Long-term studies on field-grown soybean during 1997–2007 demonstrated consistently higher root colonization by Fusarium spp. on GR cultivars with glyphosate (Kremerand Means 2009). Soybean roots from plants receiving no or conventional postemergence herbicides exhibited low Fusarium colonization, and nontransgenic (non-GR) cultivars always had the lowest root colonization