Plant-parasitic nematodes are a major pest on potatoes in Florida. Root-knot, sting, and stubby-root nematodes are the primary problems. Sampling is an important component of confirming nematode problems in a field. Nematode management relies heavily on chemical control (nematicides), but crop rotation and soil culture are important considerations as well. This 12-page fact sheet about nematode management in potatoes was written by Zane J. Grabau and J.W. Noling and published by the UF Department of Entomology and Nematology.
http://edis.ifas.ufl.edu/ng029