Viticulture - Vine diseases

5 important questions on Viticulture - Vine diseases

What are the main vine diseases?

  • FUNGUSES: More common in oceanic climates (too rainy during the vegetative period and the leaves and grapes con be affected by rot) --> Grey mold, downy mildew and powdery mildew
  • PESTS: More common in all climates --> Phylloxera, nematodes, moths and sharpshooters

What do winemakers do to battle the diseases?

  1. Synthetic chemicals
  2. Fungicides
  3. Pesticides

What is organic farming?

  • Synthetic chemicals are prohibited
  • Natural and healthier product and methods
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What are the 3 main things that can be done for an organic farming?

  1. BORDEAUX MIXURE: blend composed of copper sulfate and lime
  2. PHEROMONES: Winegrowers use small capsules that release synthetic female pheromones in their vineyard. This creates confusion in the males and they are unable to mate
  3. BIRD BOXES: Bird boxes attract birds that eat and thereby reduce the number of sharpshooters

What are natural wines?

  • Wines that have less sulfites
  • Without added sulfites
  • Other winemakers use sulfites before bottling to avoid oxidation in bottles and to keep the malic acid --> Natural wines don't use it for the oxidation
  • Oxigen is goig to modify the molecules that we have in the wine, the aromatic ones and the alcohol
  • Full-bodied red wine you don't need to put sulfites for the oxidation because they have a lot of tannins

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