Pest Profile

Diplodia stalk rot


Symptoms are similar to Fusarium stalk rot. A distinguishing characteristic are the pepper-speck fruiting structures (pycnidia) that form on the lower stalk and brace roots. The disease is favored by warm, wet weather. The disease is most common when debris from the previous crop remains on the surface. Same as for Fusarium stalk rot.

Taken from Corn Production Handbook, KSU Extension

Pest photo source

Diagnosing Corn Problems in Kansas, KSU Extension