Fig. 4. Relationship between average F. graminearum seed infection for field harvested seed from the Uniform Northern (open circles) and Southern (closed circles) Fusarium head blight (FHB) Nurseries in 2001 to (A and B) mean FHB head severity before havest, and (C and D) visual estimates of scabby seeds harvested from the same field. All relationships were nonsignificant (P = 0.05).