russet scab

Thân thiện

A farmer examines a potato plant showing signs of russet scab.

Definition

Noun: - A plant disease affecting potatoes: "Russet scab" is a specific disease of potato tubers caused by the fungus-like organism Rhizoctonia solani. It is characterized by rough, brownish, and often cracked patches on the potato skin, which can resemble russeting. This disease primarily affects the tuber's appearance and marketability rather than causing severe internal rot.

Usage Examples

• Noun:
  • The farmer identified the rough patches on the potatoes as russet scab.
  • Crop rotation is a common method to help control russet scab in potato fields.
  • The presence of russet scab can reduce the market value of the harvested potatoes.

Advanced Usage

• As a specific agricultural pathology term: The term is used precisely within agronomy and plant pathology to describe this particular symptom and disease complex, often in technical literature or diagnostic reports.
  • The diagnostic report confirmed russet scab, recommending specific soil treatments.

Variants and Related Words

• Rhizoctonia canker (n): Another name for diseases caused by , which can refer to stem and root symptoms on various plants, not just potato tubers.
• Black scurf (n): A related symptom of the same pathogen () on potatoes, appearing as hard, black, crust-like structures on the tuber surface, often occurring alongside russet scab.

Synonyms

• Rhizoctonia disease of potatoes: The formal descriptive name for the condition.
• Superficial scab: A general term that may be used to describe similar surface blemish diseases on tubers.

Related Phrases / Terms

• Tuber disease: A broad category of diseases affecting potato tubers, which includes russet scab.
• Soil-borne pathogen: Describes the origin of the organism that causes the disease.

Học thuật

Noun

1. rhizoctinia disease of potatoes

Từ đồng nghĩa

• little potato
• rosette
• stem canker