Why train and prune young trees? Because a young tree that is not pruned will become a shapeless tree; and a shapeless tree does not fill its space in the orchard and we cannot maximize light interception and light distribution.
Growing fruit means trapping (intercepting) as much sunlight as possible and converting it into a high quality product that we can sell.
To shape a fruit tree and give it a good structure we must train and prune young trees. The best shapes to intercept and distribute sunlight are the Christmas tree‑type (Central Leader) and V‑type (Tatura Trellis).
Any pruning during the early years is dwarfing, the trees cannot fill their space quickly and it delays fruiting. Trees that are trained well and pruned minimally, grow fast and come into production soon.
Fruiting reduces tree growth. If we allow fruit trees to crop heavily too soon, the trees will be in full production before they have filled their allotted space.
Training and pruning young trees allows us to regulate tree growth and fruitfulness so that we can maximize the production potential of an orchard.