Symptoms:

• Plants infected with root-lesion nematodes do not typically have clear diagnostic symptoms.
• Root-lesion nematodes may kill seedlings and impair stand establishment.
• Older, infected plants may be stunted and appear in scattered patches in a field. Areas with disease may be weedy and have reduced stand density and yield.
• Infected plants may have dark, brown-black lesions on the surface of roots. Fine, fibrous roots and Rhizobia nodules may be absent due to nematode feeding, resulting in impaired nutrient uptake.