Most heavily pruned fruit plant is

The most heavily pruned fruit plant is Ber.
The pruning is done to regulate the flowering and fruiting of the plants. To maintain an optimum balance between vegetative and reproductive growth of the trees. To ensure penetration of sunlight and air inside the canopy of the plants.
Pruning is done during the hot and dry season when the tree sheds leaves and enters into dormancy. In Tamil Nadu, the trees are pruned from January - April, in Maharashtra and Gujarat pruning must be completed by the April end and in Haryana by the May end.