Root-knot nematodes

Caused by: Meloidogyne spp.
Problem Category: Nematode
Symptoms: Forked, distorted or stunted taproots; reduced stand; reduced yield
Comments: Root-knot nematodes are most damaging to carrot; nematodes are microscopic and not visible to the naked eye
Management: Leaving land to fallow when not planting can be effective at reducing nematode numbers; solarizing soil for 4-6 week period to a depth of 6 inches can temporarily reduce nematode populations; new carrot varieties are currently being developed that are resistant to nematodes