Fungicide Table with details of chemistries Published on October 13, 2014 in What the FRAC? – Why FRAC codes matter and understanding fungicide resistanceFull resolution (1177 × 854) ← Previous Next → Table 1 lists some of the most commonly used foliar fungicides available on the market for field crops, by trade name, active ingredient, chemical group name, FRAC code, resistance risk, mode of action, and target site.