The use of saline water in the production of vegetables is one of the main challenges of producers, since salt stress causes a decrease in crop production and yield. The objective of this study was to evaluate the growth of radish crop cultivated under salinity levels in irrigation water and foliar fertilization. The treatments were obtained from the combination of four electrical conductivities of irrigation water (0.5, 1.5, 3.0, 4.5 dS m-¹) and two forms of foliar fertilization (with foliar fertilization and without foliar fertilization). The experimental design used was completely randomized in a 4 x 2 factorial scheme, with four replications and one plant per plot, totaling 32 experimental units. Radish plants were evaluated for leaf number, plant height, leaf area, relative chlorophyll index, root mass and shoot dry mass. It was found that increasing salinity levels affect the growth and development of radish plants, with significant reduction in leaf emission, leaf area, plant height, SPAD index and phytomass accumulation and that leaf fertilization did not mitigate the effects caused by salinity in irrigation water.