4. Frost protection


Once vines are fully dormant they can tolerate quite severe frost, but temperatures below 0˚C will cause damage once buds have burst. Frost protection through appropriate site selection and use of passive techniques (e.g. cold air drainage, pruning height, delayed pruning, and soil condition) are less damaging to the environment and less costly to implement than the use of heaters, fans/windmills, polymer coatings or water sprinkling.

Best Practice
A.

Use passive protection techniques, for example site selection, removing barriers, removing covercrops.

Minimum Standard
B.

If using active protection techniques, record and monitor site specific conditions on which they are used.