Abstract:
An experiment was carried out the net house of Agro-Environmental Chemistry,
Department of Agricultural Chemistry, SAU, Dhaka during the period from
December 2016 to June 2017 to evaluate the remediation of salt stress on growth,
yield and nutrient content of BINA dhan 10 and BRRI dhan 29 by different
fertilization method of TSP. This experiment consisted of two variety viz. (i) V
(BINA dhan 10) and (ii) V
(BRRI dhan 29) and five types of TSP application
methods viz. (i) T
0
2
(Control; 0 TSP), (ii) T
(⅓ foliar and ⅔ soil application of
TSP), (iii) T
2
ii
1
(⅔ foliar and ⅓ soil application of TSP), (iv) T
(Total foliar
application of TSP) and (v) T
(Total soil application of TSP) under four different
salinity levels viz. S
0
(0 dS m
4
-1
), S
1
(3 dS m
-1
), S
2
(6 dS m
-1
) and S
3
). The
experiment was laid out in a complete Randomized Design (CRD) with three
replications. Considering varietal performance, at 0, 3, 6 and 9 dS m
salinity
levels respectively the highest shoot dry weight plant
-1
(22.36, 20.54, 15.97 and
17.19 g), number of effective tillers plant
-1
(7.27, 6.87, 6.67 and 7.00), number of
filled grains panicle
-1
(94.40, 62.53, 86.00 and 79.40), grain weight plant
(12.95,
10.21, 11.37 and 10.97 g) and straw weight plant
-1
(27.75, 25.39, 23.20 and 22.16
g) were found from the variety, V
(BINA dhan 10). Regarding the effect of
different fertilization method of TSP, the treatment T
1
(⅔ foliar and ⅓ soil
application of TSP) showed the best performance on shoot dry weight plant
2
(23.77, 20.68, 22.27 and 21.29 g), number of effective tillers plant
(7.67, 7.00,
7.00, 7.00 and 7.00), number of filled grains panicle
-1
(99.00, 96.67, 87.83 and
88.34), grain weight plant
-1
(14.57, 14.10, 13.26 and 13.93 g) and straw weight
plant
-1
(30.24, 26.74, 24.36 and 23.76 g) at 0, 3, 6 and 9 dS m
3
(9 dS m
-1
salinity levels
respectively. Combinations of variety and different TSP application method the
highest shoot dry weight plant
-1
(26.76, 27.60, 22.81 and 23.81 g), number of
effective tillers plant
-1
-1
(8.33, 7.33, 7.33 and 7.67), number of filled grains panicle
(81.00, 75.67, 61.67 and 52.67), and grain weight plant
-1
(14.72, 15.77, 13.42 and
15.08 g) at 0, 3, 6 and 9 dS m
-1
salinity levels respectively were found from the
treatment combination of V
1
T
. Nutrient content in grain and straw affected by
different application methods of TSP, significant variation was observed on P and
S content in grain and straw but Na, Ca and K content in grain and straw was not
significant.
