Drechslera strikes poa greens

Why Drechslera? And why now?

The fungus Drechslera poae, also known as leaf spot and melting out, is one we don't see very often. Causing symptoms similar to those caused by anthracnose, the disease recently caused significant damage to poa greens at a Northern California golf course.

We were initially puzzled as to why the disease chose this time to strike, especially since the greens had recently been treated with Heritage (azoxystrobin), a fungicide that is labeled and is effective…