Meloidogyne hapla
Northern Root-knot nematode

  • Damage to Potatoes
  • Biology  Juveniles penetrate host roots where they establish a feeding site, developing into swollen females (cysts). The female is usually pear-shaped, with a fragile white cuticle, and may be up to 2 mm in diameter. 
  • Ecology  Root-Knot nematodes are distributed world-wide.
  • Symptoms  Symptoms of Meloidogyne hapla damage in potatoes include dark specks and reduced potato quality.
  • Damage to other crops.  Meloidogyne species are also damaging pests of tomato and corn.
  • Control.  Good control of some species has been obtained with chemicals- with fumigants generally giving better control than granular nematicides.