Definition

Noun A plant disease, specifically a type of blight, that causes the browning and subsequent falling of a plant's leaves. It is a general term for various diseases that manifest primarily through the rapid discoloration and death of leaf tissue.

Usage

"Leaf blight" is used as a countable noun, often modified by the specific plant affected (e.g., tomato leaf blight) or the pathogen causing it (e.g., bacterial leaf blight). It describes the visible symptom and the disease itself.

Examples

• The wet summer weather created perfect conditions for leaf blight in the potato crop.
• Early detection of leaf blight is crucial to save the tomato plants.
• This fungicide is effective against several common types of leaf blight.

Advanced Usage

• "to be stricken with leaf blight": To be severely affected by the disease.
  • The entire orchard was stricken with a severe leaf blight.
• "an outbreak of leaf blight": A sudden occurrence and spread of the disease.
  • An outbreak of leaf blight devastated the community garden.

Variants and Related Words

• Blight (n.): The broader category of plant diseases characterized by rapid and extensive damage, which includes leaf blight, stem blight, and flower blight.
• Specific Blight Names: These are compound terms where "blight" is modified, but they name distinct diseases.
  • Early blight: A common fungal disease of tomatoes and potatoes.
  • Late blight: A devastating disease, famously causing the Irish Potato Famine.
  • Fire blight: A bacterial disease affecting plants in the rose family.

Synonyms

• Leaf spot: (While often used interchangeably by gardeners, "leaf spot" typically refers to smaller, more localized lesions, whereas "blight" implies more rapid and widespread damage.)
• Foliar disease: A more technical term for any disease affecting plant leaves.

Related Phrases

• "to control leaf blight": To manage or limit the spread of the disease.
  • Proper spacing and watering can help control leaf blight.
• "resistant to leaf blight": Describes a plant variety that is not easily infected by the disease.
  • When planting, choose varieties that are resistant to leaf blight.

Noun

1. any blight causing a browning and falling of the leaves of a plant