Noun
any of various fungi of the genus Erysiphe producing powdery conidia on the host surface
Source: WordNetIt has a good efficacy against a wide range of powdery mildew diseases as well as black spot. Source: Internet
Millerandage and coulure can also pose problems, along with powdery mildew attacking the thin skin of the grapes. Source: Internet
Remove any leaves infected with rust, powdery mildew or black spot from the ground so the spores don’t overwinter in the soil. Source: Internet
Unfortunately, powdery mildew can survive from one season to the next. Source: Internet
PMR indicates some degree of powdery mildew resistance; afila types, also called semi-leafless, have clusters of tendrils instead of leaves. citation Unless otherwise noted these are so called dwarf varieties which grow to an average height of about 1m. Source: Internet