What practice is done in the vineyard to help produce fresh, fruity white wines in Spain?

Harvesting at night or early morning is a practice that significantly contributes to the production of fresh, fruity white wines in Spain. This timing helps maintain the grapes' fresh acidity and temperature. Grapes harvested in cooler temperatures retain their aromas and prevent premature fermentation, which can occur due to the heat of the day. This cooler handling ensures that the grapes arrive at the winery in optimum condition, preserving the desired characteristics of freshness and fruitiness.

Other practices, such as fermentation in oak barrels, typically impart more complexity and bouquet rather than emphasizing freshness, while using overripe grapes would lead to wines that are heavier and less vibrant. Flood irrigation, while addressing water supply for vineyard health, does not specifically relate to achieving the fresh, fruity style sought in many white wines produced in regions like Spain. This context highlights the importance of timing in the harvesting process to achieve the fresh and fruity profile desired in the wines.