2018 SCN Results Published on November 8, 2019 in Free soil testing for pathogenic nematodes in 2019 & results from 2018 samplesFull resolution (1431 × 588) Next → Image 1. Map of West (white) and Middle (blue) Tennessee showing the distribution of soybean cyst nematode population densities (eggs/100cc soil) across sampled counties in 2018 fields.