Root-Knot Nematodes

Root-knot nematodes Common name Root-knot nematodes Eel worms Causal agent Root-knot nematodes are parasitic nematodes belonging to the genus Meloidogyne. The nematodes affect the roots by forming knots or galls, decreasing nutrients and water absorption. Scientific name Meloidogyne spp. Symptoms & Signs The larva of the nematode feeds on the plant roots, which causes the formation of large galls or knots on the roots. This decreases the absorption of nutrients and water, as well as the yield and quality of the crops. The plants display stunted growth, wilt, and die early. Additionally, the leaves may also show symptoms of chlorosis. Time of concern Throughout the year Common hosts Peppers Carrots Cucumbers Lettuce Onion Peanut Cotton