Penicillium ear rot
Area of impact: Ears
Description: Streaked or bleached kernels with powdery green or blue fungus growing between or on kernels usually at the tip of the ear. Can also infect kernels stored in high-moisture conditions. Discoloration of the embryo will be present.
Pathogen involved: Penicillium oxalicum (a fungus)
Timing/Conditions: Occurs late in the season on mechanically or insect injured ears.
Contributing factors: Can also cause damage in storage grain when kernel moisture reaches 18%.
Management practices: Prevent injury to ears.