Against powdery mildew, downy mildew, black rot
Uncinula necator - one of the most dangerous grapevine diseases. Excellent response to UV-C treatment: 85-100% efficacy.
Plasmopara viticola - causes severe damage in wet weather. UV-C combination with fungicides recommended.
Guignardia bidwellii - destroys fruits and leaves. UV-C helps prevent spread.