Black rot of mustard is caused by

Black rot of crucifer is caused by

Black rot of crucifers is caused by a

Black rot of crucifers is caused by a

Assertion : Before breeding is undertaken, it is important to know about the causative organism and the mode of transmission . Reason : Black rot of crucifers is caused by fungi.

Fin rot of fish is caused by

Fin rot of fish is caused by

Fin rot of fish is caused by