Fusarium Ear Blight

Gibberella avenacea
Fusarium Ear Blight is one of the four main ear diseases to look for. Part of the ear die and turn white or there is a general black discolouration of the ear.
Fusarium

A range of Fusarium species cause head blight in cereals

Look out for:

  • Parts of the ear dying and turning white
  • General discolouration of the ear

Risk Factors:

  • Wet, warm weather
  • Delayed harvest

The main symptoms are the death of part of the ear ranging from a single spikelet to a large part of the ear.

Yield losses can be high, often in the order of 15-40%.

The mechanism whereby fusarium species infect the ear isn’t entirely understood but is likely to be due to the direct transfer of spores from crop debris to the ear through a combination of wind and rain.

The disease is favoured by warm, wet weather, especially heavy storms, during flowering.

Economic losses can be severe through a combination of reduced grain size, poor grain quality