Researchers have been updating the map of known soybean cyst nematode distribution regularly since 2000, and with each update, the threat spreads. The latest update, spearheaded by Greg Tylka, a nematologist from Iowa State University, reveals 31 counties in ten states reporting SCN for the first time between 2020 and 2023. In Canada, ten rural municipalities in Quebec and three counties across Manitoba and Ontario reported SCN for the first time during that three-year span.
