Units and Conversions
In most of Europe, yield is measured in hectoliter per hectare, i.e., by the volume of wine. In most of the New World, yield is measured in ton per acres (TPA), i.e., by mass of grapes. Measures in ton or kilogram per hectare are also seen.
Due to differing winemaking procedures for different styles of wine, and different properties of different grape varieties, the amount of wine produced from a unit mass of grapes varies. It is therefore not possible to make an exact conversion between these units. Representative figures for the amount of grapes needed for 100 l (1 hl) of wine are 160 kg for white wine, 130 kg for red wine, and 140 kg for a mixture of red and white wine.
Thus:
- for white wine, 100 hl/ha ≈ 16,000 kg/ha (16 ton/ha) = 6.5 ton/acre.
- 1 ton/acre = 2470 kg/ha ≈ 15 hl/ha
- for red wine, 100 hl/ha ≈ 13,000 kg/ha (13 ton/ha) = 5.3 ton/acre.
- 1 ton/acre = 2470 kg/ha ≈ 19 hl/ha
- for mixed wine, 100 hl/ha ≈ 14,000 kg/ha (14 ton/ha) = 5.7 ton/acre.
- 1 ton/acre = 2470 kg/ha ≈ 17.5 hl/ha
Read more about this topic: Yield (wine)
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