Abstract:
Salt stress is a severe limiting factor for rice production worldwide. So a pot
experiment was conducted at the research field of the Department of Agroforestry and
Environmental Science, Sher-e-Bangla Agricultural University, Dhaka during the
period from February 2021 to April 2021 to find out the effect of calcium in
mitigation of salt stress in BRRI dhan 28 (inbreed) with nine treatments in
combination with three doses of NaCl (0 mM, 50 mM and 100 mM) and three doses
of CaCl
2
(0 mM, 2.5 mM and 5 mM) in completely randomized design with three
replications. Salt stress drastically damaged morpho-physiological attributes and
growth performance of rice in dose dependent manner. In contrast use of 2.5 mM
CaCl
2
under salt stress had positive impact on plant height, relative growth rate,
number of leaves per plant, length of flag leaf, width of flag leaf, fresh weight of
plant, dry weight of plant, relative water content (RWC) and SPAD value at 25, 40
and 55 at days after sowing (DAS) under both level of salt stresses. But addition of 5
mM CaCl
2
showed good result under 50 mM NaCl stress only. So, addition of 2.5
mM CaCl
2
in fertilization process might be a solution for rice production under salt
stress.
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
AGROFORESTRY AND ENVIRONMENTAL SCIENCE
