Wine may only be produced from grapes grown on approved vineyards that have been determined to be suitable for viticulture. Particularly for the approval of a new area not previously used for viticulture, certain criteria must be met. In addition to compliance with the relevant EU regulations, this concerns above all the climatic conditions and the suitability of the soil. The planned establishment of a vineyard or the planting of vines in compliance with all laws, observance of all criteria and the necessary measures are described under the keyword vine establishment plan.
The suitability of a vineyard for viticulture can be measured by objective criteria. Important criteria are climate and weather, which are of eminent importance for the thriving of the vines in the course of the vegetation cycle. The exposition (direction of sunlight) or orientation of the vine rows plays an extremely important role, whereby a slope with a corresponding inclination positively enhances the effect. In warmth-favoured, dry areas, south-east to east-facing slopes are optimal, in climatic border areas with heat deficits but sufficient precipitation, south to south-west exposures are optimal. According to research in Geisenheim, the optimal temperature for vine growth is between 25 and 28 °C. Towards the end of the ripening full stop, it should be between 15 and 20 °C to achieve optimal physiologische Reifephysiological...
The glossary is a monumental achievement and one of the most important contributions to wine knowledge. Of all the encyclopaedias I use on the subject of wine, it is by far the most important. That was the case ten years ago and it hasn't changed since.Andreas Essl