Figure 3: Mean colony forming units per gram of dry soil for Fusarium virguliforme isolated from the soil samples collected in 2008 and 2009, (A) from clay pots in the greenhouse and (B) from micro-plots that had a mixture of different crop residues and F. virguliforme CK=coarse-ground corn kernel, CR=corn roots, CS=corn stalk, SK=coarse-ground soybean kernel, SS=soybean stalk, SR=soybean roots, FV=Fusarium virguliforme). Results are an average across 10- and 20-fold dilutions in each year and each dilution with 15 plates. Data was analyzed separately for each year. Means with the same letter are not significantly different (P<0.05).