Leaf samples collected from 1,883 peanut plants in 158 fields in 14 counties during July-August, 1990 and 1991, were tested for peanut mottle (PMV), peanut stripe (PStV), peanut stunt (PSV), and tomato spotted wilt (TSWV) viruses by sap inoculations onto indicator plants and/or by enzyme-linked immunosorbent assay (ELISA). Of 889 plants showing virus-like symptoms, 58% were infected with TSWV alone or mixed with PMV or PSV, 36% with PMV alone or mixed with TSWV or PSV, and 5% with PSV alone or mixed with TSWV or PMV. Double infections of PMV with TSWV, PSV with TSWV, and PMV with PSV were detected in 24%, 3%, and 1% of the symptomatic plants. Of 994 apparent asymptomatic plants, 16% were infected with PMV alone or mixed with TSWV, 8% with TSWV alone or mixed with PMV or PSV, and 5% with PSV alone or mixed with TSWV. Double infections of PMV with TSWV and PSV with TSWV were detected in 2% and 1% of the asymptomatic plants. PMV and TSWV were found in at least one field in every county sometime during the two seasons; PSV was found in 13 counties. The most notable difference in virus incidence between the two years was that TSWV was found in 20% of the asymptomatic plants in 1990 as compared to 6% in 1991. PStV was not detected by ELISA in 1990 or 1991, and no reactions suggestive of PStV or any virus other than PMV, PSV, or TSWV were observed on indicator plants used to assay the 1990 collections.