Fungicides for Turfgrass can be grouped according to their chemical composition into groups called Chemical Families. This is shown in the following Table: Families of Fungicides for Turfgrass.
An important element is the recognition that resistance can develop to fungicides used on turf grass. Hence, FRAC - Fungicide Resistance Action Committee has been established. FRAC is a Specialist Technical Group of CropLife International (Formerly Global Crop Protection Federation, GCPF). The purpose of FRAC is to provide fungicide resistance management guidelines to prolong the effectiveness of “at risk” fungicides and to limit crop losses should resistance occur.
FRAC Code: Numbers and letters are used to distinguish the fungicide groups according to their cross resistance behavior. The numbers were assigned according to the time of product introduction to the market. The letters refer to P = host defense inducers, M = multi-site inhibitors, and U = unknown mode of action and unknown resistance risk.
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