تعريف powdery mildew في الإنجليزية الإنجليزية القاموس.
One of several fungi that can cause severe damage to grape crops; also called oidium
Fungal disease of grape wines which, unlike most fungal diseases, thrives in dry climates Also called oidium, it occurs in most of the wine regions of the world It can be controlled by timely application of sulfur dust directly onto the vine leaves and immature fruit New fungicides have been introduced in recent years which greatly improve a vine's recovery from severe attacks
any of various fungi of the genus Erysiphe producing powdery conidia on the host surface
is a fungus that appears as a white fuzzy coating on the upper leaves Plants susceptible: beebalm, calendula, coriander, germander, lemon balm, tarragon, and yarrow Foliage will eventually wilt, brown, and drop If detected early, it can be eliminated by spraying with a solution of 1tsp baking soda to 1 quart water See Remedies for Plants for more solutions