Talk:Horticulture/Powdery Mildew

Powdery mildew in grape
Erysiphe necator (or Uncinula necator) causes powdery mildew in grapes. It produces common odors such as 1-octen-3-one and (Z)-1,5-octadien-3-one.

Powdery mildew in onions
The fungus causing powdery mildew in onions is Leveillula taurica (known as Oidiopsis tauricaby its anamorph) - also attacking the artichoke.