Q785
Causal agent of Ring spot of potato is
A.
Pseudomonas fluroscence
B.
Ralstonia solancearum
C.
Clavibacter michiganensis
AnswerD.
All of these
Answer: Option C
Solution
Answer: Option C
Solution:
The causal agent of Ring spot of potato is Clavibacter michiganensis.Ring spot causes vascular wilt in the above ground parts of the potato plant, with discolouration and loss of texture/consistency noted in infected tubers.
It leads to Losses of up to 50% of the crop have been noted in severe infections.