Abstract: Beet necrotic yellow vein virus (BNYVV) and Beet soilborne virus (BSBV) are the important soilborne virus diseases in the production areas of sugar beet. A survey was carried out to detect these viruses in soil samples using bait plant test and double antibody sandwich-enzyme-linked immunosorbent assay (DAS-ELISA) and triple antibody sandwich-ELISA (TAS-ELISA) in sugar beet production areas in Tokat, Turkey in 2001. Of the 26 soil samples taken from 8 districts in Tokat province, it was found that 23 samples (85.5%) were infected with BNYVV and 24 samples (92.3%) with BSBV. In 2002, total 49 root samples were tested for the presence of these viruses by ELISA. The incidence of BNYVV (67%) was greater than that of BSBV (8%). Furthermore, in this study it was determined the relationships between physical and chemical properties of soils and the appearance of BNYVV and BSBV. But, it could not determine any connection between infectious potential of viruses and soil properties.