In your opinion ? (Several answers possible)
To encourage the sap to flow towards the fruit-bearing buds, favouring a good balance of vigour and productivity.
To give the vine its shape, avoiding tightly packed foliage and encouraging photosynthesis.
To control vine development, rejuvenating plants on a regular basis.
To harmonise the visual appearance of the slopes for aesthetic reasons.
Pruning is the most fundamental of all the vineyard tasks and is done by hand.