Banana (Musa spp) is considered as one of the most important fruit crops in Egypt, where it occupy an area of 27.5 thousand ha.  Field experiments on banana cv. Grand Nain for two consecutive seasons (2016 and 2017) were conducted in Horticulture Research Station located in El-Kanter Elkharia, Kaluobia Governorate. The main objective of this study was to investigate the possibility of reducing the mineral fertilizers applied to the banana crop by using compost and potassium silicate treatments. Three rates of compost (15, 20 and 25 kg per mate) were applied with 50% of the recommended rate of mineral fertilizers along with or without potassium silicate at a rate of 60 ml per mate. These treatments were compared with recommended rates of mineral fertilizers mixed with and without potassium silicate. Obtained results showed that application of compost led to enhance all studied parameters and recorded highly significant differences particularly under the treatments combined with potassium silicate and 50% of the recommended rate of mineral fertilizers. The highest level of compost with potassium silicate treatment recorded the uppermost values of growth, yield and quality of banana fruits. Moreover, the same treatment recorded significant increments in total sugar and T.S.S% in fruits as compared with the recommended dose of mineral fertilizers.