downy mildew

Thân thiện

A farmer inspects grape leaves for signs of downy mildew.

Definition

1. Noun:
   • A plant disease: "downy mildew" refers to a type of plant disease caused by certain parasitic fungi, primarily from the family Peronosporaceae.
   • The causative fungus: The term can also refer to the fungus itself that causes this disease, characterized by a downy, fuzzy growth on the undersides of leaves.

Usage Examples

• Noun:
  • The vineyard was severely affected by downy mildew this season.
  • Gardeners must watch for the white, downy mildew on their cucumber plants.

Advanced Usage

• "downy mildew of [plant name]": A common construction specifying the host plant.
  • Downy mildew of grapevine is a major concern for viticulturists worldwide.

Variants and Related Words

• Mildew (n): A broader term for various types of fungal growth on plants or materials.
• Peronosporaceae (n): The scientific family name for many downy mildew-causing fungi.

Synonyms

• Fungal blight: A general term for plant diseases caused by fungi.
• Oomycete infection: A more technical term, as downy mildews are caused by oomycetes, which are fungus-like organisms.

Related Phrases

• Resistant to downy mildew: Describing plant varieties that are not easily infected.

  • This hybrid squash is resistant to downy mildew.

• Downy mildew control: Refers to methods of managing the disease.

  • Effective downy mildew control often involves both cultural practices and fungicides.

Học thuật

Noun

1. any of various fungi of the family Peronosporaceae parasitic on e.g. grapes and potatoes and melons

Từ đồng nghĩa

• false mildew