Soybeans were scouted at the R2 growth stage and necrotic lesions and vein discoloration were observed in random areas across the field.
This issue was confirmed by the NC State Plant, Disease and Insect clinic to be Soybean Vein Necrosis Virus (SVNV). Symptoms associated with SVNV can look similar to other soybean diseases such as brown spot, cercospora leaf blight, and even herbicide injury. Symptomology can include randomly distributed irregular yellow spots ranging in size, necrotic lesions, vein discoloration, and yellowing of the underside of leaves. Currently, there are no economically feasible remedial measures for SVNV.