Orchards for growing apples in Lebanon occupy 19% of the fruit growing area of the country, and it is the main fruit crop of the mountain areas. The varieties introduced to Lebanon since the 50's are the “Golden Delicious” and the “Starking Delicious”. At the time, all the production was sold immediately after harvest. Currently, the market demands impose a delayed sale after storage. Several diseases have appeared in storage such as the Bitter pit and scald. This has led to a loss of fruit quality and subsequently the loss of markets. Our research seeks to improve the quality of the fruits so that they become consistent with market standards while using foliar fertilizers. An analysis of the main components directly influencing the quality of the apple was conducted (malic acid, brix levels, content of calcium, nitrogen phosphorus, potassium) with the effect of these fertilizers on the Apple caliber as the criterion base in marketing. Experiments have proven that the 4 foliar fertilizers have improved the quality of fruits and have maintained their taste, sensory and physical qualities even after 4 months of storage. The economic impact of these results was assessed by estimating the expected added value that the grower will receive. The "Golden Delicious" and "Starking Delicious" orchards received an added value of 40% and 27% respectively, with a net increase in demand on the production. The Minimum Wage growth in Lebanon is 175 Euros.