While this method may have been an unwittingly preventive measurement against the advance of phylloxera, it does provide much control for the vineyard manager to limit yields and increase potential quality in the wine grapes.

Sandy soils can help limit the vigor and yields.

In recent times, pruning and canopy management have started to limit yields more effectively.

The AOC requirements limit yields to 368 gallons per acre, which is nearly half the yields allowed in Bordeaux.

The local Llicorella soil is of particularly poor quality, composed of quartz and slate, which also helps to limit yields.

According to Oz Clarke, the quality of Verdicchio wines has improved since the later half of the 20th century as producers limit yields even beyond DOC regulation to produce fuller flavored grapes that can better balance its high acidity.

The estate limits yields to 45 hectoliters per hectare and grapes are picked and sorted by hand.

All members (currently 18) are bound to abide by a charter which covers all aspects of wine making and sales (e.g. density of new plantings, limiting yields and selling dates).