overcrop

Vidal Blanc, or Vidal (Ugni Blanc x Rayon D'Or), is a white grape variety that belongs to the group of highly productive hybrids that tend to overcrop, which results in reduced growth and lower fruit and wine quality.

"Dry-farmed land vines are very self-regulating, and the fruit is often superior from these vineyards because natural water availability frequently causes a good balance: If the grower overcrops, the vines will shut down and turn to raisins.