C/O: Pyrenophora tritici-repentis

Symptoms:

• Small, oval to diamond-shaped spots.
• These spots will enlarge and turn tan, often with a yellow border, and have a small dark brown spot resembling an “eyespot” near the center.
• Eyespot symptom is best observed when holding the leaf up to the sunlight.
• Infected kernels can develop a reddish discoloration on the seed coat, which commonly is called “red smudge”.

Fig: Tan, necrotic center with yellow halo.   

Fig: Red smudge in wheat