Dagger nematodes parasitize plants. They cause economic damage and death of host crops through feeding on the roots and by spreading viral mosaic and wilting diseases, but field studies have shown that some control measures targeting reduction in the population of dagger nematodes can be effective in controlling viral diseases in susceptible crops. This 7-page fact sheet was written by William K. Heve, William T. Crow, and Tesfamarian Mengistu, and published by the UF Department of Entomology and Nematology, June 2015.
http://edis.ifas.ufl.edu/in1097