The viticulture is to a considerable extent from Pesticides in the form of chemical or biological agents (fungicides). Without the regular use of these "repellents", high-quality wine production would not be possible. This applies to both conventional and organic viticulture.
PIWIs are the real heroes among the grape varieties. You don't need these constant "repellants" because they are natural robust against fungal diseases are.
They are sustainable and environmentally friendly as they require very little organic crop protection and plant care products to produce excellent wines with an exciting range of aromas. This directly protects the environment because very little pesticide is released into the environment.
The indirect contributions to environmental protection of PIWI grape varieties are also considerable. The reduced need for pesticides saves resources that would otherwise have to be used to produce the fungicides. In addition, energy and CO₂ emissions are saved which would be consumed in the production of pesticides and the application of these substances in the vineyard. The result is a reduction in the amount of machinery and fuel used in the vineyards, which benefits both winemakers and environmentally conscious consumers.
Winegrowing without chemicals and without soil pollution is not a dream. But PIWI reality!