Effects of soil drenching with paclobutrazol and foliar sprays of Cycocel and Alar on yield and quality of fruits were studied in nine year old mango trees. Fruit yield was enhanced considerably by paclobutrazol at 2.5 or 5.0 g per tree, but at 10.0 g per tree, it reduced yield. Alar at 3,000 mg T1 slightly enhanced yield, but reduced T.S.S. Higher doses of paclobutrazol reduced fruit size, adversely affected T.S.S. and the sugar/acid ratio, and delayed fruit maturity and ripening. Other physico-chemical characters of fruits were not affected. Soil drenching with paclobutrazol at 2.5 g per tree during November and March in alternate years seems recommendable for regulating tree size and enhancing yield in young bearing mango trees.