Definition

Noun: A specific plant disease affecting English walnut trees (Juglans regia), characterized by bacterial infection that damages leaves, shoots, and developing nuts.

Usage

This term is used specifically in horticulture, agriculture, and botany to refer to the condition caused by the bacterium Xanthomonas arboricola pv. juglandis. * The entire orchard was lost to walnut blight. * Controlling walnut blight requires careful management and often the use of bactericides. * A primary symptom of walnut blight is black lesions on the young nutlets.

Advanced Usage

• The term is often used in a technical context when discussing tree pathology and nut crop management.
• It can be part of compound nouns in specialized literature (e.g., blight management, blight symptoms), but the core term remains "walnut blight."

Variants and Related Words

• Blight (n): A general term for any plant disease that causes withering and death of parts without rotting. "Walnut blight" is a specific type of blight.
• Blight (v): To affect with blight. "The wet spring weather can blight the walnut crop."

Synonyms

• Bacterial blight of walnut (full technical name)
• infection (scientific causal description)

Different Meanings

• As a noun, "walnut blight" refers only to this specific tree disease. The word "blight" alone has broader meanings, including any cause of impairment or destruction.

Related Phrases/Idioms

• Fight/blight the blight: A phrase sometimes used in agricultural contexts, playing on the verb form, meaning to combat the disease. "Growers must fight the blight to save the harvest."

Noun

1. a disease of English walnut trees