To up pot is to move a plant into a larger container so its roots have more room and fresh growing medium. For a mango, choose a container with effective drainage and avoid a very large jump that leaves unused medium wet for long periods. Preserve the original planting depth and handle the root ball carefully. Watering needs may change after the move, so check both the old root ball and the surrounding new mix rather than judging only the surface.
Up-pot is the hyphenated form of up pot, meaning to transplant a container-grown plant into a larger pot. Both spellings describe the same container-growing operation rather than a separate propagation technique. Mangoes need a stable container, drainage holes, and a growing medium that holds useful moisture without staying saturated. Repot in suitable growing weather where possible, protect disturbed roots from drying, and reassess irrigation while the tree establishes in the new volume.