses up to 1000 µM have negative effect. The highest oven dry
matter weight (2.7 t/ha) was found in T
6
treatment having foliar spray of SA at 400 µM
and the lowest (2.0 t/ha) was found in, T
3
. The highest number of effective tillers per hill
(14) was found in the treatment T
6
5
due to the application of 1000 µM SA and the highest
1000 grain weight (34.8g) was found with the same treatment. The highest number of
grain per panicle (156) was found in the T
treatment having foliar application of 1000 µM
SA and it was statistically similar with the treatments T
6
4
and T
. The application of
different levels of SA had a significant effect on number of stem borer affected plants. The
lowest number of affected panicle per plot (3) was found in the treatment T
5
. The
maximum grain yield was found in the treatment T
having 1000 µM SA and it was
statistically identical with the treatment T
5
6
having 800 µM SA. On the other hand,
minimum grain yield was found in the control treatment T
which was similar to the
treatments T
2
and T
3
1
having 200 µM and 400 µM SA, respectively. So, it can be
concluded that salicylic acid may be applied as foliar application to rice crops for better
growth and yield.
5
6
Description:
A Thesis
Submitted to the Department of Soil Science
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, 2015
