How do I fix shy and irregular bearing in old Dasheri mango trees?

Dasheri is a classic alternate (biennial) bearer and you cannot fully remove the cycle, only soften it. The on year exhausts reserves, so the tree skips next year. Practices that help: in the heavy on year, do some fruit thinning and good nutrition so the tree is not totally drained; after harvest give a recovery dose of nutrients and irrigation so it can build flowering shoots; maintain regular hopper and anthracnose control so leaves stay healthy. Light pruning to keep the canopy open and productive helps. Paclobutrazol soil application is used by some growers to promote flowering in the off year, but it is a plant growth regulator with carryover and residue concerns, so use it only at recommended dose and timing under KVK guidance and never on export-bound orchards without checking residue limits. Healthy, well-fed trees swing less.