GIBBERELLA EAR ROT (GER)
- Caused by Fusarium graminearum
- Infection occurs during silking and symptoms include a red or pink mould beginning at ear tip.
- Cool, wet weather during silking increases risk of infection.
- GER leads to increased vomitoxin (DON) levels, which, when high enough, make the corn unsafe as livestock feed.
- If fungicide is needed, aim to apply when there is plentiful, wet silks on the main ear.
- Reduce F. graminearum inoculum through residue management and rotations: do not follow corn with wheat and vice versa.