Ring nematode injury
(Macroposthonia spp.)



Ring nematode appears to be one of the most common nematode species affecting peanuts in the North Carolina-Virginia production area. Plants appear stunted and the foliage may be light green or slightly yellowed where high populations of this nematode occur. Peanuts on affected plants will appear smaller than normal even at maturity. The surface of pods will have a russetted appearance as a result of the nematodes feeding during pod development. Severe infestations of this nematode often cause symptoms similar to sting nematode damage to peanut pods. The ring nematode, however, does not appear to be as destructive to peanut roots as does the feeding injury caused by the sting nematode.