Posterity Fungicide 105 oz. (Agency). Introducing Posterity fungicide, the most active SDHI in the turf market that elevates the control of key diseases including dollar spot, spring dead spot and fairy ring. Posterity delivers power that lasts, holding stronger for up to 28 days of dollar spot control, and setting a new standard for spring dead spot control. Posterity is labeled for all golf course turf and fits in agronomic solutions to protect cool- and warm-season turf. With Posterity, you can manage the toughest and most prevalent diseases with confidence.