Wine defect; see under Black Fracture.
The wine defects white fracture (grey fracture), black fracture and partly also brown f racture are closely related in terms of causes and effects. During the vegetation period, the vine also absorbs various metallic trace elements through the roots. These are aluminium, lead, iron, copper, silver and zinc. During winemaking, these substances, known as primary, natural metals, are greatly reduced. However, improper or...
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