Abstract:
ABSTRACT
Salinity is one of the most devastating abiotic stress factors which caused reduction in
plant growth and development. But gypsum can mitigate the adverse effect of salt
stress. So, the experiment was conducted to assess the effect of Gypsum to mitigate
the saline effect of Tomato at the research field of Sher-e-Bangla Agricultural
University (SAU), Dhaka-1207, Bangladesh during October 2019 to March 2020. The
two factors experiment was laid out in Randomized Complete Block Design (RCBD)
with 3 replications. The factors were: Factor A: three levels of salinity viz. S
-4
and S
3
-8 dSm
-1
and factor B; the different concentration of gypsum viz. C
-5
and C
-10 mM. The treatments were applied at 30, 45, 70 days after transplanting
(DAT). The highest value of morphological parameters and yield was observed at
control level of salinity S
3
1
(dSm
-1
). At 75 DAT the highest plant height (79.67 cm),
number of flower per plants, fruits per plant and yield per plant was respectively
(48.0, 46.3, 3.11 kg). The lowest value was observed at S
in all the cases. The yield
of tomato was gradually decreasing with the increasing levels of salinity.The highest
number of flower per plants (52.0), fruits per plant (49.8), and yield per plant (3.31
kg) was recorded at 5 mM Ca
2+
3
treatment. This result showed that, the salt stress
reduced the morphological parameters and yield (kg) with the increment of salinity
and the exogenous Ca
2+
application can effectively mitigate the deleterious effect of
salt stress in tomato.
1
1
-0, S
-0, C
2
2
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
MASTERS OF SCIENCE
IN
AGROFORESTRY AND ENVIRONMENTAL SCIENCE
SEMESTER: JULY-DECEMBER, 2020
