What is potato ringspot? Corky ringspot of potatoes is caused by a disease called tobacco rattle virus. This virus is spread primarily by stubby root nematodes, microscopic worms that feed on plant roots.
Planetagarden
What is potato ringspot? Corky ringspot of potatoes is caused by a disease called tobacco rattle virus. This virus is spread primarily by stubby root nematodes, microscopic worms that feed on plant roots.
