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University of Tennessee
Peanut mottle is caused by the peanut mottle virus (PMV). It was first observed in 1971 and is the most common virus disease of soybeans in Georgia. The virus is seedborne in peanuts, but not in soybeans. Aphids can carry the virus from infected peanut fields or from other legumes in nearby fields. Volunteer peanut plants remaining in soybean fields are a source of inoculum for soybean infection.
A mosaic of dark green and yellow areas is produced in older leaves. Ring patterns of yellow patches develop on the third and fourth leaves following infection. Infected leaves pucker and curl downward at the margins.