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grapes break

This measure in the vineyard serves primarily to increase the quality of healthy grapes and as a side effect to reduce the yield, It is especially recommended for a dense and compact grape structure, which is the cause of bunch rot (Sour rot) can be. When dense grapes is the interior is poorly ventilated, so after rainfall (Rain, dew) is too slow dehydration and the moisture for rotten pathogens gives ideal conditions. In addition, the high pressure in the middle section causes the squeezing of berries and thus the prerequisite for the penetration of bacteria and mushrooms, Foul-infested berries lead to flavor wine errors, Grapes with compact opposite lockerbeerigem Berry growth is particularly endangered, these include the Pinotsorten. Sauvignon Blanc. Elbling and Riesling, Therefore, various measures have been developed to loosen the grapes. These include the Defoliation the grape zone, as well as the grapes division and the grape break.

Grape break - steps A, B, C and D

  • A) Initial situation: Compaction zone in center of the grape
  • B) Twisting the lower and upper halves of grapes against each other
  • C) Stem break above the compression zone
  • D) loosened, halved grape

Grape quarrying does not work out as it did with classic yield reduction thin out (Green reading) to promote the grape compactness, but causes just the opposite. And he has the advantage of less effort compared to the Efficacy similar grape division. The manually carried out measure takes place between closing of grapes and veraison (Maturity onset). But only the compact grapes are treated. The grape is fixed with one hand in the upper and lower area and the two halves twisted against each other. Above the compression zone there is a clearly audible breakage of the stem framework; there is a breaking point, so to speak. The upper loosely built grape part remains on the floor, the lower compact part is separated. As a result, berries move down from the upper half, which further reduces berry contacts. Certain grape varieties such. B. Riesling are particularly suitable for grape structure (pictures above).

Pictures: The German Wine Magazine - Grape Harvest - Molitor D., Evers D. (2012)

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