Diplodia Ear Rot
- Diplodia Ear Rot is a fungal infection of corn.
- Signs and symptoms
- Dense, white mold
- Starts from the base of the ear. Becomes grayish-brown and spreads over the husks and kernels
- Raised black fruiting bodies of the fungus can be seen late in the season
- Disease Cycle
- Favored by wet weather just after silking. More severe when corn is planted after corn.
- Does not produce toxins.
- If your corn crop has ear rot problems this season, there are some management options you can consider to reduce the incidence of these diseases next season. Plant a hybrid with ear rot resistance; avoid planting corn on corn, especially under conservation tillage, and reduce stress on the plants with adequate fertilization and good insect pest management.