Great fruit from the vineyard is essential in making good wine. Whilst there are many factors that go into producing good fruit, the right balance between vine plant vigour and grape yield is critical. Selection of the most appropriate trellis design is necessary in creating and managing the right “canopy”.
There are many different trellis systems employed around the world designed each created to take into account the local climate and soil conditions. Some designs favour higher yields of grapes whereas others specifically seek to maximise quality instead of quantity. Designs can also include specific shapes to minimise wind or sun damage in extreme micro climates and even different harvesting methods.
A trellis system normally consists of strong wooden (or steel) supports and many wines running the length of the vine row. The objective is to provide a structure for training and supporting the vine through its young fragile young shoot stage up to and including harvest time when the cordons may be heavily loaded with fruit.
One type of trellis rarely fits all conditions although, quite often, specific areas and sub regions conform to a local standard. Quite often different vineyards within a region use modified variants of the same trellis system combined with different winter pruning methods to obtain achieve an alternative taste to their resultant wine.
There are more than 35 different formal trellis designs around the world, including famous names just as Guyot, Lenz Moser, V or T trellis, Geneva Double Curtain, etc