Most crops are at or approaching flowering, so now is the time to be thinking about the risk from fusarium ear blight.
Data from CropMonitor are showing that the Microdochium species (M nivale and M majus) are present at the stem base at all five monitoring sites, with levels being higher at the eastern sites. No microdochium species have been isolated from any of the leaf layers at any of the sites, perhaps suggesting that conditions have not yet been correct for perithecial development at the stem base and subsequent spore release.
Fusarium species have also been found at the stem base at all five sites, in contrast to microdochium, both F culmorum and F graminearum have also been isolated from the uppermost leaf layers
These data suggest that inoculum for the development of fusarium ear blight is currently present in crops. Weather during flowering is critical for ear infection and disease development, with warm, wet and humid conditions ideal for both.