The present investigation on salicylic acid delayed ripening of mango fruits during storage in wooden crates has sixteen treatment combinations, which had been replicated three times and was laid out in Completely Randomized Design. After harvesting of mango fruits, it was stored in wooden crates by post-harvest application of salicylic acid at 0.1, 0.5 and 1.0 g/l doses. The analysis of specific gravity, pectin content, pectin methyl esterase enzyme activity, peroxidase enzyme activity, beta carotene and TSS was done at different intervals. The data revealed that maximum specific gravity (1.25) was found in variety Dashahari at 15 days storage by 0.5 g/l salicylic acid application. Highest pectin content (1.88 %) was noticed in variety Langra at 15 days storage period by 0.5 g/l salicylic acid treatment. Highest pectin methyl esterase enzyme activity (0.94 units/g) was recorded in the variety Dashahari at 5 days ambient storage period by 0.1 g/l salicylic acid application. Highest peroxidase enzyme activity (458.88 units/g) was reported in variety Dashahari at 20 days ambient storage period by 0.5 g/l salicylic acid application. Maximum beta carotene content (3037.19 ?g/100g) was reported in variety Dashahari at 20 days ambient storage period by 0.5 g/l salicylic acid application. Maximum TSS content (29.00 Brix0) was reported in the variety Chausa at 20 days ambient storage period by 0.5 g/l salicylic acid treatment. Thus the present study indicated that post-harvest application of salicylic acid is effective for delayed ripening and enhanced quality of mango fruits.