"Genus Tylenchus" refers to a type of parasitic nematode worms that commonly infect plant roots and cause significant damage to crops. Synonyms for "Genus Tylenchus" include "root knot nematodes" and "soil-penetrating nematodes." Other variations of the term include "root lesion nematodes" and "stem and bulb nematodes." These types of nematodes are commonly found in warm, moist soil and can easily spread through the movement of soil, water or plant material. Effective management of plant-parasitic nematodes includes cultural practices such as crop rotation, planting resistant cultivars, and soil steaming, as well as the use of chemical nematicides in some cases.