Vidyalelo
Agriculture · Q922

Plant Pathology

Graduate and Post Graduate · Agriculture · question 922

Q922

Causal organism of potato scab is

A.
Synchytrium endobioticum
B.
Spongospora scabies
C.
Streptomyces scabies
Answer
D.
Ralstonia solonacearum

Answer: Option C

Solution

Answer: Option C
Solution:
The causal organism of potato scabs is Streptomyces scabies.
Streptomyces scabies is a Gram-positive bacterial pathogen that causes common scab disease in several crops, particularly the potato.
It is a soil-borne pathogen, a very devastating scab pathogen, and difficult to manage in the field.