Controlling TURFGRASS Diseases By Joseph M. Vargas Jr. T urfgrass diseases are a major concern on golf courses throughout Canada. The fungicides used to control them are the largest part of chemical and fertility budgets. However, managing them is becoming more difficult as turfgrass pathogens are becoming resistant to many traditional fungicides. This article presents the latest information on managing dollar spot, crown-rot anthracnose (CRA), snow mould, and nematodes. Dollar spot Dollar spot, caused by Sclerotinia homoeocarpa (this is technically not the correct fungal name, but hopefully the fungus’ true identity will be known soon), is arguably the most important 18 March 2013 CG_Mar2013.indd 18 2/25/13 11:32:30 AM