REMEDIATION OF SALT STRESS ON GROWTH, YIELD AND NUTRIENT CONTENT OF BINA DHAN 10 AND BRRI DHAN 29 BY DIFFERENT FERTILIZATION METHOD OF TSP

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.