How to Manage Pests
UC Pest Management Guidelines
General Properties And Use Of Fungicides
(Reviewed 9/09, updated 9/09)
In this Guideline:
The fungicide products mentioned in this section are registered for use on turfgrass in California, but many have not been evaluated by the University of California for their effectiveness in controlling turfgrass diseases. The fungicides are listed alphabetically in the treatment tables and not necessarily in the order of effectiveness. In general, use fungicides only on golf and bowling greens and other high maintenance turfgrasses. For best results, use fungicides preventively based on history of previous diseases and when conditions are conducive to disease development or when the disease is first visible. Accurate identification of a disease is critical to choosing the best fungicide. Read and follow fungicide label recommendations carefully for rate recommendations, which usually vary based on the severity of the disease and whether the treatment is preventive or curative.
Turfgrass areas such as landscape areas and parks only rarely require fungicide applications. Good cultural practices including proper turf species selection, appropriate use of fertilizer and irrigation will prevent serious damage in most turfgrass areas.
To help prevent the development of resistance to a pesticide, rotate pesticides with different mode-of-action Group numbers. These numbers are listed with each pesticide in the treatment tables throughout this guideline.
UC IPM Pest Management Guidelines:
A. M. Sutherland, UC Statewide IPM Program, Alameda County