Definition of root-knot in US English:



  • A disease of cultivated flowers and vegetables caused by eelworm infestation, resulting in galls on the roots.

    The eelworms belong to the genus Meloidogyne, class Nematoda

    • ‘It is spread not only by grafting, but also by mechanical means and root-knot nematodes.’
    • ‘The research team discovered a comprehensive spectrum of parasitism genes in root-knot and cyst nematodes.’
    • ‘Some soils, especially the warm, sandy loams that peas do well in, are often infested with root-knot nematodes.’
    • ‘In U.S. cotton, the major species comprise root-knot, reniform, lance, and sting nematodes.’
    • ‘The targeted pests were chickweed, prickly lettuce, and root-knot nematode.’