SHERRY - Growing environment and Grape growing - Vineyard management

5 important questions on SHERRY - Growing environment and Grape growing - Vineyard management

How is the trellising and mechanisation in the sherry area

  • In the process of being transformed to accommodate mechanisation
  • principal training system repalcement cane system = vara y pulgar
  • cordon training and spur pruning increased > better for mechanisation
  • VSP trellising > open canopy > easy for mechanisation
    • but shading needed agains sunburn
    • air circulation > reduces fungal diseases
  • Within-row spacing tight (<1m), in between-row wider to allow tractors
  • maximum yield 80 hl/ha, but more common 60-70 hl/ha

Where are most vineyards planted in Jerez

On gentle slopes (10-15%) with abariza soil

How is water from the winter rains kept in the vineyards in Jerez

  • By digging troughs and gullies
    • = aserpia
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What about diseases in vineyards in Jerez

  • Hot and dry
    • low rate of fungal diseases
    • and moderating influence Atlantic Ocean > frost no issue
  • Mildew in spring due to warm humid weather after rain
  • VSP > air circulation > reduces fungal diseases
  • European grapevine moth issue > pheromone traps used

How and when does the harvest take place in the Sherry area

  • About 60% by machines, at night/early morning
  • first week of August (inland vineyards) - second week of September (coastal)
  • as early as possible > rot undesirable, especially for the biologically ages wines
  • usually
    • 12% potential alcohol
    • 5 gr/L total acidity
    • 3.3-3.5 pH
  • Palomino looses acidity quickly in final ripening stage
  • PX and Moscatel harvested slightly later to have a higher concentration of sugar in the grapes > drying process will be easier and quicker

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