Background: Soil salinity is one of the major environmental factors affecting agricultural production, while the introduction of certain amendments mitigates the negative impact of salinity on plant growth. The objective of the present study was to evaluate the interactive effect of some soil amendments (i.e. gypsum, compost, and compost tea) on salt affected soil as well as to investigate the possible effects of foliar application of nano-silica (0, 1 and 2 mmol L-1) on alleviating the adverse effects of salinity and the possible mechanisms by which nan-silica could increase faba bean tolerance to salinity. The experiment was conducted during the winter season of 2018/2019 in Sakha Agric. Research Station Farm, North Delta, Kafr El-Sheikh Governorate, Egypt.