IMPROVING YIELD OF SALT TOLERANT RICE VARIETIES THROUGH SILICON APPLICATION
Climate change creates hazards like cyclone, sea level rise, and storm surge have been increasing the salinityintrusion problem in many folds of Bangladesh. High level of the salinity affectedin Rabi season therefore, current field experiment was carried out at saline prone area,Sodor, Satkhira under natural salinity condition during Rabi season 2017-2018. The experiment was carried out with two varieties namely, Binadhan-10, BRRIdhan67 and four levels of silicon with control S0: 0 kg ha-1, S1: 5 kg ha-1, S2: 10 kg ha-1 and S3: 15 kg ha-1. The experiment was laid out in a split plot design with three replications. The recommended fertilizer doses applied for the experiment were 80 kg N ha-1, 15 kg P ha-1, 50 kg K ha-1 and 20 kg S ha-1 and silicon as basal dose. Application of silicon had significant effect on plant height, number of effective tiller m-2, length of panicle, total number of spikelets panicle-1, thousand grain weights, number of filled spikelets panicle-1, grain yield and straw yield.It seems that the crop responded to the application of silicon @ 5-15 kg Si ha-1 and best dose was reported @ 15 kg ha-1 silicon followed by 10 kg ha-1. Results suggest that an application of silicon along with N, P, K, S, Zn, might be necessary to ensure satisfactory yield of rice in saline prone area under natural salinity condition.
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