SALINITY TOLERANCE IMPROVEMENT OF RED CABBAGE USING POTASSIUM SILICATE AND POTASSIUM NITRATE

Abstract

A pot experiment was conducted at the Horticultural Farm of Sher-e-Bangla Agricultural University, Dhaka, during the period from October 2021 to March 2022 to enhance the salinity tolerance of red cabbage (Rubi King) using potassium silicate and potassium nitrate. The treatments consisted of 3 different salinity levels viz., S 0

= Control (± 0.8 dSm -1 ) EC, S 1 = 4 dSm -1 EC and S 2 = 8 dSm -1 EC and application of potassium silicate and potassium nitrate viz., C 0 = Control (Water), C 1 = 3 mM potassium silicate, C 2 = 4 mM potassium nitrate. The experiment was setup in a two factor Complete Randomized Design (CRD) with three replications. Data on different growth, biochemical parameters and yield contributing characters of red cabbage were recorded. It was found that the head weight of red cabbage gradually decreased by the increase of salinity levels and this reduction rate was decreased by foliar application of potassium nitrate. Significant variation was recorded on yield per plant (g) of red cabbage due to different level of salinity. The maximum yield was recorded from S 0 (807.70 g) whereas the lowest yield (621.80 g) was by resulted from S 2 . The maximum yield (734.90 g) was recorded from C 2 whereas the lowest yield (646.80 g) was by C 0 . The maximum yield (867.00 g) was obtained from S 0 , while the lowest yield (590.80 g) was recorded from treatment combination of S 2 . It can be concluded that, potassium nitrate was more efficient for salinity tolerance improvement of red cabbage.

C 2 C 0