College of Agricultural Sciences

Oregon State University; Dr. Robert Golembiewski, Assistant Professor; Tom Cook, Associate Professor; Brian McDonald, Research Assistant; Final Report; July 31, 2008 (Updated 9/8/10)

Introduction

The purpose of this trial was to evaluate the effectiveness of various fungicides and kelp in controlling anthracnose (Colletotrichum cereale) on annual bluegrass putting greens.

We are looking for a site to do a fairy ring control trial in 2011.  If you are having consistent problems with fairy ring and are willing to allow plots to be set up and different fungicide treatments applied, please call Brian McDonald at 541 231-1149.  The ideal site would be about 2,000 square feet with uniform fairy ring symptoms throughout.  The area could be a golf course fairway, rou

Avoiding Buildup of Resistant Fungi

• Most failures are probably not due to fungal resistance to fungicides.
   
• Fungal resistance is most likely to develop where you over use systemic fungicides and don’t alternate modes of action.
  
  Examples in the PNW on Microdochium Patch: Clearys 3336, Chipco 26GT, and Heritage.
   
• Pathologists have numerous theories on the best strategies for managing fungicides to avoid resistance.

Introduction

The purpose of this trial was to evaluate the effectiveness of various fungicides in controlling Microdochium patch (Microdochium nivale) on an annual bluegrass putting green.

Reports from the 1993 Annual Student Field Day.

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