Triadimefon is a triazole fungicide used to control powdery mildew, rusts, and other fungal pests on grains, fruit and vegetable crops, turf, shrubs, and trees. Triadimefon inhibits lanosterol 14α-demethylase, interfering with oxidative demethylation reactions in the ergosterol biosynthesis pathway of fungi, and also blocks gibberellin biosynthesis.